US Bridges

P NW over Canal W26A Blk 73

Good

Grant County, Washington · P NW .4 N of 11 NW · Structure no. 086172000000000

Built
1993
32 years old
Condition
Good
inspected December 2023
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
546
2018 count
Owner
County
County Highway Agency

About this bridge

P NW over Canal W26A Blk 73 is a prestressed concrete slab carrying P NW over Canal W26A Blk 73 in Grant County, Washington. It was built in 1993, so it is 32 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.

It carries about 546 vehicles a day, roughly 14% of them trucks, projected to reach 650 by 2040. The structure is 25 ft (7.6 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesP NW
CrossesCanal W26A Blk 73
LocationP NW .4 N of 11 NW
RouteCounty Highway 93035
Coordinates47.25391, -119.8321
Functional classRural Minor Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width34 ft (10.4 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic546 (2018)
Projected traffic650 by 2040
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was P NW over Canal W26A Blk 73 built?

It was built in 1993, making it 32 years old in 2025.

What condition is P NW over Canal W26A Blk 73 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 December 2023.

How much traffic does P NW over Canal W26A Blk 73 carry?

About 546 vehicles per day (2018 count), of which roughly 14% are trucks.

How long is P NW over Canal W26A Blk 73?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 34 ft wide.

Who owns P NW over Canal W26A Blk 73?

It is owned by the County Highway Agency.