I-75 over M-85 (FORT ST)


+42.27836, -83.15341
42°16'42" N, 83°09'12" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-75 over M-85 (FORT ST)
Structure number:000000000011733
Old structure number:82182194000S050 (from 1992 edition)
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:107.9 ft. [32.9 m]
Total length:298.9 ft. [91.1 m]
Roadway width between curbs:97.8 ft. [29.8 m]
Deck width edge-to-edge:153.6 ft. [46.8 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:50°
Owner:State Highway Agency [01]
Year built:1967
Year reconstructed:2002
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 22.5 / HS 25 [9]
Number of main spans:2
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: June 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:105,854 [as of 2007]
Truck traffic:12% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:65.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
June 2017GoodGoodVery GoodGood10585465.0
June 2015GoodGoodVery GoodGood10585465.0
June 2013GoodGoodVery GoodGood10585465.0
June 2011GoodGoodVery GoodGood10585463.6
June 2009GoodGoodVery GoodGood10585463.6
May 2008GoodVery GoodVery GoodGood10585475.6
May 2006GoodVery GoodVery GoodGood10450475.6
May 2004GoodVery GoodVery GoodGood9100075.6
May 2002FairSatisfactoryGoodFair9100064.6
May 2000FairSatisfactoryGoodFair9100064.6
July 1998FairGoodGoodFair9100069.6
September 1996FairGoodVery GoodFair8900066.0
August 1994FairGoodVery GoodSatisfactory8900078.0
June 1992FairGoodVery GoodSatisfactory8900078.0
May 1990FairGoodVery GoodSatisfactory8900078.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Prestressed Concrete Girder/Beamlinear ft.5,9805,980000
Reinforced Concrete Decksq. ft.45,90845,65825000
Reinforced Concrete Columneach4545000
Reinforced Concrete Abutmentlinear ft.310310000
Reinforced Concrete Pier Caplinear ft.461461000
Strip Seal Jointlinear ft.307307000
Pourable Jointlinear ft.3072310760
Elastomeric Bearingeach140140000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.1,19659859800