US Bridges

Gravelle Road over Crab Creek

GoodPosted for load

Lincoln County, Washington · 4.58 S SR 231 · Structure no. 084617000000000

Built
1936
89 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
67
2021 count
Owner
County
County Highway Agency

About this bridge

Gravelle Road over Crab Creek is a steel stringer/multi-beam or girder carrying Gravelle Road over Crab Creek in Lincoln County, Washington. It was built in 1936, so it is 89 years old, older 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. Its operating status is: posted for load restriction.

It carries about 67 vehicles a day, roughly 40% of them trucks, projected to reach 87 by 2042. The structure is 26 ft (7.9 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesGravelle Road
CrossesCrab Creek
Location4.58 S SR 231
RouteCounty Highway 63370
Coordinates47.61681, -117.99403
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.2 US tons
Inventory rating17.2 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadH 10
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic67 (2021)
Projected traffic87 by 2042
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Gravelle Road over Crab Creek built?

It was built in 1936, making it 89 years old in 2025.

What condition is Gravelle Road over Crab 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 December 2023.

How much traffic does Gravelle Road over Crab Creek carry?

About 67 vehicles per day (2021 count), of which roughly 40% are trucks.

How long is Gravelle Road over Crab Creek?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 24 ft wide.

Who owns Gravelle Road over Crab Creek?

It is owned by the County Highway Agency.