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IS 55 S over CST POTOMAC ST

Map

Coordinates:
+38.58832, -90.21450
38°35'18" N, 90°12'52" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IS 55 S over CST POTOMAC ST
Structure number:880
Location:S 34 T 45 N R 7 E
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:61.4 ft. [18.7 m]
Total length:157.2 ft. [47.9 m]
Roadway width between curbs:54.1 ft. [16.5 m]
Deck width edge-to-edge:56.8 ft. [17.3 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:30°
Owner:State Highway Agency [01]
Year built:1965
Year reconstructed:1985
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:Concrete continuous [2]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: August 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:52,494 [as of 2016]
Truck traffic:12% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
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:73.7
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$1,127,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2017FairSatisfactorySatisfactorySatisfactory5249473.7
August 2015FairSatisfactorySatisfactorySatisfactory5111473.8
August 2013FairSatisfactorySatisfactorySatisfactory5648073.5
August 2011FairSatisfactorySatisfactorySatisfactory5035473.9
September 2009FairSatisfactorySatisfactorySatisfactory5137773.8
August 2007FairSatisfactorySatisfactorySatisfactory5536973.6
August 2005FairSatisfactorySatisfactorySatisfactory4976373.9
July 2003FairSatisfactorySatisfactorySatisfactory4931973.9
June 2001FairSatisfactorySatisfactorySatisfactory4840276.1

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Substructure
Reinforced Concrete Columneach80800
Reinforced Concrete Abutmentlinear ft.1668639410
Concrete Protective Coatingsq. ft.4904306
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.3450324210
Deck
Reinforced Concrete Slabsq. ft.8,89805,0273,8710
Wearing Surfacessq. ft.8,49108,49100
Concrete Protective Coatingsq. ft.1850169115