US Bridges

County Arterial over Potholes East Canal

Fair

Franklin County, Washington · 0.63W JCT R 901 · Structure no. 079910000000000

Built
1958
67 years old
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
36 ft
2 main spans
Daily traffic
245
2022 count
Owner
County
County Highway Agency

About this bridge

County Arterial over Potholes East Canal is a wood or timber stringer/multi-beam or girder carrying County Arterial over Potholes East Canal in Franklin County, Washington. It was built in 1958, so it is 67 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 245 vehicles a day, roughly 20% of them trucks, projected to reach 550 by 2042. The structure is 36 ft (11 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCounty Arterial
CrossesPotholes East Canal
Location0.63W JCT R 901
RouteCounty Highway 6700
CountyFranklin County
StateWashington
Coordinates46.54783, -119.14564
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
Deck7 GoodSome minor problems.
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; action required to protect exposed foundations
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 rating25.4 US tons
Inventory rating19 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 15
Structure length36 ft (11 m)
Longest span18 ft (5.5 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic245 (2022)
Projected traffic550 by 2042
Trucks20%
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$1.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Arterial over Potholes East Canal built?

It was built in 1958, making it 67 years old in 2025.

What condition is County Arterial 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 Arterial over Potholes East Canal carry?

About 245 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is County Arterial over Potholes East Canal?

The structure is 36 ft (11 m) long with a longest span of 18 ft (5.5 m) and a deck 25 ft wide.

Who owns County Arterial over Potholes East Canal?

It is owned by the County Highway Agency.