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Bridge Statistics for Rockwood, Michigan (MI)
Condition, Traffic, Stress, Structural Evaluation, Project Costs


  • National Bridge Inventory (NBI) Statistics
  • 22Number of bridges
  • 171ft / 52.0mTotal length
  • 272,498Total average daily traffic
  • 44,696Total average daily truck traffic
  • National Bridge Inventory (NBI) Registered Bridges for Rockwood
  • No street view available for this location

New bridges in Rockwood, MI - historical statistics
  • New bridges - historical statistics
  • 11920-1929
  • 51930-1939
  • 11960-1969
  • 51980-1989
  • 102000-2009
Average Bridge Daily Traffic in Rockwood, MI
Average Bridge Truck Traffic in Rockwood, MI
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 47.1%Good
  • 35.3%Satisfactory
  • 5.9%Poor
  • 11.8%Serious
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 17.6%Very good
  • 41.2%Good
  • 17.6%Satisfactory
  • 5.9%Fair
  • 11.8%Poor
  • 5.9%Serious
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 23.5%Very good
  • 11.8%Good
  • 29.4%Satisfactory
  • 23.5%Fair
  • 11.8%Poor
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 12.5%Very good
  • 25.0%Good
  • 43.8%Satisfactory
  • 18.8%Fair
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 50.0%Very good
  • 50.0%Good
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Structure Number: 1199,  Location: 3.5 MI N OF I-94 (Lat: 42.318783,  Lng: -85.178675),  Route carried "on" structure: State highway 66,  Year Built: 1966,  Status: Open,  Structure Length: 2.62m (8.60ft),  Average Daily Traffic: 15,300 (year 2013),  Truck Traffic: 2%,  Average Future Daily Traffic: 26,074 (year 2018),  Design Load: HS 20,  Features Intersected: BATTLE CREEK RIVER
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.348,  Lanes on structure: 5,  Base Highway Network: Yes (Inventory Route: 186,  Subroute: 3),  Owner: State Highway Agency,  Approaching Roadway Width: 17.4m (57.1ft),  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 13.1m (43.0ft),  Curb or Sidewalk Widths: Left: 2.4m (7.9ft),  Right: 2.4m (7.9ft),  Curb-To-Curb Width: 17.4m (57.1ft),  Out-to-Out Width: 22.9m (75.1ft)

Condition: Deck: Satisfactory,  Superstructure: Good,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 70.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 29.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 60 months,  Inspection Date: July 2021,  Underwater Inspection Date: June 2017,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 7193,  Location: IN ROCKWOOD (Lat: 42.067928,  Lng: -83.254133),  Route carried "on" structure: Interstate 75,  Year Built: 2009,  Status: Open,  Structure Length: 6.10m (20.01ft),  Average Daily Traffic: 26,929 (year 2007),  Truck Traffic: 21%,  Average Future Daily Traffic: 40,250 (year 2028),  Design Load: Greater than HL93,  Features Intersected: HURON RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 43.064,  Lanes on structure: 3,  Base Highway Network: Yes (Inventory Route: 122,  Subroute: 10),  Owner: State Highway Agency,  Approaching Roadway Width: 17.8m (58.4ft),  Skew: 31 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 27.4m (89.9ft),  Curb-To-Curb Width: 17.7m (58.1ft),  Out-to-Out Width: 18.7m (61.4ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Very good,  Operating Rating: 72.6 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 56.1 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 7279,  Location: 1.25 MI SW OF COUNTY LINE (Lat: 42.026894,  Lng: -83.225064),  Route carried "on" structure: County highway 5885,  Year Built: 2006,  Status: Open,  Structure Length: 1.89m (6.20ft),  Average Daily Traffic: 1,768 (year 2017),  Truck Traffic: 20%,  Average Future Daily Traffic: 2,033 (year 2037),  Design Load: HS 20+Mod,  Features Intersected: MOUILLEE CREEK,  Facility Carried by Structure: US TURNPIKE
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 20.034,  Lanes on structure: 2,  Base Highway Network: Yes (Inventory Route: 430,  Subroute: 55),  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 18.0m (59.1ft),  Curb-To-Curb Width: 12.8m (42.0ft),  Out-to-Out Width: 13.5m (44.3ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Very good,  Channel: Very good,  Operating Rating: 97.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 64.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 11631,  Location: 0.3 MI N OF N HURON RI DR (Lat: 42.076583,  Lng: -83.247106),  Route carried "on" structure: Interstate 75,  Year Built: 2008,  Status: Open,  Structure Length: 1.37m (4.49ft),  Average Daily Traffic: 31,294 (year 2007),  Truck Traffic: 19%,  Average Future Daily Traffic: 91,000 (year 2028),  Design Load: Greater than HL93,  Features Intersected: SILVER CREEK
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 1.114,  Lanes on structure: 8,  Base Highway Network: Yes (Inventory Route: 159,  Subroute: 10),  Owner: State Highway Agency,  Approaching Roadway Width: 44.1m (144.7ft),  Skew: 3 degrees,  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 12.2m (40.0ft),  Curb-To-Curb Width: 44.1m (144.7ft),  Out-to-Out Width: 77.4m (253.9ft)

