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JOHN R over I-75

Map

Coordinates:
+42.34113, -83.05050
42°20'28" N, 83°03'02" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:JOHN R over I-75
Structure number:000000000011781
Old structure number:82182195000S260 (from 1992 edition)
Location:IN DETROIT
Purpose:Carries highway and pedestrian walkway over highway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:85.0 ft. [25.9 m]
Total length:159.8 ft. [48.7 m]
Roadway width between curbs:60.4 ft. [18.4 m]
Deck width edge-to-edge:85.0 ft. [25.9 m]
Vertical clearance below bridge:14.4 ft. [4.4 m]
Owner:State Highway Agency [01]
Year built:1970
Year reconstructed:1998
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:2
Main spans material:Steel [3]
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: May 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:18,000 [as of 1985]
Truck traffic:3% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:71.2 tons [64.7 metric tons]
Inventory rating:36.1 tons [32.8 metric tons]
Sufficiency rating:80.9

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
May 201680.9FairGoodFairSatisfactoryFO18000
May 201480.9FairGoodFairSatisfactoryFO18000
May 201280.9FairGoodFairSatisfactoryFO18000
May 201080.9FairVery GoodFairSatisfactoryFO18000
May 200880.9FairVery GoodFairSatisfactoryFO18000
May 200683.0FairGoodFairSatisfactory-18000
May 200483.0FairVery GoodFairSatisfactory-18000
May 200283.0FairVery GoodFairSatisfactory-18000
May 200083.0FairVery GoodFairSatisfactory-18000
August 199876.8PoorPoorFairFair-18000
August 199682.6PoorPoorFairSatisfactorySD7900
August 199493.7PoorPoorGoodGoodSD7900
July 199295.8FairFairGoodGood-7900
June 199095.8FairFairGoodVery Good-7900