SW 12TH ST over HWY 61


+45.51184, -122.68889
45°30'43" N, 122°41'20" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:SW 12TH ST over HWY 61
Structure number:09255 061 00139
Location:0.2 MI S OF MARKET ST
Purpose:Carries highway over highway
Route classification:Local (Urban) [19]
Length of largest span:102.4 ft. [31.2 m]
Total length:426.5 ft. [130.0 m]
Roadway width between curbs:29.9 ft. [9.1 m]
Deck width edge-to-edge:41.0 ft. [12.5 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:38°
Owner:State Highway Agency [01]
Year built:1967
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:5
Main spans material:Concrete continuous [2]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: July 2015 

Status:Open, no restriction [A]
Average daily traffic:107,500 [as of 2014]
Truck traffic:5% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
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:59.8 tons [54.4 metric tons]
Inventory rating:36.0 tons [32.7 metric tons]
Sufficiency rating:52.0

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
July 201552.0Not deficientSatisfactoryFairSatisfactory107500
July 201352.0Not deficientSatisfactoryFairGood97100
July 201163.0Not deficientSatisfactorySatisfactoryGood97100
May 201063.0Not deficientGoodSatisfactoryGood115600
May 200864.0Not deficientGoodSatisfactoryGood115600
May 200680.3Not deficientGoodSatisfactoryGood5459
May 200469.2Not deficientGoodFairGood5300
March 200268.7Not deficientGoodGoodGood121680
March 200067.7Not deficientGoodGoodGood93600
20000.0Not applicable---84900
March 199877.8Not deficientGoodGoodGood10300
March 19960.0Not applicableGoodGoodGood10300
March 19940.0Not applicableGoodGoodGood10300
March 19920.0Not applicableGoodSatisfactoryGood10300
March 19900.0Not applicableGoodGoodGood9600