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12 AVE S over DEARBORN ST

Map 

Coordinates:
+47.59584, -122.31723
47°35'45" N, 122°19'02" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:12 AVE S over DEARBORN ST
Structure number:085042000000000
Location:12th Ave S & Dearborn St
Purpose:Carries highway and pedestrian walkway over highway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:170.9 ft. [52.1 m]
Total length:495.1 ft. [150.9 m]
Roadway width between curbs:42.0 ft. [12.8 m]
Deck width edge-to-edge:65.0 ft. [19.8 m]
Vertical clearance below bridge:55.1 ft. [16.8 m]
Owner:City or Municipal Highway Agency [04]
Year built:1917
Historic significance:Bridge is on the National Register of Historic Places [1]
Number of main spans:3
Main spans material:Steel continuous [4]
Main spans design:Truss - Deck [09]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: May 2016 

Status:Open, no restriction [A]
Average daily traffic:17,800 [as of 2014]
Truck traffic:5% 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:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Scour condition:Bridge not over waterway. [N]
Operating rating:43.6 tons [39.6 metric tons]
Inventory rating:26.7 tons [24.3 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:68.1
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$29,640,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
May 201668.1Functionally obsoleteSatisfactorySatisfactorySatisfactory17800
May 201468.9Functionally obsoleteSatisfactorySatisfactorySatisfactory11500
July 201267.0Functionally obsoleteGoodSatisfactoryGood25700
July 201167.0Functionally obsoleteSatisfactorySatisfactoryGood25700
May 201055.2Functionally obsoleteSatisfactoryFairGood25700
August 200763.7Functionally obsoleteSatisfactoryFairSatisfactory22800
August 200666.7Functionally obsoleteSatisfactoryFairGood22800
October 200463.7Functionally obsoleteSatisfactoryFairGood22800
May 200375.5Functionally obsoleteSatisfactoryGoodGood21100
January 200375.5Functionally obsoleteSatisfactoryGoodGood21100
August 200075.5Functionally obsoleteSatisfactoryGoodGood21000
March 199875.5Functionally obsoleteSatisfactoryGoodGood21000
February 199775.5Functionally obsoleteSatisfactoryGoodGood21000
February 199576.0Functionally obsoleteSatisfactoryGoodGood21000
April 199476.0Functionally obsoleteSatisfactoryGoodGood21000
November 199276.0Functionally obsoleteSatisfactoryGoodGood21000
April 199176.4Functionally obsoleteSatisfactoryGoodGood16300