US Bridges

NW Oak Creek DR over Oak Creek

Fair

Benton County, Oregon · 20 NW of SW 53rd St-Walnu · Structure no. 003C32000000195

Built
1984
41 years old
Condition
Fair
inspected July 2024
Type
Culvert
Steel
Length
24 ft
1 main span
Daily traffic
1,393
2020 count
Owner
County
County Highway Agency

About this bridge

NW Oak Creek DR over Oak Creek is a steel culvert carrying NW Oak Creek DR over Oak Creek in Benton County, Oregon. It was built in 1984, so it is 41 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 1,393 vehicles a day, roughly 10% of them trucks, projected to reach 1,967 by 2040. The structure is 24 ft (7.3 m) long and 37 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNW Oak Creek DR
CrossesOak Creek
Location20 NW of SW 53rd St-Walnu
RouteCounty Highway 0
CountyBenton County
StateOregon
Coordinates44.57209, -123.32001
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width37 ft (11.3 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,393 (2020)
Projected traffic1,967 by 2040
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 NW Oak Creek DR over Oak Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is NW Oak Creek DR over Oak 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 July 2024.

How much traffic does NW Oak Creek DR over Oak Creek carry?

About 1,393 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is NW Oak Creek DR over Oak Creek?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m) and a deck 37 ft wide.

Who owns NW Oak Creek DR over Oak Creek?

It is owned by the County Highway Agency.