US Bridges

West Lane Road over Scappoose Creek

Fair

Columbia County, Oregon · 005 MI NW Scappoose Airpt · Structure no. 13752A116000192

Built
1982
43 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Prestressed Concrete
Length
104 ft
1 main span
Daily traffic
1,043
2020 count
Owner
County
County Highway Agency

About this bridge

West Lane Road over Scappoose Creek is a prestressed concrete tee beam carrying West Lane Road over Scappoose Creek in Columbia County, Oregon. It was built in 1982, so it is 43 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,043 vehicles a day, roughly 10% of them trucks, projected to reach 1,183 by 2025. The structure is 104 ft (31.7 m) long and 31 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesWest Lane Road
CrossesScappoose Creek
Location005 MI NW Scappoose Airpt
RouteCounty Highway A0743
CountyColumbia County
StateOregon
Coordinates45.77969, -122.87293
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating13.6 US tons
Inventory rating10.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length104 ft (31.7 m)
Longest span102 ft (31.1 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,043 (2020)
Projected traffic1,183 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was West Lane Road over Scappoose Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is West Lane Road over Scappoose Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does West Lane Road over Scappoose Creek carry?

About 1,043 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is West Lane Road over Scappoose Creek?

The structure is 104 ft (31.7 m) long with a longest span of 102 ft (31.1 m) and a deck 31 ft wide.

Who owns West Lane Road over Scappoose Creek?

It is owned by the County Highway Agency.