Condition: Channel: Good,  Culverts: Very good,  Operating Rating: 93.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 56.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Superior to present desirable criteria,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2020,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 11642,  Location: IN ROCKWOOD (Lat: 42.070194,  Lng: -83.252286),  Route carried "on" structure: Interstate 75,  Year Built: 2008,  Status: Open,  Structure Length: 4.70m (15.42ft),  Average Daily Traffic: 62,588 (year 2007),  Truck Traffic: 21%,  Average Future Daily Traffic: 40,250 (year 2028),  Design Load: Greater than HL93,  Features Intersected: NORTH HURON RIVER DRIVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.285,  Lanes on structure: 4,  Lanes under structure: 4,  Base Highway Network: Yes (Inventory Route: 159,  Subroute: 10),  Owner: State Highway Agency,  Approaching Roadway Width: 21.3m (69.9ft),  Skew: 31 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 22.5m (73.8ft),  Curb-To-Curb Width: 21.3m (69.9ft),  Out-to-Out Width: 22.4m (73.5ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Very good,  Operating Rating: 69.7 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 53.8 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Better than present minimum criteria,  Underclear: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 11643,  Location: 0.8 MI N OF MONROE COL (Lat: 42.081078,  Lng: -83.243253),  Route carried "on" structure: County highway ,  Year Built: 2008,  Status: Open,  Structure Length: 10.51m (34.48ft),  Average Daily Traffic: 5,328 (year 2007),  Average Future Daily Traffic: 1,250 (year 2028),  Design Load: HL 93,  Features Intersected: I-75 & M-85,  Facility Carried by Structure: WOODRUFF RD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 2.955,  Lanes on structure: 2,  Lanes under structure: 8,  Owner: State Highway Agency,  Approaching Roadway Width: 14.0m (45.9ft),  Skew: 3 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 25.5m (83.7ft),  Curb or Sidewalk Widths: Left: 0.0m,  Right: 1.6m (5.2ft),  Curb-To-Curb Width: 14.0m (45.9ft),  Out-to-Out Width: 16.3m (53.5ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Very good,  Operating Rating: 86.5 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 66.7 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Superior to present desirable criteria,  Underclear: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 11989,  Location: ROCKWOOD E/STREICHER (Lat: 42.066897,  Lng: -83.234067),  Route carried "on" structure: County highway 2057,  Year Built: 1981,  Status: Open,  Structure Length: 0.79m (2.59ft),  Average Daily Traffic: 6,080 (year 1996),  Truck Traffic: 5%,  Average Future Daily Traffic: 5,213 (year 2015),  Design Load: HS 25 or greater,  Features Intersected: SILVER CREEK,  Facility Carried by Structure: HURON RIVER DRIVE
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 6.373,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 11.6m (38.1ft),  Skew: 1 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.7m (22.0ft),  Curb-To-Curb Width: 14.0m (45.9ft),  Out-to-Out Width: 15.2m (49.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Good,  Operating Rating: 42.1 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 32.7 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Superior to present desirable criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 1199,  Location: ROCKWOOD W/JEFFERSON (Lat: 42.067119,  Lng: -83.228792),  Route carried "on" structure: County highway 2057,  Year Built: 1989,  Status: Open,  Structure Length: 0.73m (2.40ft),  Average Daily Traffic: 6,080 (year 1996),  Truck Traffic: 10%,  Average Future Daily Traffic: 5,213 (year 2015),  Design Load: HS 25 or greater,  Features Intersected: SMITH CREEK,  Facility Carried by Structure: HURON RIVER DRIVE
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 6.811,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.1m (20.0ft),  Curb-To-Curb Width: 13.1m (43.0ft),  Out-to-Out Width: 14.2m (46.6ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 42.8 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 33.0 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 12183,  Location: ROCKWOOD S/HURON RIVER DR (Lat: 42.064272,  Lng: -83.253725),  Route carried "on" structure: County highway 2057,  Year Built: 1981,  Status: Open,  Structure Length: 5.51m (18.08ft),  Average Daily Traffic: 5,161 (year 1996),  Truck Traffic: 5%,  Average Future Daily Traffic: 4,934 (year 2015),  Features Intersected: HURON RIVER,  Facility Carried by Structure: FORT STREET
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.220,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 15.8m (51.8ft),  Skew: 3 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 23.1m (75.8ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 15.4m (50.5ft),  Out-to-Out Width: 16.6m (54.5ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 97.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 75.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Superior to present desirable criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 12196,  Location: BROWNSTOWN COUNTY LINE (Lat: 42.042778,  Lng: -83.214042),  Route carried "on" structure: County highway 2057,  Year Built: 1930,  Status: Posted for load,  Structure Length: 5.03m (16.50ft),  Average Daily Traffic: 4,529 (year 1996),  Truck Traffic: 7%,  Average Future Daily Traffic: 4,482 (year 2015),  Design Load: HS 20+Mod,  Features Intersected: HURON RIVER,  Facility Carried by Structure: JEFFERSON AVENUE
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.100,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 16.7m (54.8ft),  Curb or Sidewalk Widths: Left: 1.0m (3.3ft),  Right: 1.0m (3.3ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 14.0m (45.9ft)

