US Bridges

US 12 over Vansycle Creek

Fair

Walla Walla County, Washington · 3.7 E JCT US 730 Spur · Structure no. 0010557A0000000

Built
1977
48 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
76 ft
1 main span
Daily traffic
8,169
2023 count
Owner
State
State Highway Agency

About this bridge

US 12 over Vansycle Creek is a prestressed concrete stringer/multi-beam or girder carrying US 12 over Vansycle Creek in Walla Walla County, Washington. It was built in 1977, so it is 48 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 8,169 vehicles a day, roughly 14% of them trucks, projected to reach 8,981 by 2039. The structure is 76 ft (23.2 m) long and 43 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

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CarriesUS 12
CrossesVansycle Creek
Location3.7 E JCT US 730 Spur
RouteU.S. Route 12
CountyWalla Walla County
StateWashington
Coordinates46.06591, -118.83607
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.3 US tons
Inventory rating22.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length76 ft (23.2 m)
Longest span71 ft (21.6 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,169 (2023)
Projected traffic8,981 by 2039
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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$1.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 12 over Vansycle Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is US 12 over Vansycle 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 May 2023.

How much traffic does US 12 over Vansycle Creek carry?

About 8,169 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is US 12 over Vansycle Creek?

The structure is 76 ft (23.2 m) long with a longest span of 71 ft (21.6 m) and a deck 43 ft wide.

Who owns US 12 over Vansycle Creek?

It is owned by the State Highway Agency.