US Bridges

Fort Rd. over Usis Canal

Fair

Yakima County, Washington · 0.50 W Harrah Rd. · Structure no. 086571000000000

Built
2001
24 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
3,020
2019 count
Owner
County
County Highway Agency

About this bridge

Fort Rd. over Usis Canal is a prestressed concrete stringer/multi-beam or girder carrying Fort 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 3,020 vehicles a day, roughly 14% of them trucks, projected to reach 3,624 by 2039. The structure is 55 ft (16.8 m) long and 42 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFort Rd.
CrossesUsis Canal
Location0.50 W Harrah Rd.
RouteCounty Highway 50000
Coordinates46.375, -120.555
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating33.2 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length55 ft (16.8 m)
Longest span53 ft (16.2 m)
Deck width42 ft (12.8 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,020 (2019)
Projected traffic3,624 by 2039
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$2.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Fort Rd. over Usis Canal built?

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

What condition is Fort 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 March 2023.

How much traffic does Fort Rd. over Usis Canal carry?

About 3,020 vehicles per day (2019 count), of which roughly 14% are trucks.

How long is Fort Rd. over Usis Canal?

The structure is 55 ft (16.8 m) long with a longest span of 53 ft (16.2 m) and a deck 42 ft wide.

Who owns Fort Rd. over Usis Canal?

It is owned by the County Highway Agency.