US Bridges

SW Western Blvd over Oak CR

FairPosted for load

Benton County, Oregon · W of SW 26th ST · Structure no. 07T24 000 00086

Built
1925
100 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete
Length
43 ft
1 main span
Daily traffic
9,000
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

SW Western Blvd over Oak CR is a concrete tee beam carrying SW Western Blvd over Oak CR in Benton County, Oregon. It was built in 1925, so it is 100 years old, older 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. Its operating status is: posted for load restriction.

It carries about 9,000 vehicles a day, roughly 10% of them trucks, projected to reach 9,900 by 2040. The structure is 43 ft (13.1 m) long and 42 ft wide.

CarriesSW Western Blvd
CrossesOak CR
LocationW of SW 26th ST
RouteCity Street 0
StateOregon
Coordinates44.55698, -123.282
Functional classUrban 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.4 US tons
Inventory rating16.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width42 ft (12.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,000 (2020)
Projected traffic9,900 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$220,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SW Western Blvd over Oak CR built?

It was built in 1925, making it 100 years old in 2025.

What condition is SW Western Blvd over Oak CR 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 July 2024.

How much traffic does SW Western Blvd over Oak CR carry?

About 9,000 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is SW Western Blvd over Oak CR?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 42 ft wide.

Who owns SW Western Blvd over Oak CR?

It is owned by the City or Municipal Highway Agency.