I-405 (HWY 061) NB over CITY STREETS


+45.53261, -122.68699
45°31'57" N, 122°41'13" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I-405 (HWY 061) NB over CITY STREETS
Structure number:09268N061 00284
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:191.0 ft. [58.2 m]
Total length:2367.2 ft. [721.5 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:18.4 ft. [5.6 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:Good [7 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 deficientFairSatisfactoryGood56700
April 201378.0Not deficientFairSatisfactoryGood56700
April 201178.0Not deficientFairSatisfactoryGood56700
February 200978.0Not deficientFairSatisfactoryGood56700
January 200978.0Not deficientFairSatisfactoryGood57267
December 200678.0Not deficientFairSatisfactoryGood56300
December 200579.0Not deficientSatisfactorySatisfactoryGood56300
December 200379.0Not deficientSatisfactorySatisfactoryGood55350
December 200180.0Not deficientSatisfactoryGoodGood54500
December 199980.0Not deficientSatisfactoryGoodGood47001
December 199780.0Not deficientVery GoodVery GoodGood47000
December 199580.0Not deficientVery GoodVery GoodGood40400
December 199380.0Not deficientVery GoodVery GoodGood40400
December 199180.0Not deficientGoodGoodGood40400