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N CLARK ST over MAIN BR CHICAGO RIV

Map

Coordinates:
+41.88774, -87.63102
41°53'16" N, 87°37'52" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts

Name:N CLARK ST over MAIN BR CHICAGO RIV
Structure number:016601000000000
Old structure number:000016601027335 (from 1992 edition)
Location:307 N CLARK
Purpose:Carries highway over waterway
Route classification:Collector (Urban) [17]
Length of largest span:245.4 ft. [74.8 m]
Total length:346.1 ft. [105.5 m]
Roadway width between curbs:38.1 ft. [11.6 m]
Deck width edge-to-edge:71.9 ft. [21.9 m]
Vertical clearance below bridge:20.0 ft. [6.1 m]
Owner:City or Municipal Highway Agency [04]
Year built:1929
Year reconstructed:1985
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
Design load:MS 18 / HS 20 [5]
Main span material:Steel [3]
Main span design:Movable - Bascule [16]
Deck type:Open Grating [3]
Wearing surface:Other [9]

Latest Available Inspection: October 2016

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:9,200 [as of 2014]
Truck traffic:11% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Poor [4 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Better than present minimum criteria [7]
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:63.0 tons [57.3 metric tons]
Inventory rating:39.9 tons [36.3 metric tons]
Sufficiency rating:48.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$2,111,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
October 201648.0PoorFairPoorPoorSD9200
October 201448.0PoorFairPoorFairSD9200
November 201264.0FairFairFairFairFO12700
December 201064.0FairFairFairFairFO12700
November 200864.0FairFairFairFairFO14800
October 200664.0FairFairFairFairFO14800
October 200464.0FairFairFairFairFO16300
October 200264.0FairFairFairFairFO16300
November 200064.0FairFairFairFairFO15909
August 199848.0PoorFairPoorFairSD15909
May 199679.0FairFairFairFairFO-
May 199479.0FairFairFairFairFO-
September 199291.0FairSatisfactorySatisfactorySatisfactory--
August 199091.0FairGoodSatisfactorySatisfactory--