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

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Structure Number: 577,  Location: 3.4 MI E OF US-23 (Lat: 42.521481,  Lng: -83.689097),  Route carried "on" structure: County highway 4793,  Year Built: 2008,  Status: Open,  Structure Length: 7.92m (25.98ft),  Average Daily Traffic: 2,500 (year 1988),  Truck Traffic: 15%,  Average Future Daily Traffic: 25,300 (year 2028),  Design Load: Greater than HL93,  Features Intersected: I-96,  Facility Carried by Structure: KENSINGTON RD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 2.816,  Lanes on structure: 4,  Lanes under structure: 8,  Owner: State Highway Agency,  Approaching Roadway Width: 18.9m (62.0ft),  Skew: 2 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 39.1m (128.3ft),  Curb-To-Curb Width: 20.7m (67.9ft),  Out-to-Out Width: 26.2m (86.0ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Operating Rating: 75.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 45.0 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Superior to present desirable criteria,  Underclear: High priority of corrective action,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 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: 5809,  Location: SEC 26 GREEN OAK TWP (Lat: 42.452942,  Lng: -83.696022),  Route carried "on" structure: County highway 4793,  Year Built: 1995,  Status: Open,  Structure Length: 1.82m (5.97ft),  Average Daily Traffic: 6,178 (year 2020),  Average Future Daily Traffic: 7,414 (year 2040),  Design Load: HS 20,  Features Intersected: WALKER DRAIN,  Facility Carried by Structure: RUSHTON ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 2.536,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 17.0m (55.8ft),  Curb-To-Curb Width: 12.5m (41.0ft),  Out-to-Out Width: 13.3m (43.6ft)

Condition: Deck: Very good,  Superstructure: Good,  Substructure: Very good,  Channel: Good,  Operating Rating: 86.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 51.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 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: 5844,  Location: SEC 14 GREEN OAK TWP (Lat: 42.481961,  Lng: -83.697769),  Route carried "on" structure: County highway 4793,  Year Built: 1958,  Status: Open,  Structure Length: 0.91m (2.99ft),  Average Daily Traffic: 3,900 (year 2019),  Average Future Daily Traffic: 4,680 (year 2039),  Design Load: HS 20+Mod,  Features Intersected: DAVIS CREEK,  Facility Carried by Structure: RUSHTON ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 5.794,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 3 degrees,  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 8.8m (28.9ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 10.7m (35.1ft)

Condition: Deck: Very good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 42.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 25.6 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: Meets minimum limits,  Waterway Adequacy: Equal to present desirable 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

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Structure Number: 5845,  Location: SEC 1-2 GREEN OAK TWP (Lat: 42.513700,  Lng: -83.689750),  Route carried "on" structure: County highway 4793,  Year Built: 1978,  Status: Open,  Structure Length: 0.91m (2.99ft),  Average Daily Traffic: 13,390 (year 2019),  Average Future Daily Traffic: 16,068 (year 2039),  Design Load: HS 20+Mod,  Features Intersected: ISLAND PARK SERVICE DR,  Facility Carried by Structure: KENSINGTON ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 1.476,  Lanes on structure: 2,  Lanes under structure: 1,  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: 1,  Length of Maximum Span: 8.5m (27.9ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 15.4m (50.5ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 91.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 54.4 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Meets minimum limits,  Underclear: High priority of corrective action,  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: Bituminous

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Structure Number: 5865,  Location: SEC 13 GREEN OAK TWP (Lat: 42.488508,  Lng: -83.668572),  Route carried "on" structure: County highway ,  Year Built: 1979,  Status: Open,  Structure Length: 0.76m (2.49ft),  Average Daily Traffic: 470 (year 2012),  Average Future Daily Traffic: 1,100 (year 2042),  Design Load: H 20,  Features Intersected: DAVIS CREEK,  Facility Carried by Structure: DIXBORO ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 1.497,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.3m (10.8ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Channel: Poor,  Culverts: 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: 59.0 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: Equal to 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: October 2021

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Structure Number: 8171,  Location: BET DIXBORO AND KENT LK R (Lat: 42.516350,  Lng: -83.661464),  Route carried "on" structure: County highway 6318,  Year Built: 2009,  Status: Open,  Structure Length: 4.01m (13.16ft),  Average Daily Traffic: 4,517 (year 2007),  Truck Traffic: 5%,  Average Future Daily Traffic: 6,700 (year 2027),  Design Load: HS 20+Mod,  Features Intersected: KENT LAKE,  Facility Carried by Structure: GRAND RIVER AVE
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 2.327,  Lanes on structure: 2,  Base Highway Network: Yes (Inventory Route: 410,  Subroute: 42),  Owner: County Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Skew: 2 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Single/Spread,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 22.4m (73.5ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 13.2m (43.3ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Good,  Channel: Good,  Operating Rating: 59.0 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor (LRFR),  Inventory Rating: 43.0 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor (LRFR),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 60 months,  Inspection Date: June 2020,  Underwater Inspection Date: April 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: 82,  Location: EAST OF MARTINDALE (Lat: 42.486719,  Lng: -83.631975),  Route carried "on" structure: County highway ,  Year Built: 1961,  Status: Posted for load,  Structure Length: 0.76m (2.49ft),  Average Daily Traffic: 300 (year 2015),  Truck Traffic: 5%,  Average Future Daily Traffic: 550 (year 2025),  Design Load: HS 20+Mod,  Features Intersected: NOVI-LYON DRAIN,  Facility Carried by Structure: TWELVE MILE
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.510,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 5.4m (17.7ft),  Skew: 2 degrees,  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.3m (10.8ft),  Out-to-Out Width: 12.2m (40.0ft)

