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


  • National Bridge Inventory (NBI) Statistics
  • 12Number of bridges
  • 66ft / 19.8mTotal length
  • $1,237,000Total costs
  • 19,961Total average daily traffic
  • 1,060Total average daily truck traffic
  • 29,107Total future (year 2006) average daily traffic
  • National Bridge Inventory (NBI) Registered Bridges for Ironwood
  • No street view available for this location

New bridges in Ironwood, MI - historical statistics
  • New bridges - historical statistics
  • 11930-1939
  • 61960-1969
  • 11970-1979
  • 11990-1999
  • 22000-2009
  • 12010-2019
Reconstructed bridges in Ironwood, MI - Historical Statistics
  • Reconstructed bridges - Historical Statistics
  • 21980-1989
  • 01990-1999
  • 12000-2009
Average Bridge Daily Traffic in Ironwood, MI
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 50.0%Good
  • 25.0%Satisfactory
  • 25.0%Fair
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 37.5%Good
  • 62.5%Satisfactory
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 25.0%Very good
  • 37.5%Good
  • 25.0%Satisfactory
  • 12.5%Fair
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 8.3%Very good
  • 33.3%Good
  • 50.0%Satisfactory
  • 8.3%Fair
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 25.0%Good
  • 25.0%Fair
  • 50.0%Poor
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Structure Number: 295,  Location: SALEM TWP SEC 34 (Lat: 42.688456,  Lng: -85.822331),  Route carried "on" structure: County highway ,  Year Built: 1979,  Status: Open,  Structure Length: 0.67m (2.20ft),  Average Daily Traffic: 185 (year 2002),  Truck Traffic: 7%,  Average Future Daily Traffic: 370 (year 2022),  Design Load: H 20,  Features Intersected: PIGEON CREEK,  Facility Carried by Structure: 137TH AVENUE
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 1.423,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  Skew: 3 degrees,  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 2.7m (8.9ft)

Condition: Channel: Satisfactory,  Culverts: 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: 86.5 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,  Waterway Adequacy: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2021
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Structure Number: 2943,  Location: IN IRONWOOD (Lat: 46.449947,  Lng: -90.178467),  Route carried "on" structure: Business US 2,  Year Built: 1964,  Year Reconstructed: 2006,  Status: Open,  Structure Length: 1.58m (5.18ft),  Average Daily Traffic: 7,161 (year 2007),  Truck Traffic: 7%,  Average Future Daily Traffic: 7,510 (year 2018),  Design Load: HS 20,  Features Intersected: MONTREAL RIVER
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.011,  Lanes on structure: 2,  Base Highway Network: Yes (Inventory Route: 148,  Subroute: 10),  Owner: State Highway Agency,  Approaching Roadway Width: 14.6m (47.9ft),  Skew: 3 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 14.9m (48.9ft),  Curb or Sidewalk Widths: Left: 2.4m (7.9ft),  Right: 3.0m (9.8ft),  Curb-To-Curb Width: 14.6m (47.9ft),  Out-to-Out Width: 20.8m (68.2ft)

Condition: Deck: Satisfactory,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 77.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 46.3 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: Superior to present desirable criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Latex Concrete
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Structure Number: 2944,  Location: IN IRONWOOD (Lat: 46.465578,  Lng: -90.192200),  Route carried "on" structure: US 2,  Year Built: 1961,  Year Reconstructed: 1986,  Status: Open,  Structure Length: 3.84m (12.60ft),  Average Daily Traffic: 2,738 (year 2007),  Truck Traffic: 11%,  Average Future Daily Traffic: 6,700 (year 2018),  Design Load: HS 20,  Features Intersected: MONTREAL RIVER
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.016,  Lanes on structure: 2,  Base Highway Network: Yes (Inventory Route: 327,  Subroute: 65),  Owner: State Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Skew: 3 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 15.2m (49.9ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 13.1m (43.0ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 59.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 30.8 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: Better than present minimum criteria,  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: 295,  Location: IN IRONWOOD (Lat: 46.465364,  Lng: -90.192264),  Route carried "on" structure: US 2,  Year Built: 1961,  Year Reconstructed: 1986,  Status: Open,  Structure Length: 3.84m (12.60ft),  Average Daily Traffic: 2,738 (year 2007),  Truck Traffic: 9%,  Average Future Daily Traffic: 6,700 (year 2026),  Design Load: HS 20,  Features Intersected: MONTREAL RIVER
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.019,  Lanes on structure: 2,  Base Highway Network: Yes (Inventory Route: 147,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 13.7m (44.9ft),  Skew: 3 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 15.2m (49.9ft),  Curb-To-Curb Width: 13.7m (44.9ft),  Out-to-Out Width: 14.6m (47.9ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 66.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 34.3 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: August 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 298,  Location: SEC 34-35 IRONWOOD TWP (Lat: 46.512981,  Lng: -90.155989),  Route carried "on" structure: County highway 2778,  Year Built: 1936,  Status: Open,  Structure Length: 0.82m (2.69ft),  Average Daily Traffic: 893 (year 1998),  Average Future Daily Traffic: 893 (year 2018),  Design Load: H 15,  Features Intersected: SPRING CREEK,  Facility Carried by Structure: LAKE ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 6.367,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.9m (25.9ft),  Curb-To-Curb Width: 14.3m (46.9ft),  Out-to-Out Width: 15.3m (50.2ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Fair,  Channel: Good,  Operating Rating: 65.3 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 35.9 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Superior to present desirable criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 1.00m (3.28ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Bridge Improvement Cost: $140,000,  Roadway Improvement Cost: $14,000,  Total Project Cost: $193,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 3008,  Location: SEC 33-34 IRONWOOD TWP (Lat: 46.513350,  Lng: -90.176919),  Route carried "on" structure: County highway ,  Year Built: 1993,  Status: Open,  Structure Length: 2.13m (6.99ft),  Average Daily Traffic: 182 (year 1998),  Average Future Daily Traffic: 182 (year 2018),  Design Load: HS 20+Mod,  Features Intersected: SPRING CREEK,  Facility Carried by Structure: VANDERHAGEN ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 6.755,  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: 20.7m (67.9ft),  Curb-To-Curb Width: 8.2m (26.9ft),  Out-to-Out Width: 8.6m (28.2ft)

