US Bridges

Scappoose-Vernonia over N Fk Scappoose Creek

Fair

Columbia County, Oregon · 001 MI W Spitzenburg · Structure no. 20652 114301392

Built
2007
18 years old
Condition
Fair
inspected May 2023
Type
Slab
Prestressed Concrete
Length
83 ft
1 main span
Daily traffic
1,974
2020 count
Owner
County
County Highway Agency

About this bridge

Scappoose-Vernonia over N Fk Scappoose Creek is a prestressed concrete slab carrying Scappoose-Vernonia over N Fk Scappoose Creek in Columbia County, Oregon. It was built in 2007, so it is 18 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 1,974 vehicles a day, roughly 10% of them trucks, projected to reach 2,234 by 2025. The structure is 83 ft (25.3 m) long and 40 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesScappoose-Vernonia
CrossesN Fk Scappoose Creek
Location001 MI W Spitzenburg
RouteCounty Highway A0744
CountyColumbia County
StateOregon
Coordinates45.82593, -122.96227
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating57.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadOther
Structure length83 ft (25.3 m)
Longest span81 ft (24.7 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,974 (2020)
Projected traffic2,234 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 Scappoose-Vernonia over N Fk Scappoose Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Scappoose-Vernonia over N Fk 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 Scappoose-Vernonia over N Fk Scappoose Creek carry?

About 1,974 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Scappoose-Vernonia over N Fk Scappoose Creek?

The structure is 83 ft (25.3 m) long with a longest span of 81 ft (24.7 m) and a deck 40 ft wide.

Who owns Scappoose-Vernonia over N Fk Scappoose Creek?

It is owned by the County Highway Agency.