I-405 (HWY 061)CON over 61 NB CONN TO HWY 1 SB


+45.54328, -122.67644
45°32'36" N, 122°40'35" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-405 (HWY 061)CON over 61 NB CONN TO HWY 1 SB
Structure number:08958D061 00352
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:160.1 ft. [48.8 m]
Total length:1578.2 ft. [481.0 m]
Roadway width between curbs:25.9 ft. [7.9 m]
Deck width edge-to-edge:29.5 ft. [9.0 m]
Vertical clearance above deck:18.0 ft. [5.5 m]
Owner:State Highway Agency [01]
Year built:1973
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:7
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: February 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:14,700 [as of 2014]
Truck traffic:7% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:29.6 tons [26.9 metric tons]
Inventory rating:22.8 tons [20.7 metric tons]
Sufficiency rating:75.7

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
February 201775.7FairSatisfactoryGoodGood-14700
March 201491.1FairSatisfactoryGoodGood-14800
March 201291.1FairSatisfactoryGoodGood-14800
June 200990.9FairSatisfactoryGoodGood-15130
June 200791.0FairSatisfactoryGoodGood-14980
December 200591.2FairSatisfactoryGoodGood-14544
December 200379.2FairSatisfactoryFairSatisfactory-14544
December 200191.4GoodGoodGoodGood-14120
December 199992.9GoodVery GoodGoodGood-10801
December 199792.9GoodVery GoodGoodGood-10800
December 199593.1GoodVery GoodGoodGood-10800
December 199393.1GoodGoodGoodGood-10800
December 199193.1GoodGoodGoodGood-10800