US-12 over I-75 NB


+42.33148, -83.08456
42°19'53" N, 83°05'04" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:US-12 over I-75 NB
Structure number:000000000011748
Old structure number:82182194000S190 (from 1992 edition)
Purpose:Carries highway and pedestrian walkway over highway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:107.0 ft. [32.6 m]
Total length:229.0 ft. [69.8 m]
Roadway width between curbs:93.8 ft. [28.6 m]
Deck width edge-to-edge:113.2 ft. [34.5 m]
Vertical clearance below bridge:13.8 ft. [4.2 m]
Skew angle:48°
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: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:Fair
Status:Open, no restriction [A]
Average daily traffic:13,147 [as of 2007]
Truck traffic:10% of total traffic
Deck condition:Very Good [8 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
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:85.4 tons [77.6 metric tons]
Inventory rating:50.4 tons [45.8 metric tons]
Sufficiency rating:75.0

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
May 201675.0FairVery GoodSatisfactorySatisfactoryFO13147
May 201475.0FairVery GoodSatisfactorySatisfactoryFO13147
May 201275.0FairVery GoodSatisfactorySatisfactoryFO13147
June 201075.0FairVery GoodSatisfactorySatisfactoryFO13147
June 200875.0FairVery GoodSatisfactorySatisfactoryFO13147
June 200675.0FairVery GoodSatisfactorySatisfactory-11326
June 200475.0FairSatisfactorySatisfactorySatisfactory-12000
June 200275.0FairVery GoodSatisfactorySatisfactory-12000
May 200075.0FairVery GoodSatisfactorySatisfactory-12000
August 199862.0FairFairFairFair-12000
August 199663.3FairSatisfactoryGoodGoodFO46100
August 199460.0PoorPoorGoodGoodSD46100
July 199260.0PoorPoorVery GoodGoodSD46100
June 199060.0PoorPoorVery GoodGoodSD46100