+47.25886, -122.35744
47°15'32" N, 122°21'27" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SR 509 over HYLEBOS CREEK
Structure number:084942000000000
Location:4.0 N JCT I-705
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:37.1 ft. [11.3 m]
Total length:97.1 ft. [29.6 m]
Roadway width between curbs:47.9 ft. [14.6 m]
Deck width edge-to-edge:67.3 ft. [20.5 m]
Owner:State Highway Agency [01]
Year built:1967
Year reconstructed:1994
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 18 / HS 20 [5]
Number of main spans:3
Main spans material:Concrete [1]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: March 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:19,622 [as of 2012]
Truck traffic:4% of total traffic
Deck condition:Satisfactory [6 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:Basically intolerable requiring high priority of replacement [2]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:71.5
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$1,940,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2017FairSatisfactorySatisfactoryGood1962271.5
March 2015FairSatisfactorySatisfactoryGood1962271.5
March 2013FairSatisfactorySatisfactoryGood2068971.0
March 2011FairSatisfactorySatisfactoryGood2068971.0
January 2009FairSatisfactorySatisfactoryGood2187870.4
September 2006FairSatisfactorySatisfactoryGood2305869.9
December 2004FairSatisfactorySatisfactoryGood2305869.9
August 2002FairSatisfactorySatisfactoryGood2305869.9
September 2000FairSatisfactorySatisfactoryGood2305869.9
September 1998GoodGoodGoodVery Good823679.5
September 1997GoodGoodGoodVery Good823668.4
October 1995GoodGoodGoodVery Good823676.4
November 1994GoodGoodGoodVery Good823676.4
November 1993GoodGoodGoodGood823676.4
August 1992GoodGoodGoodGood823676.4
September 1990GoodGoodGoodGood823676.4

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Reinforced Concrete Decksq. ft.2,7162,716000
Reinforced Concrete Top Flangesq. ft.1,9401,940000
Reinforced Concrete Columneach1818000
Reinforced Concrete Abutmentlinear ft.134134000
Reinforced Concrete Pileeach3232000
Reinforced Concrete Pier Caplinear ft.134134000
Pourable Jointlinear ft.9609600
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.194194000
Reinforced Concrete Slabsq. ft.4,6564,656000