US Bridges

Gravelle Road over Crab Creek

Good

Lincoln County, Washington · 3.47 W SR 231 · Structure no. 083265000000000

Built
1972
53 years old
Condition
Good
inspected January 2024
Type
Tee Beam
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
43
2022 count
Owner
County
County Highway Agency

About this bridge

Gravelle Road over Crab Creek is a prestressed concrete tee beam carrying Gravelle Road over Crab Creek in Lincoln County, Washington. It was built in 1972, so it is 53 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 43 vehicles a day, roughly 66% of them trucks, projected to reach 48 by 2044. The structure is 55 ft (16.8 m) long and 30 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesGravelle Road
CrossesCrab Creek
Location3.47 W SR 231
RouteCounty Highway 63370
Coordinates47.5635, -117.97256
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating29.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span52 ft (15.8 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43 (2022)
Projected traffic48 by 2044
Trucks66%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Gravelle Road over Crab Creek built?

It was built in 1972, making it 53 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 January 2024.

How much traffic does Gravelle Road over Crab Creek carry?

About 43 vehicles per day (2022 count), of which roughly 66% are trucks.

How long is Gravelle Road over Crab Creek?

The structure is 55 ft (16.8 m) long with a longest span of 52 ft (15.8 m) and a deck 30 ft wide.

Who owns Gravelle Road over Crab Creek?

It is owned by the County Highway Agency.