US Bridges

US 12 over Klickitat Creek

Good

Lewis County, Washington · 4.0 E JCT SR 122 · Structure no. 0002329A0000000

Built
1937
88 years old, rebuilt 1969
Condition
Good
inspected April 2024
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
6,548
2023 count
Owner
State
State Highway Agency

About this bridge

US 12 over Klickitat Creek is a concrete culvert carrying US 12 over Klickitat Creek in Lewis County, Washington. It was built in 1937 and reconstructed in 1969, so it is 88 years old, older 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 6,548 vehicles a day, roughly 22% of them trucks, projected to reach 8,323 by 2039. The structure is 23 ft (7 m) long and 88 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesUS 12
CrossesKlickitat Creek
Location4.0 E JCT SR 122
RouteU.S. Route 12
Coordinates46.53432, -122.53951
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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than 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 rating56 US tons
Inventory rating33 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width88 ft (26.9 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,548 (2023)
Projected traffic8,323 by 2039
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$461,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 12 over Klickitat Creek built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1969.

What condition is US 12 over Klickitat 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 April 2024.

How much traffic does US 12 over Klickitat Creek carry?

About 6,548 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is US 12 over Klickitat Creek?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 88 ft wide.

Who owns US 12 over Klickitat Creek?

It is owned by the State Highway Agency.