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US 20 (HWY 033) FR over W OLALLA SLOUGH

Map

Coordinates:
+44.63471, -123.92586
44°38'05" N, 123°55'33" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 20 (HWY 033) FR over W OLALLA SLOUGH
Structure number:02275 033F00817
Location:0243 M JCT HWY 181
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:23.0 ft. [7.0 m]
Total length:68.9 ft. [21.0 m]
Roadway width between curbs:25.9 ft. [7.9 m]
Deck width edge-to-edge:34.8 ft. [10.6 m]
Owner:County Highway Agency [02]
Year built:1936
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:3
Main spans material:Wood or timber [7]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: October 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:4,400 [as of 2017]
Truck traffic:17% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Basically intolerable requiring high priority of corrrective action [3]
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]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge with "unknown" foundation that has not been evaluated for scour. [U]
Sufficiency rating:57.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2018FairSatisfactorySatisfactoryFair440057.0
October 2016FairSatisfactorySatisfactoryFair350057.3
October 2014FairSatisfactoryGoodFair80861.3
October 2012FairSatisfactoryGoodFair80861.3
October 2010FairSatisfactoryGoodFair80861.3
June 2009FairGoodGoodSatisfactory80872.3
July 2007FairGoodGoodSatisfactory77771.8
June 2005FairGoodGoodSatisfactory77771.8
October 2004FairGoodGoodSatisfactory75471.6
October 2002FairGoodGoodSatisfactory75471.6
October 2000FairGoodGoodSatisfactory58077.3
October 1998FairGoodSatisfactoryFair58066.2
October 1996FairGoodFairFair50066.2
October 1995FairGoodFairFair50065.7
October 1994FairGoodFairFair50065.7
August 1993PoorGoodFairSerious50028.3
July 1992PoorGoodGoodSerious50028.3
June 1991PoorGoodGoodSerious50028.3

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Timber Girder/Beamlinear ft.759584130450
Deck
Reinforced Concrete Decksq. ft.2,4092,406300
Wearing Surfacessq. ft.2,4092,3832600
Substructure
Timber Abutmentlinear ft.7070000
Reinforced Concrete Pile Cap/Footinglinear ft.88000
Steel Pileeach20200
Timber Pileeach1810602
Steel Pier Caplinear ft.3503050
Steel Protective Coatingsq. ft.8550155350350
Timber Pier Caplinear ft.3535000
Joints
Other Jointlinear ft.7070000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.1521064600