US Bridges

Lateral a Rd. over Wapato Canal

Good

Yakima County, Washington · 0.07 S. of Ragan Rd. · Structure no. 086511000000000

Built
1999
26 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
87 ft
1 main span
Daily traffic
6,299
2023 count
Owner
County
County Highway Agency

About this bridge

Lateral a Rd. over Wapato Canal is a prestressed concrete stringer/multi-beam or girder carrying Lateral a Rd. over Wapato Canal in Yakima County, Washington. It was built in 1999, so it is 26 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,299 vehicles a day, roughly 5% of them trucks, projected to reach 6,929 by 2043. The structure is 87 ft (26.5 m) long and 42 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesLateral a Rd.
CrossesWapato Canal
Location0.07 S. of Ragan Rd.
RouteCounty Highway 50380
CountyYakima County
StateWashington
Coordinates46.50541, -120.48002
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
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 evaluation7: Better than present minimum criteria
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 rating44 US tons
Inventory rating31.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length87 ft (26.5 m)
Longest span86 ft (26.2 m)
Deck width42 ft (12.7 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,299 (2023)
Projected traffic6,929 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$3.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lateral a Rd. over Wapato Canal built?

It was built in 1999, making it 26 years old in 2025.

What condition is Lateral a Rd. over Wapato 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 January 2023.

How much traffic does Lateral a Rd. over Wapato Canal carry?

About 6,299 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Lateral a Rd. over Wapato Canal?

The structure is 87 ft (26.5 m) long with a longest span of 86 ft (26.2 m) and a deck 42 ft wide.

Who owns Lateral a Rd. over Wapato Canal?

It is owned by the County Highway Agency.