US Bridges

Merion Road over Potholes East Canal

GoodPosted for load

Franklin County, Washington · 1.28NJCT R 325 · Structure no. 080925000000000

Built
1952
73 years old
Condition
Good
inspected November 2022
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
86 ft
3 main spans
Daily traffic
52
2022 count
Owner
County
County Highway Agency

About this bridge

Merion Road over Potholes East Canal is a wood or timber stringer/multi-beam or girder carrying Merion Road over Potholes East Canal in Franklin County, Washington. It was built in 1952, so it is 73 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 7 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 52 vehicles a day, roughly 44% of them trucks, projected to reach 120 by 2042. The structure is 86 ft (26.2 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesMerion Road
CrossesPotholes East Canal
Location1.28NJCT R 325
RouteCounty Highway 3300
Coordinates46.62065, -119.05076
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating27.1 US tons
Inventory rating16.4 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 15
Structure length86 ft (26.2 m)
Longest span30 ft (9.1 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52 (2022)
Projected traffic120 by 2042
Trucks44%
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$3.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Merion Road over Potholes East Canal built?

It was built in 1952, making it 73 years old in 2025.

What condition is Merion Road 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 Merion Road over Potholes East Canal carry?

About 52 vehicles per day (2022 count), of which roughly 44% are trucks.

How long is Merion Road over Potholes East Canal?

The structure is 86 ft (26.2 m) long with a longest span of 30 ft (9.1 m) and a deck 25 ft wide.

Who owns Merion Road over Potholes East Canal?

It is owned by the County Highway Agency.