US Bridges

H Road NW over West Canal

FairPosted for load

Grant County, Washington · H NW 0.4 North of SR 28 · Structure no. 079900000000000

Built
1949
76 years old, rebuilt 1962
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
90 ft
3 main spans
Daily traffic
271
2020 count
Owner
County
County Highway Agency

About this bridge

H Road NW over West Canal is a wood or timber stringer/multi-beam or girder carrying H Road NW over West Canal in Grant County, Washington. It was built in 1949 and reconstructed in 1962, so it is 76 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 271 vehicles a day, roughly 25% of them trucks, projected to reach 400 by 2042. The structure is 90 ft (27.4 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesH Road NW
CrossesWest Canal
LocationH NW 0.4 North of SR 28
RouteCounty Highway 30430
CountyGrant County
StateWashington
Coordinates47.25346, -119.66113
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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 alignment6: Equal to present minimum criteria
Operating rating38 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 15
Structure length90 ft (27.4 m)
Longest span31 ft (9.4 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic271 (2020)
Projected traffic400 by 2042
Trucks25%
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$250,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was H Road NW over West Canal built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1962.

What condition is H Road NW over West 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 2023.

How much traffic does H Road NW over West Canal carry?

About 271 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is H Road NW over West Canal?

The structure is 90 ft (27.4 m) long with a longest span of 31 ft (9.4 m) and a deck 22 ft wide.

Who owns H Road NW over West Canal?

It is owned by the County Highway Agency.