IS 270 W over RT H


+38.76707, -90.18231
38°46'01" N, 90°10'56" 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:14.8 ft. [4.5 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 2015

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:25,526 [as of 2015]
Truck traffic:18% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Very Good [8 out of 9]
Structural appraisal:Equal to present desirable criteria [8]
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]
Operating rating:65.3 tons [59.4 metric tons]
Inventory rating:37.6 tons [34.2 metric tons]
Sufficiency rating:94.8

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201594.8GoodGoodVery GoodVery Good-25526
September 201396.9GoodGoodVery GoodVery Good-24615
September 201196.8GoodGoodVery GoodVery Good-26228
September 200996.7GoodGoodVery GoodVery Good-27642
September 200796.7GoodGoodGoodVery Good-28309
August 200596.7GoodGoodGoodVery Good-27204
August 200479.5GoodGoodGoodVery Good-26463
August 200296.8GoodGoodGoodVery Good-26676
August 200196.7GoodGoodGoodVery Good-26729
July 200095.7FairExcellentSatisfactoryVery Good-24902
June 199860.5PoorPoorSatisfactoryFairSD24902
November 199145.5PoorPoorPoorVery GoodSD27473

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.1,2661,264200
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