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N LASALLE ST over MAIN BR CHICAGO RIV

Map 

Coordinates:
+41.88780, -87.63242
41°53'16" N, 87°37'57" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:N LASALLE ST over MAIN BR CHICAGO RIV
Structure number:016603200000000
Old structure number:000016603226800 (from 1992 edition)
Location:307 N LASALLE ST.
Purpose:Carries highway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:242.1 ft. [73.8 m]
Total length:347.1 ft. [105.8 m]
Roadway width between curbs:56.1 ft. [17.1 m]
Deck width edge-to-edge:86.0 ft. [26.2 m]
Vertical clearance below bridge:16.1 ft. [4.9 m]
Owner:City or Municipal Highway Agency [04]
Year built:1928
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
Main span material:Steel [3]
Main span design:Movable - Bascule [16]
Deck type:Open Grating [3]
Wearing surface:Other [9]

Latest Available Inspection: September 2015 

Status:Open, no restriction [A]
Average daily traffic:19,500 [as of 2014]
Truck traffic:9% of total traffic
Deck condition:Poor [4 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]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Pier/abutment protection:In place but in a deteriorated condition [3]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:45.2 tons [41.1 metric tons]
Inventory rating:27.1 tons [24.6 metric tons]
Evaluation:Structurally deficient [1]
Sufficiency rating:13.9
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$2,612,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
September 201513.9Structurally deficientPoorSeriousFair19500
October 201313.9Structurally deficientPoorSeriousFair19500
October 201122.2Structurally deficientPoorSeriousFair12450
October 200922.2Structurally deficientPoorSeriousFair12450
October 200741.8Structurally deficientPoorPoorFair12050
November 200541.8Structurally deficientPoorPoorFair12050
October 200343.1Structurally deficientPoorPoorFair3004
October 200145.7Structurally deficientPoorPoorFair3004
August 199948.6Structurally deficientSeriousPoorFair3004
August 199748.6Structurally deficientSeriousPoorFair3004
September 199545.5Structurally deficientPoorPoorFair3004
March 199463.6Functionally obsoleteFairFairFair3004
September 199263.6Functionally obsoleteFairFairFair3004
June 199163.3Functionally obsoleteFairFairFair6009