US Bridges

B Road NW over West Canal Blk 701

Fair

Grant County, Washington · B NW .2 N of 18 NW · Structure no. 084756000000000

Built
1975
50 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
180 ft
2 main spans
Daily traffic
714
2020 count
Owner
County
County Highway Agency

About this bridge

B Road NW over West Canal Blk 701 is a prestressed concrete tee beam carrying B Road NW over West Canal Blk 701 in Grant County, Washington. It was built in 1975, so it is 50 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 714 vehicles a day, roughly 19% of them trucks, projected to reach 1,200 by 2042. The structure is 180 ft (54.9 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesB Road NW
CrossesWest Canal Blk 701
LocationB NW .2 N of 18 NW
RouteCounty Highway 93045
CountyGrant County
StateWashington
Coordinates47.35863, -119.53333
Functional classRural Major 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating23.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20 + Mod
Structure length180 ft (54.9 m)
Longest span88 ft (26.8 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic714 (2020)
Projected traffic1,200 by 2042
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 B Road NW over West Canal Blk 701 built?

It was built in 1975, making it 50 years old in 2025.

What condition is B Road NW over West Canal Blk 701 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 B Road NW over West Canal Blk 701 carry?

About 714 vehicles per day (2020 count), of which roughly 19% are trucks.

How long is B Road NW over West Canal Blk 701?

The structure is 180 ft (54.9 m) long with a longest span of 88 ft (26.8 m) and a deck 34 ft wide.

Who owns B Road NW over West Canal Blk 701?

It is owned by the County Highway Agency.