Condition: Deck: Fair,  Superstructure: Satisfactory,  Substructure: Very good,  Channel: Good,  Operating Rating: 67.8 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 40.6 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 2.56m (8.40ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Bridge Improvement Cost: $359,000,  Roadway Improvement Cost: $36,000,  Total Project Cost: $494,000,  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 3009,  Location: SEC 27-28 IRONWOOD TWP (Lat: 46.529261,  Lng: -90.176839),  Route carried "on" structure: County highway ,  Year Built: 2002,  Status: Open,  Structure Length: 1.37m (4.49ft),  Average Daily Traffic: 190 (year 2004),  Average Future Daily Traffic: 230 (year 2024),  Design Load: HS 20+Mod,  Features Intersected: NORTH BR SPRING CREEK,  Facility Carried by Structure: VANDERHAGEN ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 8.511,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 12.2m (40.0ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 9.5m (31.2ft)

Condition: Deck: Fair,  Superstructure: Satisfactory,  Substructure: Very good,  Channel: Good,  Operating Rating: 61.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 36.9 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 3011,  Location: SEC 3-4 IRONWOOD TWP (Lat: 46.503036,  Lng: -90.176586),  Route carried "on" structure: County highway ,  Year Built: 1968,  Status: Open,  Structure Length: 0.73m (2.40ft),  Average Daily Traffic: 182 (year 1998),  Average Future Daily Traffic: 182 (year 2018),  Design Load: H 20,  Features Intersected: WELCH CREEK,  Facility Carried by Structure: VANDERHAGEN ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 5.593,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 2 degrees,  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 1.8m (5.9ft)

Condition: Channel: Satisfactory,  Culverts: Poor,  Operating Rating: 62.5 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: Meets minimum limits,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 0.88m (2.89ft),  Designated Inspection Frequency: Every 12 months,  Inspection Date: September 2021,  Bridge Improvement Cost: $123,000,  Roadway Improvement Cost: $12,000,  Total Project Cost: $169,000
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Structure Number: 3012,  Location: SEC 3-4 IRONWOOD TWP (Lat: 46.497294,  Lng: -90.176756),  Route carried "on" structure: County highway ,  Year Built: 1968,  Status: Open,  Structure Length: 0.91m (2.99ft),  Average Daily Traffic: 182 (year 1998),  Design Load: H 20,  Features Intersected: WELCH CREEK,  Facility Carried by Structure: VANDERHAGEN ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 4.954,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 4 degrees,  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 1.8m (5.9ft)

Condition: Channel: Fair,  Culverts: Fair,  Operating Rating: 62.5 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,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 1.10m (3.61ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Bridge Improvement Cost: $154,000,  Roadway Improvement Cost: $16,000,  Total Project Cost: $212,000
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Structure Number: 3013,  Location: SEC 3-4 IRONWOOD TWP (Lat: 46.493517,  Lng: -90.176847),  Route carried "on" structure: County highway ,  Year Built: 1968,  Status: Open,  Structure Length: 0.73m (2.40ft),  Average Daily Traffic: 182 (year 1998),  Average Future Daily Traffic: 182 (year 2018),  Design Load: H 20,  Features Intersected: WELCH CREEK,  Facility Carried by Structure: VANDERHAGEN ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 4.535,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 1 degrees,  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 1.8m (5.9ft)

Condition: Channel: Satisfactory,  Culverts: Poor,  Operating Rating: 62.5 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: Meets minimum limits,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 0.88m (2.89ft),  Designated Inspection Frequency: Every 12 months,  Inspection Date: September 2021,  Bridge Improvement Cost: $123,000,  Roadway Improvement Cost: $12,000,  Total Project Cost: $169,000,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 12849,  Location: IRONWOOD/OMA (WIS) (Lat: 46.440028,  Lng: -90.166578),  Route carried "on" structure: City street ,  Year Built: 2003,  Status: Open,  Structure Length: 1.60m (5.25ft),  Average Daily Traffic: 100 (year 2003),  Average Future Daily Traffic: 158 (year 2023),  Design Load: HS 20,  Features Intersected: MONTREAL RIVER,  Facility Carried by Structure: DUPONT RD (OMA)
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.011,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 15.2m (49.9ft),  Curb-To-Curb Width: 10.4m (34.1ft),  Out-to-Out Width: 11.3m (37.1ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Very good,  Operating Rating: 82.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 49.6 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: Superior to present desirable criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: October 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: 12851,  Location: IRONWOOD/HURLEY(WIS) (Lat: 46.453217,  Lng: -90.179125),  Route carried "on" structure: City street ,  Year Built: 2010,  Status: Open,  Structure Length: 1.54m (5.05ft),  Average Daily Traffic: 5,228 (year 2001),  Average Future Daily Traffic: 6,000 (year 2006),  Features Intersected: MONTREAL RIVER,  Facility Carried by Structure: NORRIE STREET
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 0.013,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Skew: 1 degrees,  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 14.6m (47.9ft),  Curb or Sidewalk Widths: Left: 2.4m (7.9ft),  Right: 2.4m (7.9ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 14.1m (46.3ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Good,  Operating Rating: 49.9 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: 38.6 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: 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: October 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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