US Bridges

County Highway over Potholes East Canal

GoodPosted for load

Franklin County, Washington · 1.02S JCT R 506 · Structure no. 080231000000000

Built
1954
71 years old, rebuilt 1976
Condition
Good
inspected November 2022
Type
Tee Beam
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
2,181
2021 count
Owner
County
County Highway Agency

About this bridge

County Highway over Potholes East Canal is a prestressed concrete tee beam carrying County Highway over Potholes East Canal in Franklin County, Washington. It was built in 1954 and reconstructed in 1976, so it is 71 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 2,181 vehicles a day, roughly 21% of them trucks, projected to reach 2,595 by 2042. The structure is 30 ft (9.1 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCounty Highway
CrossesPotholes East Canal
Location1.02S JCT R 506
RouteCounty Highway 9030
Coordinates46.476, -119.19525
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 protection7 GoodSome minor problems.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25 US tons
Inventory rating15.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,181 (2021)
Projected traffic2,595 by 2042
Trucks21%
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$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Potholes East Canal built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1976.

What condition is County Highway over Potholes East 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 November 2022.

How much traffic does County Highway over Potholes East Canal carry?

About 2,181 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is County Highway over Potholes East Canal?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns County Highway over Potholes East Canal?

It is owned by the County Highway Agency.