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IS 55 S over CST POTOMAC ST

Map 

Coordinates:
+38.58818, -90.21433
38°35'17" N, 90°12'52" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

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:19.4 ft. [5.9 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 2015 

Status:Open, no restriction [A]
Average daily traffic:51,114 [as of 2015]
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]
Operating rating:63.4 tons [57.6 metric tons]
Inventory rating:38.6 tons [35.1 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:73.8
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$1,127,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201573.8Functionally obsoleteSatisfactorySatisfactorySatisfactory51114
August 201373.5Functionally obsoleteSatisfactorySatisfactorySatisfactory56480
August 201173.9Functionally obsoleteSatisfactorySatisfactorySatisfactory50354
September 200973.8Functionally obsoleteSatisfactorySatisfactorySatisfactory51377
August 200773.6Functionally obsoleteSatisfactorySatisfactorySatisfactory55369
August 200573.9Functionally obsoleteSatisfactorySatisfactorySatisfactory49763
July 200373.9Functionally obsoleteSatisfactorySatisfactorySatisfactory49319
June 200176.1Functionally obsoleteSatisfactorySatisfactorySatisfactory48402