US Bridges

29 NE over Wilson Creek

Good

Grant County, Washington · 29 NE 4.02 East of R NE · Structure no. 086394000000000

Built
1998
27 years old
Condition
Good
inspected February 2024
Type
Tee Beam
Prestressed Concrete
Length
65 ft
2 main spans
Daily traffic
24
2020 count
Owner
County
County Highway Agency

About this bridge

29 NE over Wilson Creek is a prestressed concrete tee beam carrying 29 NE over Wilson Creek in Grant County, Washington. It was built in 1998, so it is 27 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 24 vehicles a day, roughly 10% of them trucks, projected to reach 46 by 2042. The structure is 65 ft (19.8 m) long and 30 ft wide. If it were closed, the detour would be 23 mi (37 km).

Carries29 NE
CrossesWilson Creek
Location29 NE 4.02 East of R NE
RouteCounty Highway 52500
Coordinates47.50936, -119.01785
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 protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating27.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span64 ft (19.5 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2020)
Projected traffic46 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$741,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 29 NE over Wilson Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is 29 NE over Wilson Creek 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 February 2024.

How much traffic does 29 NE over Wilson Creek carry?

About 24 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is 29 NE over Wilson Creek?

The structure is 65 ft (19.8 m) long with a longest span of 64 ft (19.5 m) and a deck 30 ft wide.

Who owns 29 NE over Wilson Creek?

It is owned by the County Highway Agency.