US Bridges

P Road NW over Lat W39.9E2 Blk 75

FairPosted for load

Grant County, Washington · P NW 0.4 S of 5 NW · Structure no. 081005000000000

Built
1952
73 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
30 ft
1 main span
Daily traffic
274
2021 count
Owner
County
County Highway Agency

About this bridge

P Road NW over Lat W39.9E2 Blk 75 is a wood or timber stringer/multi-beam or girder carrying P Road NW over Lat W39.9E2 Blk 75 in Grant County, Washington. It was built in 1952, so it is 73 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. Its operating status is: posted for load restriction.

It carries about 274 vehicles a day, roughly 29% of them trucks, projected to reach 650 by 2043. The structure is 30 ft (9.1 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesP Road NW
CrossesLat W39.9E2 Blk 75
LocationP NW 0.4 S of 5 NW
RouteCounty Highway 36250
CountyGrant County
StateWashington
Coordinates47.15029, -119.8325
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating23 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 15
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic274 (2021)
Projected traffic650 by 2043
Trucks29%
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$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was P Road NW over Lat W39.9E2 Blk 75 built?

It was built in 1952, making it 73 years old in 2025.

What condition is P Road NW over Lat W39.9E2 Blk 75 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 December 2024.

How much traffic does P Road NW over Lat W39.9E2 Blk 75 carry?

About 274 vehicles per day (2021 count), of which roughly 29% are trucks.

How long is P Road NW over Lat W39.9E2 Blk 75?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 25 ft wide.

Who owns P Road NW over Lat W39.9E2 Blk 75?

It is owned by the County Highway Agency.