Condition: Deck: Serious,  Superstructure: Poor,  Substructure: Poor,  Channel: Satisfactory,  Operating Rating: 27.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 16.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Meets minimum limits,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Designated Inspection Frequency: Every 12 months,  Underwater Inspection Frequency: Every 60 months,  Inspection Date: April 2021,  Underwater Inspection Date: November 2018,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete
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Structure Number: 12197,  Location: BROWNSTOWN S/CAMPAU (Lat: 42.047842,  Lng: -83.211372),  Route carried "on" structure: County highway 2057,  Year Built: 1927,  Status: Open,  Structure Length: 2.19m (7.19ft),  Average Daily Traffic: 4,529 (year 1996),  Truck Traffic: 7%,  Average Future Daily Traffic: 4,482 (year 2015),  Design Load: HS 20+Mod,  Features Intersected: SILVER CREEK,  Facility Carried by Structure: JEFFERSON AVENUE
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.758,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Skew: 3 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 10.0m (32.8ft),  Curb or Sidewalk Widths: Left: 0.5m (1.6ft),  Right: 0.5m (1.6ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 13.9m (45.6ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 65.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 39.2 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Underwater Inspection Date: November 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete
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Structure Number: 12248,  Location: BRNTWN/RKWDE/FORT (Lat: 42.081183,  Lng: -83.236872),  Route carried "on" structure: County highway ,  Year Built: 1981,  Status: Open,  Structure Length: 0.76m (2.49ft),  Average Daily Traffic: 583 (year 1996),  Truck Traffic: 1%,  Average Future Daily Traffic: 787 (year 2015),  Design Load: H 20,  Features Intersected: SMITH CREEK,  Facility Carried by Structure: WOODRUFF ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 3.505,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.4m (21.0ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 13.1m (43.0ft),  Out-to-Out Width: 14.5m (47.6ft)

