I-405 (HWY 061) SB over CITY STREETS


+45.53261, -122.68730
45°31'57" N, 122°41'14" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I-405 (HWY 061) SB over CITY STREETS
Structure number:09268S061 00284
Purpose:Carries highway overpass over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:196.9 ft. [60.0 m]
Total length:2384.0 ft. [726.6 m]
Roadway width between curbs:52.2 ft. [15.9 m]
Deck width edge-to-edge:55.4 ft. [16.9 m]
Vertical clearance above deck:19.0 ft. [5.8 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Owner:State Highway Agency [01]
Year built:1972
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:6
Main spans material:Steel continuous [4]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: November 2013 

Status:Open, no restriction [A]
Average daily traffic:56,700 [as of 2010]
Truck traffic:10% of total traffic
Deck condition:Fair [5 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Equal to present minimum criteria [6]
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:78.0

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
November 201378.0Not deficientFairSatisfactorySatisfactory56700
April 201378.0Not deficientFairSatisfactorySatisfactory56700
April 201178.0Not deficientFairSatisfactorySatisfactory56700
February 200976.0Not deficientFairSatisfactorySatisfactory56700
January 200976.0Not deficientFairSatisfactorySatisfactory57267
December 200676.0Not deficientFairSatisfactorySatisfactory56300
December 200577.0Not deficientSatisfactorySatisfactorySatisfactory56300
December 200377.0Not deficientSatisfactorySatisfactorySatisfactory55350
December 200178.0Not deficientSatisfactoryGoodGood54500
December 199978.0Not deficientSatisfactoryGoodGood47001
December 199780.0Not deficientGoodGoodGood47000
December 199580.0Not deficientGoodGoodGood40400
December 199380.0Not deficientGoodGoodGood40400
December 199180.0Not deficientGoodGoodVery Good40400