US Bridges

Olney ST over Beaver Creek

Fair

Marion County, Oregon · 006 MI West Aumsville · Structure no. 18174 858

Built
1996
29 years old
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
76 ft
2 main spans
Daily traffic
870
2020 count
Owner
County
County Highway Agency

About this bridge

Olney ST over Beaver Creek is a prestressed concrete slab carrying Olney ST over Beaver Creek in Marion County, Oregon. It was built in 1996, so it is 29 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 5 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 870 vehicles a day, roughly 10% of them trucks, projected to reach 970 by 2025. The structure is 76 ft (23.2 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesOlney ST
CrossesBeaver Creek
Location006 MI West Aumsville
RouteCounty Highway C0858
CountyMarion County
StateOregon
Coordinates44.85034, -122.89281
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.7 US tons
Inventory rating50.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 25 or greater
Structure length76 ft (23.2 m)
Longest span37 ft (11.3 m)
Deck width40 ft (12.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic870 (2020)
Projected traffic970 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Olney ST over Beaver Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Olney ST over Beaver 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 August 2024.

How much traffic does Olney ST over Beaver Creek carry?

About 870 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Olney ST over Beaver Creek?

The structure is 76 ft (23.2 m) long with a longest span of 37 ft (11.3 m) and a deck 40 ft wide.

Who owns Olney ST over Beaver Creek?

It is owned by the County Highway Agency.