Condition: Deck: Satisfactory,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Good,  Operating Rating: 84.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 50.9 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Superior to present desirable criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 1225,  Location: BRNTWNW/JEFFERSON (Lat: 42.060803,  Lng: -83.224458),  Route carried "on" structure: County highway ,  Year Built: 1937,  Year Reconstructed: 1975,  Status: Open,  Structure Length: 0.82m (2.69ft),  Average Daily Traffic: 253 (year 1996),  Truck Traffic: 2%,  Average Future Daily Traffic: 359 (year 2015),  Design Load: HS 20,  Features Intersected: SMITH CREEK,  Facility Carried by Structure: STREICHER ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 1.176,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Material/Design: Prestressed concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.3m (24.0ft),  Curb or Sidewalk Widths: Left: 0.5m (1.6ft),  Right: 0.5m (1.6ft),  Curb-To-Curb Width: 7.2m (23.6ft),  Out-to-Out Width: 8.2m (26.9ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Poor,  Channel: Fair,  Operating Rating: 62.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 37.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Meets minimum limits,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 12 months,  Inspection Date: September 2021,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete
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Structure Number: 12251,  Location: BRNTWNW/JEFFERSON (Lat: 42.042931,  Lng: -83.214161),  Route carried "on" structure: County highway ,  Year Built: 1930,  Status: Open,  Structure Length: 1.37m (4.49ft),  Average Daily Traffic: 250 (year 1987),  Truck Traffic: 1%,  Average Future Daily Traffic: 288 (year 2015),  Design Load: H 20,  Features Intersected: SILVER CREEK,  Facility Carried by Structure: HARBIN DRIVE
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.027,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.6m (24.9ft),  Material/Design: Concrete,  Design/Construction: Arch - Deck,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 12.2m (40.0ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 8.2m (26.9ft),  Out-to-Out Width: 8.2m (26.9ft)

Condition: Deck: Satisfactory,  Superstructure: Fair,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 32.7 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 19.6 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 60 months,  Inspection Date: September 2020,  Underwater Inspection Date: November 2018,  Wearing Surface/Protective System: Wearing Surface: Gravel
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Structure Number: 12252,  Location: BRNTWNW/JEFFERSON (Lat: 42.047303,  Lng: -83.211703),  Route carried "on" structure: County highway ,  Year Built: 1930,  Status: Posted for load,  Structure Length: 0.73m (2.40ft),  Average Daily Traffic: 100 (year 1987),  Average Future Daily Traffic: 115 (year 2015),  Design Load: H 15,  Features Intersected: SILVER CREEK,  Facility Carried by Structure: LELAND DRIVE
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.148,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.4m (21.0ft),  Curb-To-Curb Width: 6.4m (21.0ft),  Out-to-Out Width: 7.0m (23.0ft)

Condition: Deck: Serious,  Superstructure: Serious,  Substructure: Fair,  Channel: Fair,  Operating Rating: 40.7 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 24.4 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: High priority of corrective action,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 0.1 - 9.9% below),  Designated Inspection Frequency: Every 12 months,  Inspection Date: May 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Gravel
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Structure Number: 12302,  Location: BROWNSTOWN S/HURON RIV DR (Lat: 42.064972,  Lng: -83.230497),  Route carried "on" structure: County highway ,  Year Built: 1936,  Status: Closed,  Structure Length: 0.70m (2.30ft),  Average Daily Traffic: 253 (year 1996),  Truck Traffic: 2%,  Average Future Daily Traffic: 359 (year 2015),  Design Load: H 15,  Features Intersected: SILVER CREEK,  Facility Carried by Structure: STREICHER ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.428,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Skew: 3 degrees,  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.3m (20.7ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 9.6m (31.5ft)

Condition: Deck: Poor,  Superstructure: Poor,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 13.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 7.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Designated Inspection Frequency: Every 12 months,  Inspection Date: September 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 13431,  Location: 0.1 MI N OF SIGLER RD (Lat: 42.040014,  Lng: -83.225289),  Route carried "on" structure: County highway ,  Year Built: 1981,  Status: Open,  Structure Length: 0.78m (2.56ft),  Average Daily Traffic: 170 (year 2011),  Truck Traffic: 8%,  Average Future Daily Traffic: 195 (year 2031),  Design Load: HS 20,  Features Intersected: LAUDENSCHLAGER DRAIN,  Facility Carried by Structure: WASSANOVA RD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.164,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.4m (21.0ft),  Skew: 4 degrees,  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.1m (10.2ft),  Curb-To-Curb Width: 6.4m (21.0ft),  Out-to-Out Width: 21.9m (71.9ft)

