US Bridges

US 12 over Dry Creek

Good

Walla Walla County, Washington · 9.2 E JCT SR 125 Spur · Structure no. 0016568A0000000

Built
2003
22 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
84 ft
1 main span
Daily traffic
4,564
2023 count
Owner
State
State Highway Agency

About this bridge

US 12 over Dry Creek is a prestressed concrete stringer/multi-beam or girder carrying US 12 over Dry Creek in Walla Walla County, Washington. It was built in 2003, so it is 22 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 4,564 vehicles a day, roughly 13% of them trucks, projected to reach 5,480 by 2039. The structure is 84 ft (25.6 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS 12
CrossesDry Creek
Location9.2 E JCT SR 125 Spur
RouteU.S. Route 12
Coordinates46.12159, -118.20776
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating99 US tons
Inventory rating61 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length84 ft (25.6 m)
Longest span79 ft (24.1 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,564 (2023)
Projected traffic5,480 by 2039
Trucks13%
Lanes on structure2
Traffic directionTwo-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$1.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 12 over Dry Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is US 12 over Dry 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 March 2024.

How much traffic does US 12 over Dry Creek carry?

About 4,564 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is US 12 over Dry Creek?

The structure is 84 ft (25.6 m) long with a longest span of 79 ft (24.1 m) and a deck 43 ft wide.

Who owns US 12 over Dry Creek?

It is owned by the State Highway Agency.