US Bridges

Naches Rd. S. over Yakima Valley Canal

Good

Yakima County, Washington · 00.35 N Schuler Gr · Structure no. 080477000000000

Built
1925
100 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
1,760
2021 count
Owner
County
County Highway Agency

About this bridge

Naches Rd. S. over Yakima Valley Canal is a concrete slab carrying Naches Rd. S. over Yakima Valley Canal in Yakima County, Washington. It was built in 1925, so it is 100 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 1,760 vehicles a day, roughly 5% of them trucks, projected to reach 2,112 by 2041. The structure is 28 ft (8.5 m) long and 25 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesNaches Rd. S.
CrossesYakima Valley Canal
Location00.35 N Schuler Gr
RouteCounty Highway 20150
Coordinates46.64584, -120.62536
Functional classRural Major Collector

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 protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23 US tons
Inventory rating14 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,760 (2021)
Projected traffic2,112 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Naches Rd. S. over Yakima Valley Canal built?

It was built in 1925, making it 100 years old in 2025.

What condition is Naches Rd. S. over Yakima Valley 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 March 2023.

How much traffic does Naches Rd. S. over Yakima Valley Canal carry?

About 1,760 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Naches Rd. S. over Yakima Valley Canal?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m) and a deck 25 ft wide.

Who owns Naches Rd. S. over Yakima Valley Canal?

It is owned by the County Highway Agency.