SW 6TH AVE(CONN3) over I-405 (HWY 61)


+45.50755, -122.68415
45°30'27" N, 122°41'03" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SW 6TH AVE(CONN3) over I-405 (HWY 61)
Structure number:09158 061C00102
Location:0.4 MI S OF SW 12TH AVE
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:84.0 ft. [25.6 m]
Total length:267.1 ft. [81.4 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:50.5 ft. [15.4 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:39°
Owner:State Highway Agency [01]
Year built:1964
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 18 / H 20 [4]
Number of main spans:4
Main spans material:Concrete continuous [2]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: July 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:125,300 [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:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Basically intolerable requiring high priority of corrrective action [3]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Operating rating:25.0 tons [22.7 metric tons]
Inventory rating:19.2 tons [17.5 metric tons]
Sufficiency rating:33.3
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$2,244,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201533.3FairSatisfactoryFairSatisfactoryFO125300
July 201333.3FairSatisfactoryFairSatisfactoryFO119800
July 201143.3FairSatisfactorySatisfactoryGoodFO119800
May 201032.3FairFairFairGoodFO78800
May 200833.4FairFairFairGoodFO78800
May 200642.7FairFairFairGoodFO24071
May 200463.3FairFairFairGoodFO24071
March 200278.2FairSatisfactoryGoodGoodFO23370
March 200076.8FairSatisfactoryGoodGoodFO17400
March 199878.9GoodGoodGoodGoodFO17400
March 19960.0GoodGoodGoodGood-17400
March 19940.0FairSatisfactorySatisfactoryGood-17400
March 19920.0FairSatisfactorySatisfactoryGood-17400
March 19900.0FairSatisfactorySatisfactoryGood-16150

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Reinforced Concrete Closed Web/Box Girderlinear ft.1,819902887300
Reinforced Concrete Top Flangesq. ft.16,20914,7399764940
Reinforced Concrete Columneach1515000
Reinforced Concrete Abutmentlinear ft.178178000
Reinforced Concrete Pier Caplinear ft.2232032000
Other Jointlinear ft.178001780
Movable Bearingeach90900
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.534053400