IS 270 W over RT H


+38.76712, -90.18237
38°46'02" N, 90°10'57" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IS 270 W over RT H
Structure number:824
Old structure number:A10251 3 (from 1992 edition)
Location:S 114 T 47 N R 7 E
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:63.0 ft. [19.2 m]
Total length:215.9 ft. [65.8 m]
Roadway width between curbs:44.3 ft. [13.5 m]
Deck width edge-to-edge:46.9 ft. [14.3 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:
Owner:State Highway Agency [01]
Year built:1962
Year reconstructed:1999
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:4
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: July 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:26,661 [as of 2017]
Truck traffic:18% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Very Good [8 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:94.7

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2017GoodGoodGoodVery Good2666194.7
July 2015GoodGoodVery GoodVery Good2552694.8
September 2013GoodGoodVery GoodVery Good2461596.9
September 2011GoodGoodVery GoodVery Good2622896.8
September 2009GoodGoodVery GoodVery Good2764296.7
September 2007GoodGoodGoodVery Good2830996.7
August 2005GoodGoodGoodVery Good2720496.7
August 2004GoodGoodGoodVery Good2646379.5
August 2002GoodGoodGoodVery Good2667696.8
August 2001GoodGoodGoodVery Good2672996.7
July 2000FairExcellentSatisfactoryVery Good2490295.7
June 1998PoorPoorSatisfactoryFair2490260.5
November 1991PoorPoorPoorVery Good2747345.5

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,2661,2501600
Steel Protective Coatingsq. ft.11,3013,7297,57200
Reinforced Concrete Decksq. ft.10,1548,1222,03200
Reinforced Concrete Columneach99000
Reinforced Concrete Abutmentlinear ft.1291072200
Reinforced Concrete Pier Caplinear ft.138130800
Elastomeric Bearingeach1818000
Enclosed/Concealed Bearingeach1212000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.465046500