US Bridges

Wahatis Peak Road over Wahluke Branch Canal

Good

Grant County, Washington · Nr Mattawa Wa · Structure no. 11PEC0038

Built
1967
58 years old
Condition
Good
inspected February 2023
Type
Slab
Prestressed Concrete
Length
100 ft
2 main spans
Daily traffic
3
2023 count
Owner
Federal
Bureau of Reclamation

About this bridge

Wahatis Peak Road over Wahluke Branch Canal is a prestressed concrete slab carrying Wahatis Peak Road over Wahluke Branch Canal in Grant County, Washington. It was built in 1967, so it is 58 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 3 vehicles a day, projected to reach 3 by 2043. The structure is 100 ft (30.6 m) long and 28 ft wide.

Location

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CarriesWahatis Peak Road
CrossesWahluke Branch Canal
LocationNr Mattawa Wa
CountyGrant County
StateWashington
Coordinates46.76591, -119.47289
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.7 US tons
Inventory rating53.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadH 20
Structure length100 ft (30.6 m)
Longest span49 ft (14.9 m)
Deck width28 ft (8.6 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3 (2023)
Projected traffic3 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Reclamation
Maintained byOther Local Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wahatis Peak Road over Wahluke Branch Canal built?

It was built in 1967, making it 58 years old in 2025.

What condition is Wahatis Peak Road over Wahluke Branch Canal 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 2023.

How much traffic does Wahatis Peak Road over Wahluke Branch Canal carry?

About 3 vehicles per day (2023 count).

How long is Wahatis Peak Road over Wahluke Branch Canal?

The structure is 100 ft (30.6 m) long with a longest span of 49 ft (14.9 m) and a deck 28 ft wide.

Who owns Wahatis Peak Road over Wahluke Branch Canal?

It is owned by the Bureau of Reclamation and maintained by the Other Local Agency.