US Bridges

SR 26 over Potholes East Canal

Fair

Adams County, Washington · 8.8 E Grant CO · Structure no. 0004882A0000000

Built
1955
70 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete Continuous
Length
160 ft
7 main spans
Daily traffic
7,360
2023 count
Owner
State
State Highway Agency

About this bridge

SR 26 over Potholes East Canal is a concrete continuous slab carrying SR 26 over Potholes East Canal in Adams County, Washington. It was built in 1955, so it is 70 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 7,360 vehicles a day, roughly 15% of them trucks, projected to reach 8,895 by 2039. The structure is 160 ft (48.9 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 26
CrossesPotholes East Canal
Location8.8 E Grant CO
RouteState Highway 26
CountyAdams County
StateWashington
Coordinates46.81144, -119.18953
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.4 US tons
Inventory rating27.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 15
Structure length160 ft (48.9 m)
Longest span21 ft (6.4 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,360 (2023)
Projected traffic8,895 by 2039
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 26 over Potholes East Canal built?

It was built in 1955, making it 70 years old in 2025.

What condition is SR 26 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 February 2023.

How much traffic does SR 26 over Potholes East Canal carry?

About 7,360 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is SR 26 over Potholes East Canal?

The structure is 160 ft (48.9 m) long with a longest span of 21 ft (6.4 m) and a deck 34 ft wide.

Who owns SR 26 over Potholes East Canal?

It is owned by the State Highway Agency.