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JOHN R over I-75

Map 

Coordinates:
+42.34113, -83.05050
42°20'28" N, 83°03'02" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

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 2014 

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]
Evaluation:Functionally obsolete [2]
Sufficiency rating:80.9

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
May 201480.9Functionally obsoleteGoodFairSatisfactory18000
May 201280.9Functionally obsoleteGoodFairSatisfactory18000
May 201080.9Functionally obsoleteVery GoodFairSatisfactory18000
May 200880.9Functionally obsoleteVery GoodFairSatisfactory18000
May 200683.0Not deficientGoodFairSatisfactory18000
May 200483.0Not deficientVery GoodFairSatisfactory18000
May 200283.0Not deficientVery GoodFairSatisfactory18000
May 200083.0Not deficientVery GoodFairSatisfactory18000
August 199876.8Not deficientPoorFairFair18000
August 199682.6Structurally deficientPoorFairSatisfactory7900
August 199493.7Structurally deficientPoorGoodGood7900
July 199295.8Not deficientFairGoodGood7900
June 199095.8Not deficientFairGoodVery Good7900