US Bridges

Lateral 1 Rd. over Usis Canal

Fair

Yakima County, Washington · 0.12 Before Riggs Rd. · Structure no. 086567000000000

Built
2001
24 years old
Condition
Fair
inspected January 2023
Type
Slab
Concrete Continuous
Length
98 ft
2 main spans
Daily traffic
566
2023 count
Owner
County
County Highway Agency

About this bridge

Lateral 1 Rd. over Usis Canal is a concrete continuous slab carrying Lateral 1 Rd. over Usis Canal in Yakima County, Washington. It was built in 2001, so it is 24 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 566 vehicles a day, roughly 5% of them trucks, projected to reach 630 by 2043. The structure is 98 ft (29.9 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesLateral 1 Rd.
CrossesUsis Canal
Location0.12 Before Riggs Rd.
RouteCounty Highway 51720
CountyYakima County
StateWashington
Coordinates46.47746, -120.53162
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.3 US tons
Inventory rating23.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length98 ft (29.9 m)
Longest span47 ft (14.3 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic566 (2023)
Projected traffic630 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lateral 1 Rd. over Usis Canal built?

It was built in 2001, making it 24 years old in 2025.

What condition is Lateral 1 Rd. over Usis Canal 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 January 2023.

How much traffic does Lateral 1 Rd. over Usis Canal carry?

About 566 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Lateral 1 Rd. over Usis Canal?

The structure is 98 ft (29.9 m) long with a longest span of 47 ft (14.3 m) and a deck 32 ft wide.

Who owns Lateral 1 Rd. over Usis Canal?

It is owned by the County Highway Agency.