US Bridges

20 Road NE over East Low Canal

FairPosted for load

Grant County, Washington · 20 NE @ East Low Canal · Structure no. 082576000000000

Built
1947
78 years old, rebuilt 1982
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
180 ft
6 main spans
Daily traffic
317
2020 count
Owner
County
County Highway Agency

About this bridge

20 Road NE over East Low Canal is a prestressed concrete stringer/multi-beam or girder carrying 20 Road NE over East Low Canal in Grant County, Washington. It was built in 1947 and reconstructed in 1982, so it is 78 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 5 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 317 vehicles a day, roughly 25% of them trucks, projected to reach 550 by 2042. The structure is 180 ft (54.9 m) long and 30 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

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Carries20 Road NE
CrossesEast Low Canal
Location20 NE @ East Low Canal
RouteCounty Highway 94046
CountyGrant County
StateWashington
Coordinates47.38214, -119.34931
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating27.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckOther
Main spans6
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span33 ft (10.1 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic317 (2020)
Projected traffic550 by 2042
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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$6.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 20 Road NE over East Low Canal built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1982.

What condition is 20 Road NE over East Low 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 2024.

How much traffic does 20 Road NE over East Low Canal carry?

About 317 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is 20 Road NE over East Low Canal?

The structure is 180 ft (54.9 m) long with a longest span of 33 ft (10.1 m) and a deck 30 ft wide.

Who owns 20 Road NE over East Low Canal?

It is owned by the County Highway Agency.