US Bridges

Lateral B Rd. IRR over Canal

FairPosted for load

Yakima County, Washington · 00 51 S Fort Road · Structure no. 080619000000000

Built
1962
63 years old
Condition
Fair
inspected February 2023
Type
Channel Beam
Concrete
Length
32 ft
1 main span
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Lateral B Rd. IRR over Canal is a concrete channel beam carrying Lateral B Rd. IRR over Canal in Yakima County, Washington. It was built in 1962, so it is 63 years old, older 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. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 5% of them trucks, projected to reach 120 by 2043. The structure is 32 ft (9.8 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLateral B Rd. IRR
CrossesCanal
Location00 51 S Fort Road
RouteCounty Highway 50370
CountyYakima County
StateWashington
Coordinates46.36833, -120.50167
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating27.9 US tons
Inventory rating21.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans1
Design loadH 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic120 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$1.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lateral B Rd. IRR over Canal built?

It was built in 1962, making it 63 years old in 2025.

What condition is Lateral B Rd. IRR over 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 February 2023.

How much traffic does Lateral B Rd. IRR over Canal carry?

About 100 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Lateral B Rd. IRR over Canal?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 24 ft wide.

Who owns Lateral B Rd. IRR over Canal?

It is owned by the County Highway Agency.