US Bridges

Wood Road over Coulee Creek

Fair

Spokane County, Washington · 0.9 S Coulee-Hite · Structure no. 083158000000000

Built
1971
54 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
491
2019 count
Owner
County
County Highway Agency

About this bridge

Wood Road over Coulee Creek is a prestressed concrete tee beam carrying Wood Road over Coulee Creek in Spokane County, Washington. It was built in 1971, so it is 54 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 491 vehicles a day, roughly 17% of them trucks, projected to reach 707 by 2041. The structure is 30 ft (9.1 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesWood Road
CrossesCoulee Creek
Location0.9 S Coulee-Hite
RouteCounty Highway 5318
CountySpokane County
StateWashington
Coordinates47.73387, -117.72933
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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 alignment6: Equal to present minimum criteria
Operating rating26.8 US tons
Inventory rating20.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span29 ft (8.7 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic491 (2019)
Projected traffic707 by 2041
Trucks17%
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 Wood Road over Coulee Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Wood Road over Coulee Creek 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 May 2023.

How much traffic does Wood Road over Coulee Creek carry?

About 491 vehicles per day (2019 count), of which roughly 17% are trucks.

How long is Wood Road over Coulee Creek?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.7 m) and a deck 28 ft wide.

Who owns Wood Road over Coulee Creek?

It is owned by the County Highway Agency.