Condition: Channel: Fair,  Culverts: Good,  Operating Rating: 54.5 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 32.7 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Meets minimum limits,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: November 2020
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Structure Number: 13443,  Location: IN ROCKWOOD (Lat: 42.062756,  Lng: -83.258547),  Route carried "on" structure: Interstate 75,  Year Built: 2008,  Status: Open,  Structure Length: 4.71m (15.45ft),  Average Daily Traffic: 31,313 (year 2003),  Truck Traffic: 21%,  Average Future Daily Traffic: 40,250 (year 2028),  Design Load: Greater than HL93,  Features Intersected: N HURON RIVER DRIVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.296,  Lanes on structure: 4,  Lanes under structure: 4,  Base Highway Network: Yes (Inventory Route: 159,  Subroute: 6),  Owner: State Highway Agency,  Approaching Roadway Width: 23.2m (76.1ft),  Skew: 1 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 22.5m (73.8ft),  Curb-To-Curb Width: 23.2m (76.1ft),  Out-to-Out Width: 24.2m (79.4ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Very good,  Operating Rating: 70.0 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 54.1 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Superior to present desirable criteria,  Underclear: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 31521-01655,  Location: 0.25 MI N OF LEBO ROAD (Lat: 42.027167,  Lng: -83.234333),  Route carried "on" structure: Federal lands road ,  Year Built: 2005,  Status: Open,  Structure Length: 0.73m (2.40ft),  Average Future Daily Traffic: 1 (year 2041),  Features Intersected: S BRANCH MOUILLE CREEK,  Facility Carried by Structure: TAYLOR UNIT N FIEL
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.000,  Lanes on structure: 1,  Owner: Bureau of Fish and Wildlife,  Approaching Roadway Width: 3.0m (9.8ft),  Material/Design: Steel,  Design/Construction: Box Beam or Girders - Single/Spread,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.7m (22.0ft),  Curb-To-Curb Width: 3.0m (9.8ft),  Out-to-Out Width: 3.0m (9.8ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Channel: Good,  Operating Rating: 8.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 4.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: High priority of corrective action,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2021,  Deck Structure Type: Steel plate
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Structure Number: 11642,  Location: IN ROCKWOOD (Lat: 42.070194,  Lng: -83.252286),  Route carried "under" structure: County highway 2057,  Year Built: 2008,  Structure Length: 0. m,  Average Daily Traffic: 6,350 (year 2008),  Features Intersected: NORTH HURON RIVER DRIVE,  Facility Carried by Structure: I-75 NB
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 4.727,  Lanes on structure: 4,  Lanes under structure: 4,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 22.5m (73.8ft)

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Structure Number: 11643,  Location: 0.8 MI N OF MONROE COL (Lat: 42.081078,  Lng: -83.243253),  Route carried "under" structure: Interstate 75,  Year Built: 2008,  Structure Length: 0. m,  Average Daily Traffic: 57,290 (year 2007),  Truck Traffic: 19%,  Features Intersected: I-75 & M-85,  Facility Carried by Structure: WOODRUFF RD
Minimum Vertical Clearance: 5.51m (18.08ft),  Kilometerpoint: 1.693,  Lanes on structure: 2,  Lanes under structure: 8,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 25.5m (83.7ft)

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Structure Number: 13443,  Location: IN ROCKWOOD (Lat: 42.062756,  Lng: -83.258547),  Route carried "under" structure: County highway 2057,  Year Built: 2008,  Structure Length: 0. m,  Average Daily Traffic: 6,350 (year 2003),  Features Intersected: N HURON RIVER DRIVE,  Facility Carried by Structure: I-75 SB
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 4.709,  Lanes on structure: 4,  Lanes under structure: 4,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 22.5m (73.8ft)

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