US Bridges

Olson Rd. over Perkins Creek

Fair

Columbia County, Oregon · S City of Clatskanie · Structure no. 24376 405200215

Built
2024
1 years old
Condition
Fair
inspected December 2024
Type
Slab
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
311
2020 count
Owner
County
County Highway Agency

About this bridge

Olson Rd. over Perkins Creek is a prestressed concrete slab carrying Olson Rd. over Perkins Creek in Columbia County, Oregon. It was built in 2024, so it is 1 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 311 vehicles a day, roughly 10% of them trucks, projected to reach 351 by 2025. The structure is 37 ft (11.3 m) long and 30 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesOlson Rd.
CrossesPerkins Creek
LocationS City of Clatskanie
RouteCounty Highway C4052
CountyColumbia County
StateOregon
Coordinates46.07349, -123.17423
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating53.6 US tons
Inventory rating41.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length37 ft (11.3 m)
Longest span37 ft (11.3 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic311 (2020)
Projected traffic351 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Olson Rd. over Perkins Creek built?

It was built in 2024, making it 1 years old in 2025.

What condition is Olson Rd. over Perkins 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 December 2024.

How much traffic does Olson Rd. over Perkins Creek carry?

About 311 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Olson Rd. over Perkins Creek?

The structure is 37 ft (11.3 m) long with a longest span of 37 ft (11.3 m) and a deck 30 ft wide.

Who owns Olson Rd. over Perkins Creek?

It is owned by the County Highway Agency.