US Bridges

US 12 over Oak Creek

Good

Yakima County, Washington · 32.1 E Lewis CO · Structure no. 0014234A0000000

Built
1993
32 years old
Condition
Good
inspected August 2022
Type
Culvert
Steel
Length
22 ft
1 main span
Daily traffic
2,475
2023 count
Owner
State
State Highway Agency

About this bridge

US 12 over Oak Creek is a steel culvert carrying US 12 over Oak Creek in Yakima County, Washington. It was built in 1993, so it is 32 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,475 vehicles a day, roughly 20% of them trucks, projected to reach 3,013 by 2039. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 47.2 mi (76 km).

CarriesUS 12
CrossesOak Creek
Location32.1 E Lewis CO
RouteU.S. Route 12
Coordinates46.72372, -120.81418
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,475 (2023)
Projected traffic3,013 by 2039
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.2 mi (76 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$334,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 12 over Oak Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is US 12 over Oak Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2022.

How much traffic does US 12 over Oak Creek carry?

About 2,475 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is US 12 over Oak Creek?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m).

Who owns US 12 over Oak Creek?

It is owned by the State Highway Agency.