US-12 over I-75 SB


+42.33146, -83.08579
42°19'53" N, 83°05'09" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US-12 over I-75 SB
Structure number:000000000011749
Old structure number:82182194000S200 (from 1992 edition)
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:13.1 ft. [4.0 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 2018

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]
Sufficiency rating:77.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
May 2018GoodVery GoodGoodGood1183177.0
May 2016GoodVery GoodGoodGood1183177.0
May 2014GoodVery GoodVery GoodGood1183177.0
May 2012GoodVery GoodVery GoodGood1183177.0
June 2010GoodVery GoodVery GoodGood1183177.0
June 2008GoodVery GoodVery GoodGood1183177.0
June 2006GoodVery GoodVery GoodGood1265777.0
June 2004GoodVery GoodVery GoodGood1200077.0
June 2002GoodVery GoodVery GoodGood1200077.0
July 2000GoodExcellentVery GoodGood1200077.0
August 1999GoodExcellentVery GoodGood1200077.0
November 1998PoorSeriousFairSerious1200032.0
June 1997PoorPoorFairPoor4610046.4
August 1994PoorPoorGoodFair4610062.2
July 1992FairFairVery GoodFair4610064.2
June 1990FairFairVery GoodFair4610064.2

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.2,9632,9333000
Reinforced Concrete Decksq. ft.25,11225,112000
Steel Pin or Pin & Hangar Assemblyeach3230200
Reinforced Concrete Columneach2016400
Reinforced Concrete Abutmentlinear ft.272267500
Reinforced Concrete Pier Caplinear ft.2722621000
Strip Seal Jointlinear ft.46002720188
Pourable Jointlinear ft.272272000
Movable Bearingeach3232000
Fixed Bearingeach3232000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.376376000
Reinforced Concrete Bridge Raillinear ft.376376000