US Bridges

US 12 over Wapatox Canal Overflow

Good

Yakima County, Washington · 0.4 E JCT SR 410 · Structure no. 002000320000000

Built
1981
44 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
4,703
2023 count
Owner
State
State Highway Agency

About this bridge

US 12 over Wapatox Canal Overflow is a concrete continuous culvert carrying US 12 over Wapatox Canal Overflow in Yakima County, Washington. It was built in 1981, so it is 44 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 4,703 vehicles a day, roughly 11% of them trucks, projected to reach 5,907 by 2039. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesUS 12
CrossesWapatox Canal Overflow
Location0.4 E JCT SR 410
RouteU.S. Route 12
Coordinates46.74836, -120.77747
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 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 rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,703 (2023)
Projected traffic5,907 by 2039
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$388,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 12 over Wapatox Canal Overflow built?

It was built in 1981, making it 44 years old in 2025.

What condition is US 12 over Wapatox Canal Overflow 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 February 2024.

How much traffic does US 12 over Wapatox Canal Overflow carry?

About 4,703 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US 12 over Wapatox Canal Overflow?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).

Who owns US 12 over Wapatox Canal Overflow?

It is owned by the State Highway Agency.