US Bridges

County Highway over Potholes East Canal

Fair

Franklin County, Washington · 3.69S JCT R 608 · Structure no. 081341000000000

Built
1954
71 years old, rebuilt 1972
Condition
Fair
inspected November 2022
Type
Tee Beam
Prestressed Concrete
Length
97 ft
4 main spans
Daily traffic
2,148
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 1972, 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 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 2,148 vehicles a day, roughly 31% of them trucks, projected to reach 3,100 by 242. The structure is 97 ft (29.6 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesCounty Highway
CrossesPotholes East Canal
Location3.69S JCT R 608
RouteCounty Highway 9010
CountyFranklin County
StateWashington
Coordinates46.53784, -119.13217
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2022
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 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 rating35.7 US tons
Inventory rating21.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length97 ft (29.6 m)
Longest span29 ft (8.8 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,148 (2021)
Projected traffic3,100 by 242
Trucks31%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 County Highway over Potholes East Canal built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1972.

What condition is County Highway over Potholes East 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 November 2022.

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

About 2,148 vehicles per day (2021 count), of which roughly 31% are trucks.

How long is County Highway over Potholes East Canal?

The structure is 97 ft (29.6 m) long with a longest span of 29 ft (8.8 m) and a deck 31 ft wide.

Who owns County Highway over Potholes East Canal?

It is owned by the County Highway Agency.