Clatskanie Heights over CONYERS CREEK


+46.09497, -123.20874
46°05'42" N, 123°12'31" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:Clatskanie Heights over CONYERS CREEK
Structure number:13777B408900010
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:55.1 ft. [16.8 m]
Total length:56.1 ft. [17.1 m]
Roadway width between curbs:27.6 ft. [8.4 m]
Deck width edge-to-edge:27.9 ft. [8.5 m]
Owner:County Highway Agency [02]
Year built:1978
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Prestressed concrete [5]
Main span design:Slab [01]
Deck type:Other [9]
Wearing surface:Bituminous [6]

Latest Available Inspection: May 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:337 [as of 2010]
Truck traffic:10% of total traffic
Deck condition:Satisfactory [6 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present minimum criteria [6]
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 with "unknown" foundation that has not been evaluated for scour. [U]
Sufficiency rating:81.1

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
May 2017FairSatisfactorySatisfactorySatisfactory33781.1
May 2015FairSatisfactorySatisfactorySatisfactory33781.1
May 2013FairSatisfactorySatisfactorySatisfactory33781.1
July 2011FairSatisfactorySatisfactorySatisfactory33781.1
June 2009PoorSatisfactorySatisfactoryPoor33752.2
January 2009PoorVery GoodVery GoodPoor33752.2
September 2007PoorVery GoodVery GoodPoor32452.4
September 2004PoorVery GoodVery GoodPoor32453.4
October 2002FairVery GoodVery GoodFair32470.6
September 2000GoodVery GoodVery GoodGood31082.3
September 1998FairVery GoodVery GoodSatisfactory30082.4
May 1996FairVery GoodVery GoodSatisfactory30082.4
April 1994FairVery GoodVery GoodSatisfactory30085.3
March 1992FairVery GoodVery GoodSatisfactory30085.3
January 1990GoodVery GoodVery GoodVery Good24086.1

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Prestressed Concrete Decksq. ft.1,0921,087500
Wearing Surfacessq. ft.1,0921,0722000
Reinforced Concrete Abutmentlinear ft.5653300
Reinforced Concrete Pile Cap/Footinglinear ft.1616000
Steel Pileeach11000
Other Jointlinear ft.5605600
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.125125000
Steel Protective Coatingsq. ft.775077500