US Bridges

Scappoose-Vernonia over S Fk Scappoose Creek

Poor

Columbia County, Oregon · 001 MI NW JCT FAP 1 · Structure no. 13350A114302008

Built
1957
68 years old
Condition
Poor
inspected May 2023
Type
Tee Beam
Concrete Continuous
Length
85 ft
3 main spans
Daily traffic
2,926
2020 count
Owner
County
County Highway Agency

About this bridge

Scappoose-Vernonia over S Fk Scappoose Creek is a concrete continuous tee beam carrying Scappoose-Vernonia over S Fk Scappoose Creek in Columbia County, Oregon. It was built in 1957, so it is 68 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,926 vehicles a day, roughly 10% of them trucks, projected to reach 3,066 by 2025. The structure is 85 ft (25.9 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesScappoose-Vernonia
CrossesS Fk Scappoose Creek
Location001 MI NW JCT FAP 1
RouteCounty Highway A0744
CountyColumbia County
StateOregon
Coordinates45.76372, -122.88
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
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
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.7 US tons
Inventory rating42.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span28 ft (8.5 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,926 (2020)
Projected traffic3,066 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$435,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Scappoose-Vernonia over S Fk Scappoose Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is Scappoose-Vernonia over S Fk Scappoose Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does Scappoose-Vernonia over S Fk Scappoose Creek carry?

About 2,926 vehicles per day (2020 count), of which roughly 10% are trucks.

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

The structure is 85 ft (25.9 m) long with a longest span of 28 ft (8.5 m) and a deck 31 ft wide.

Who owns Scappoose-Vernonia over S Fk Scappoose Creek?

It is owned by the County Highway Agency.