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US-12 over I-75 SB

Map

Coordinates:
+42.33148, -83.08577
42°19'53" N, 83°05'09" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts

Name:US-12 over I-75 SB
Structure number:000000000011749
Old structure number:82182194000S200 (from 1992 edition)
Location:IN DETROIT
Purpose:Carries highway and pedestrian walkway over highway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:82.0 ft. [25.0 m]
Total length:188.0 ft. [57.3 m]
Roadway width between curbs:93.8 ft. [28.6 m]
Deck width edge-to-edge:112.2 ft. [34.2 m]
Vertical clearance below bridge:14.8 ft. [4.5 m]
Skew angle:34°
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+Mod / HS 20+Mod [6]
Number of main spans:3
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:Good
Status:Open, no restriction [A]
Average daily traffic:11,831 [as of 2007]
Truck traffic:10% of total traffic
Deck condition:Very Good [8 out of 9]
Superstructure condition:Good [7 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: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:80.2 tons [72.9 metric tons]
Inventory rating:40.6 tons [36.9 metric tons]
Sufficiency rating:77.0

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
May 201677.0GoodVery GoodGoodGoodFO11831
May 201477.0GoodVery GoodVery GoodGoodFO11831
May 201277.0GoodVery GoodVery GoodGoodFO11831
June 201077.0GoodVery GoodVery GoodGoodFO11831
June 200877.0GoodVery GoodVery GoodGoodFO11831
June 200677.0GoodVery GoodVery GoodGood-12657
June 200477.0GoodVery GoodVery GoodGood-12000
June 200277.0GoodVery GoodVery GoodGood-12000
July 200077.0GoodExcellentVery GoodGood-12000
August 199977.0GoodExcellentVery GoodGood-12000
November 199832.0PoorSeriousFairSerious-12000
June 199746.4PoorPoorFairPoorSD46100
August 199462.2PoorPoorGoodFairSD46100
July 199264.2FairFairVery GoodFairFO46100
June 199064.2FairFairVery GoodFairFO46100