US Bridges

3 RD NW over West Canal

Good

Grant County, Washington · 3 NW 1 West of SR 281 · Structure no. 086738000000000

Built
2002
23 years old
Condition
Good
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
107 ft
1 main span
Daily traffic
96
2021 count
Owner
County
County Highway Agency

About this bridge

3 RD NW over West Canal is a prestressed concrete tee beam carrying 3 RD NW over West Canal in Grant County, Washington. It was built in 2002, so it is 23 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 96 vehicles a day, roughly 26% of them trucks, projected to reach 150 by 2043. The structure is 107 ft (32.6 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Carries3 RD NW
CrossesWest Canal
Location3 NW 1 West of SR 281
RouteCounty Highway 31200
Coordinates47.13218, -119.87483
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.2 US tons
Inventory rating45 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span106 ft (32.3 m)
Deck width29 ft (8.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2021)
Projected traffic150 by 2043
Trucks26%
Lanes on structure2
Traffic directionTwo-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$4.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 3 RD NW over West Canal built?

It was built in 2002, making it 23 years old in 2025.

What condition is 3 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 2023.

How much traffic does 3 RD NW over West Canal carry?

About 96 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is 3 RD NW over West Canal?

The structure is 107 ft (32.6 m) long with a longest span of 106 ft (32.3 m) and a deck 29 ft wide.

Who owns 3 RD NW over West Canal?

It is owned by the County Highway Agency.