Condition: Channel: Fair,  Culverts: Serious,  Operating Rating: 17.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 10.7 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: High priority of corrective action,  Waterway Adequacy: Somewhat better than minimum adequacy,  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,  Inspection Date: June 2021

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Structure Number: 8201,  Location: SOUTH OF TRAVIS (Lat: 42.495133,  Lng: -83.638775),  Route carried "on" structure: County highway ,  Year Built: 1970,  Status: Posted for load,  Structure Length: 0.88m (2.89ft),  Average Daily Traffic: 1,080 (year 2016),  Average Future Daily Traffic: 1,460 (year 2036),  Design Load: HS 20+Mod,  Features Intersected: NOVI-LYON DRAIN,  Facility Carried by Structure: MARTINDALE
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 3.772,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.6m (11.8ft),  Out-to-Out Width: 13.7m (44.9ft)

Condition: Channel: Poor,  Culverts: Critical,  Operating Rating: 8.7 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 5.2 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: High priority of replacement,  Waterway Adequacy: Somewhat better than minimum adequacy,  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 6 months,  Inspection Date: December 2021

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Structure Number: 13496,  Location: GREEN OAK TWP SEC 1 (Lat: 42.513625,  Lng: -83.689858),  Route carried "on" structure: County highway ,  Year Built: 1957,  Status: Open,  Structure Length: 1.49m (4.89ft),  Average Daily Traffic: 9,370 (year 2006),  Average Future Daily Traffic: 10,776 (year 2026),  Design Load: H 20,  Features Intersected: HURON RIVER,  Facility Carried by Structure: KENSINGTON RD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 1.975,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  Skew: 2 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 13.8m (45.3ft),  Curb or Sidewalk Widths: Left: 0.5m (1.6ft),  Right: 0.5m (1.6ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 10.8m (35.4ft)

Condition: Deck: Fair,  Superstructure: Good,  Substructure: Good,  Channel: Good,  Operating Rating: 55.7 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 33.4 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Superior to present desirable 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: Bituminous

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Structure Number: 13648,  Location: LYON TWP SEC 15/22 (Lat: 42.476806,  Lng: -83.606917),  Route carried "on" structure: County highway ,  Year Built: 1972,  Status: Posted for load,  Structure Length: 0.76m (2.49ft),  Average Daily Traffic: 380 (year 2018),  Average Future Daily Traffic: 700 (year 2038),  Design Load: HS 20,  Features Intersected: NOVI-LYON DRAIN,  Facility Carried by Structure: 11 MILE ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 5.042,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.0m (9.8ft),  Curb-To-Curb Width: 9.3m (30.5ft),  Out-to-Out Width: 9.3m (30.5ft)

Condition: Channel: Fair,  Culverts: Critical,  Operating Rating: 12.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 7.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: High priority of replacement,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Better than present minimum 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 6 months,  Inspection Date: December 2021,  Wearing Surface/Protective System: Wearing Surface: Gravel

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Structure Number: 577,  Location: 3.4 MI E OF US-23 (Lat: 42.521481,  Lng: -83.689097),  Route carried "under" structure: Interstate 96,  Year Built: 2008,  Structure Length: 0. m,  Average Daily Traffic: 98,900 (year 2007),  Truck Traffic: 8%,  Features Intersected: I-96,  Facility Carried by Structure: KENSINGTON RD
Minimum Vertical Clearance: 5.08m (16.67ft),  Kilometerpoint: 42.620,  Lanes on structure: 4,  Lanes under structure: 8,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 39.1m (128.3ft)

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Structure Number: 5845,  Location: SEC 1-2 GREEN OAK TWP (Lat: 42.513700,  Lng: -83.689750),  Route carried "under" structure: ServiceOther road ,  Year Built: 1978,  Structure Length: 0. m,  Average Daily Traffic: 20 (year 1994),  Features Intersected: ISLAND PARK SERVICE DR,  Facility Carried by Structure: KENSINGTON ROAD
Minimum Vertical Clearance: 4.42m (14.50ft),  Kilometerpoint: 0.452,  Lanes on structure: 2,  Lanes under structure: 1,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 8.5m (27.9ft)

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Structure Number: 7796,  Location: 0.7 MI E OF LIVINGSTON CO (Lat: 42.516967,  Lng: -83.654189),  Route carried "under" structure: County highway ,  Year Built: 1948,  Structure Length: 0. m,  Average Daily Traffic: 2,010 (year 0000),  Features Intersected: KENT LAKE RD,  Facility Carried by Structure: I-96
Minimum Vertical Clearance: 4.75m (15.58ft),  Kilometerpoint: 1.593,  Lanes on structure: 7,  Lanes under structure: 4,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 15.1m (49.5ft)

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Structure Number: 7797,  Location: 1.9 MI E OF LIVINGSTON CO (Lat: 42.518794,  Lng: -83.616147),  Route carried "under" structure: County highway 6311,  Year Built: 1957,  Structure Length: 0. m,  Average Daily Traffic: 3,320 (year 1976),  Features Intersected: MILFORD RD,  Facility Carried by Structure: I-96EB
Minimum Vertical Clearance: 4.52m (14.83ft),  Kilometerpoint: 6.346,  Lanes on structure: 4,  Lanes under structure: 4,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 20.2m (66.3ft)

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Structure Number: 7798,  Location: 1.9 MI E OF LIVINGSTON CO (Lat: 42.519003,  Lng: -83.616128),  Route carried "under" structure: County highway 6311,  Year Built: 1957,  Structure Length: 0. m,  Average Daily Traffic: 3,320 (year 1976),  Features Intersected: MILFORD RD,  Facility Carried by Structure: I-96WB
Minimum Vertical Clearance: 4.82m (15.81ft),  Kilometerpoint: 6.370,  Lanes on structure: 4,  Lanes under structure: 4,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 20.2m (66.3ft)