US 12/SR 912 over SR 312, 2 RAMPS


+41.62885, -87.43222
41°37'44" N, 87°25'56" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 12/SR 912 over SR 312, 2 RAMPS
Structure number:033060
Location:01.27 W I-90
Purpose:Carries highway and pedestrian walkway over highway
Route classification:Principal Arterial - Other Freeways or Expressways (Urban) [12]
Length of largest span:104.0 ft. [31.7 m]
Total length:267.1 ft. [81.4 m]
Roadway width between curbs:102.7 ft. [31.3 m]
Deck width edge-to-edge:108.6 ft. [33.1 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Owner:State Highway Agency [01]
Year built:1965
Year reconstructed:1994
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 continuous [4]
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: September 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:71,014 [as of 2004]
Truck traffic:5% of total traffic
Deck condition:Satisfactory [6 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:Superior to present desirable criteria [9]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:85.5

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2018FairSatisfactoryGoodGood7101485.5
July 2017FairSatisfactoryGoodGood7101484.1
July 2015FairSatisfactoryGoodSatisfactory7101484.1
July 2013FairSatisfactoryGoodSatisfactory7101484.1
July 2011GoodGoodGoodGood7101483.9
March 2009GoodGoodGoodGood7101483.9
March 2007GoodGoodGoodGood7101489.0
February 2005GoodGoodGoodGood7101485.5
February 2003GoodGoodGoodGood6962285.7
October 2000GoodGoodGoodGood6962285.7
October 1998GoodGoodVery GoodGood5991687.2
November 1996GoodVery GoodVery GoodGood5991687.2
December 1994GoodExcellentVery GoodGood4450089.0
March 1993PoorPoorGoodGood4450084.6
February 1990PoorPoorGoodFair4450069.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.2,3672,367000
Steel Protective Coatingsq. ft.33,92720,35713,57000
Reinforced Concrete Decksq. ft.28,97828,27870000
Reinforced Concrete Pier Walllinear ft.155155000
Reinforced Concrete Abutmentlinear ft.222222000
Reinforced Concrete Pier Caplinear ft.208208000
Pourable Jointlinear ft.111111000
Elastomeric Bearingeach2727000
Fixed Bearingeach99000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.800800000