US Bridges

County Highway over Potholes East Canal

FairPosted for load

Franklin County, Washington · 0.11 E JCT 903 · Structure no. 083813000000000

Built
1954
71 years old, rebuilt 1973
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
943
2022 count
Owner
County
County Highway Agency

About this bridge

County Highway over Potholes East Canal is a prestressed concrete stringer/multi-beam or girder carrying County Highway over Potholes East Canal in Franklin County, Washington. It was built in 1954 and reconstructed in 1973, 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. Its operating status is: posted for load restriction.

It carries about 943 vehicles a day, roughly 27% of them trucks, projected to reach 1,530 by 2042. The structure is 34 ft (10.4 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCounty Highway
CrossesPotholes East Canal
Location0.11 E JCT 903
RouteCounty Highway 5060
CountyFranklin County
StateWashington
Coordinates46.49074, -119.19293
Functional classRural Minor 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 statusPosted for load restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.2 US tons
Inventory rating12.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span34 ft (10.4 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic943 (2022)
Projected traffic1,530 by 2042
Trucks27%
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$1.6 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 1973.

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 943 vehicles per day (2022 count), of which roughly 27% are trucks.

How long is County Highway over Potholes East Canal?

The structure is 34 ft (10.4 m) long with a longest span of 34 ft (10.4 m) and a deck 32 ft wide.

Who owns County Highway over Potholes East Canal?

It is owned by the County Highway Agency.