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 

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. ratingEvaluationDeckSuper.Sub.ADT
July 201594.8Not deficientGoodVery GoodVery Good25526
September 201396.9Not deficientGoodVery GoodVery Good24615
September 201196.8Not deficientGoodVery GoodVery Good26228
September 200996.7Not deficientGoodVery GoodVery Good27642
September 200796.7Not deficientGoodGoodVery Good28309
August 200596.7Not deficientGoodGoodVery Good27204
August 200479.5Not deficientGoodGoodVery Good26463
August 200296.8Not deficientGoodGoodVery Good26676
August 200196.7Not deficientGoodGoodVery Good26729
July 200095.7Not deficientExcellentSatisfactoryVery Good24902
June 199860.5Structurally deficientPoorSatisfactoryFair24902
November 199145.5Structurally deficientPoorPoorVery Good27473