US Bridges

Williams Road over Corbett Creek

Good

Lincoln County, Washington · 3.44 SE FAS N221 · Structure no. 081486000000000

Built
1920
105 years old, rebuilt 1988
Condition
Good
inspected January 2024
Type
Tee Beam
Concrete
Length
65 ft
1 main span
Daily traffic
18
2022 count
Owner
County
County Highway Agency

About this bridge

Williams Road over Corbett Creek is a concrete tee beam carrying Williams Road over Corbett Creek in Lincoln County, Washington. It was built in 1920 and reconstructed in 1988, so it is 105 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 18 vehicles a day, roughly 11% of them trucks, projected to reach 19 by 2044. The structure is 65 ft (19.8 m) long and 30 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesWilliams Road
CrossesCorbett Creek
Location3.44 SE FAS N221
RouteCounty Highway 40720
Coordinates47.77189, -118.86408
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating28.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length65 ft (19.8 m)
Longest span62 ft (18.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18 (2022)
Projected traffic19 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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$2.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Williams Road over Corbett Creek built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1988.

What condition is Williams Road over Corbett 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 Williams Road over Corbett Creek carry?

About 18 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Williams Road over Corbett Creek?

The structure is 65 ft (19.8 m) long with a longest span of 62 ft (18.9 m) and a deck 30 ft wide.

Who owns Williams Road over Corbett Creek?

It is owned by the County Highway Agency.