I-75 over 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 FORT ST
Structure number:000000000011734
Old structure number:82182194000S060 (from 1992 edition)
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:123.0 ft. [37.5 m]
Total length:821.9 ft. [250.5 m]
Roadway width between curbs:125.7 ft. [38.3 m]
Deck width edge-to-edge:132.6 ft. [40.4 m]
Vertical clearance below bridge:14.8 ft. [4.5 m]
Skew angle:66°
Owner:State Highway Agency [01]
Year built:1967
Year reconstructed:1981
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:10
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: May 2015 

Status:Open, no restriction [A]
Average daily traffic:100,492 [as of 2007]
Truck traffic:12% of total traffic
Deck condition:Poor [4 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Superior to present desirable criteria [9]
Underclearances appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:57.0 tons [51.8 metric tons]
Inventory rating:34.2 tons [31.1 metric tons]
Evaluation:Structurally deficient [1]
Sufficiency rating:78.5
Recommended work:Bridge deck replacement with only incidental widening. [37]

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
May 201578.5Structurally deficientPoorSatisfactoryFair100492
May 201378.5Structurally deficientPoorSatisfactoryFair100492
May 201191.5Not deficientFairSatisfactorySatisfactory100492
May 200991.5Not deficientFairSatisfactorySatisfactory100492
June 200791.5Not deficientFairSatisfactorySatisfactory103000
June 200591.5Not deficientFairSatisfactorySatisfactory99000
April 200391.5Not deficientFairSatisfactorySatisfactory99000
April 200191.5Not deficientFairSatisfactorySatisfactory99000
May 199996.5Not deficientFairSatisfactorySatisfactory99000
July 199792.0Not deficientFairSatisfactorySatisfactory99000
August 199666.0Structurally deficientSatisfactorySatisfactoryPoor84000
August 199466.0Structurally deficientSatisfactoryVery GoodPoor93000
June 199266.0Structurally deficientSatisfactoryVery GoodPoor93000
May 199066.0Structurally deficientGoodVery GoodPoor93000