+46.17950, -123.37708
46°10'46" N, 123°22'37" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SR 409 over BIRNIE SLOUGH
Structure number:0003264A0000000
Location:1.8 N FERRY DOCK
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:60.0 ft. [18.3 m]
Total length:192.9 ft. [58.8 m]
Roadway width between curbs:25.9 ft. [7.9 m]
Deck width edge-to-edge:32.5 ft. [9.9 m]
Owner:State Highway Agency [01]
Year built:1947
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 13.5 / H 15 [2]
Number of main spans:5
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: April 2018

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:919 [as of 2016]
Truck traffic:6% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 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]
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:67.0
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$2,162,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
April 2018GoodGoodGoodGood91967.0
April 2016GoodGoodGoodGood86763.1
April 2014GoodGoodGoodGood86763.1
April 2012GoodGoodGoodGood107459.5
April 2010GoodGoodGoodGood119858.0
May 2008GoodGoodGoodGood119858.0
June 2006GoodGoodGoodGood163957.5
October 2004GoodGoodGoodGood163957.5
June 2002GoodGoodGoodGood163957.5
August 2000GoodGoodGoodGood163957.5
June 1998GoodGoodGoodGood163957.5
December 1996GoodGoodGoodGood163956.2
November 1994GoodGoodGoodGood163942.3
November 1992GoodGoodGoodGood106044.0
November 1990FairSatisfactoryGoodGood106044.0