US Bridges

US 12 over Touchet River

Good

Walla Walla County, Washington · 12.0 E JCT US · Structure no. 0019406D0000000

Built
2023
2 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
538 ft
3 main spans
Daily traffic
3,740
2023 count
Owner
State
State Highway Agency

About this bridge

US 12 over Touchet River is a prestressed concrete continuous stringer/multi-beam or girder carrying US 12 over Touchet River in Walla Walla County, Washington. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,740 vehicles a day, roughly 13% of them trucks, projected to reach 4,642 by 2039. The structure is 538 ft (164.1 m) long and 81 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesUS 12
CrossesTouchet River
Location12.0 E JCT US
RouteU.S. Route 12
CountyWalla Walla County
StateWashington
Coordinates46.05444, -118.67108
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating47.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHL 93
Structure length538 ft (164.1 m)
Longest span181 ft (55.1 m)
Deck width81 ft (24.7 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,740 (2023)
Projected traffic4,642 by 2039
Trucks13%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$19.9 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 12 over Touchet River built?

It was built in 2023, making it 2 years old in 2025.

What condition is US 12 over Touchet River 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 July 2023.

How much traffic does US 12 over Touchet River carry?

About 3,740 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is US 12 over Touchet River?

The structure is 538 ft (164.1 m) long with a longest span of 181 ft (55.1 m) and a deck 81 ft wide.

Who owns US 12 over Touchet River?

It is owned by the State Highway Agency.