I-405 (HWY 061) CO over HWY 61 & CONN 4


+45.50643, -122.68199
45°30'23" N, 122°40'55" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I-405 (HWY 061) CO over HWY 61 & CONN 4
Structure number:09254A061C00209
Location:0.5 MI SW PORT CC
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:28.9 ft. [8.8 m]
Total length:33.1 ft. [10.1 m]
Roadway width between curbs:56.1 ft. [17.1 m]
Deck width edge-to-edge:204.1 ft. [62.2 m]
Vertical clearance below bridge:15.7 ft. [4.8 m]
Skew angle:99°
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]
Main span material:Concrete [1]
Main span design:Frame [07]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: July 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:31,200 [as of 2014]
Truck traffic:5% 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:Superior to present desirable criteria [9]
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:97.8 tons [88.9 metric tons]
Inventory rating:97.8 tons [88.9 metric tons]
Sufficiency rating:94.0

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201594.0FairFairSatisfactorySatisfactory-31200
July 201390.0FairGoodSatisfactorySatisfactory-29400
July 201190.0FairGoodGoodSatisfactory-29400
April 201091.3GoodGoodGoodGood-16823
April 200891.3GoodGoodGoodGood-16823
April 200691.4FairGoodGoodSatisfactory-16171
April 200491.4FairGoodGoodSatisfactory-16171
March 200296.5Good-GoodGood-15700
March 200096.5Good-GoodGood-15700
March 199896.5Good-GoodGood-15700
March 199694.8Good-GoodGoodFO15700
March 199494.8Good-GoodGoodFO15700
March 199294.8Good-GoodGoodFO15700
March 199092.8Good-Very GoodGoodFO14800

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Reinforced Concrete Abutmentlinear ft.4080392160
Reinforced Concrete Slabsq. ft.6,7326601,1224,9500
Wearing Surfacessq. ft.2,9232,923000