IS 55 N over CST 2ND ST


+38.61962, -90.18834
38°37'11" N, 90°11'18" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:IS 55 N over CST 2ND ST
Structure number:11901
Location:S 23 T 45 N R 7 E
Purpose:Carries highway overpass over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:89.9 ft. [27.4 m]
Total length:252.0 ft. [76.8 m]
Roadway width between curbs:22.0 ft. [6.7 m]
Deck width edge-to-edge:26.9 ft. [8.2 m]
Vertical clearance below bridge:24.3 ft. [7.4 m]
Skew angle:
Owner:State Highway Agency [01]
Year built:1964
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:Box Beam or girders - Single or Spread [06]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: July 2014 

Status:Posted for load [P]
Average daily traffic:50,430 [as of 2014]
Truck traffic:11% of total traffic
Deck condition:Serious [3 out of 9]
Superstructure condition:Serious [3 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Basically intolerable requiring high priority of corrrective action [3]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Operating rating:108.9 tons [99.0 metric tons]
Inventory rating:65.3 tons [59.4 metric tons]
Evaluation:Structurally deficient [1]
Sufficiency rating:32.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$1,564,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
July 201432.0Structurally deficientSeriousSeriousFair50430
July 201232.0Structurally deficientSeriousSeriousFair47813
August 201132.0Structurally deficientSeriousSeriousFair47813
August 201032.0Structurally deficientSeriousSeriousFair48296
July 200932.0Structurally deficientSeriousSeriousFair48784
July 200832.0Structurally deficientSeriousSeriousFair48287
July 200732.0Structurally deficientSeriousSeriousFair48107
August 200632.0Structurally deficientSeriousSeriousFair48107
July 200532.0Structurally deficientSeriousSeriousFair48040
September 200432.0Structurally deficientSeriousSeriousSatisfactory47659
August 200327.0Structurally deficientSeriousSeriousSatisfactory47611
February 200327.0Structurally deficientSeriousSeriousSatisfactory51499
September 200127.0Structurally deficientSeriousSeriousGood49618