US Bridges

G RD NW over West Canal

GoodPosted for load

Grant County, Washington · G NW 0.2 N of SR 28 · Structure no. 079646000000000

Built
1977
48 years old
Condition
Good
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
101 ft
1 main span
Daily traffic
50
2021 count
Owner
County
County Highway Agency

About this bridge

G RD NW over West Canal is a prestressed concrete tee beam carrying G RD NW over West Canal in Grant County, Washington. It was built in 1977, so it is 48 years old, younger 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 50 vehicles a day, roughly 15% of them trucks, projected to reach 65 by 2043. The structure is 101 ft (30.8 m) long and 12 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesG RD NW
CrossesWest Canal
LocationG NW 0.2 N of SR 28
RouteCounty Highway 37410
Coordinates47.2519, -119.63981
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 2024
Inspection intervalevery 12 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating20.7 US tons
Inventory rating16.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 15
Structure length101 ft (30.8 m)
Longest span101 ft (30.8 m)
Deck width12 ft (3.7 m)
Roadway width11 ft (3.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2021)
Projected traffic65 by 2043
Trucks15%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$2.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was G RD NW over West Canal built?

It was built in 1977, making it 48 years old in 2025.

What condition is G RD NW over West 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 2024.

How much traffic does G RD NW over West Canal carry?

About 50 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is G RD NW over West Canal?

The structure is 101 ft (30.8 m) long with a longest span of 101 ft (30.8 m) and a deck 12 ft wide.

Who owns G RD NW over West Canal?

It is owned by the County Highway Agency.