US Bridges

Coffeepot Road over Lake Creek

Good

Lincoln County, Washington · 12.97 N SR 21 · Structure no. 081027000000000

Built
1930
95 years old, rebuilt 1981
Condition
Good
inspected February 2024
Type
Tee Beam
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
69
2022 count
Owner
County
County Highway Agency

About this bridge

Coffeepot Road over Lake Creek is a prestressed concrete tee beam carrying Coffeepot Road over Lake Creek in Lincoln County, Washington. It was built in 1930 and reconstructed in 1981, so it is 95 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.

It carries about 69 vehicles a day, roughly 40% of them trucks, projected to reach 210 by 2042. The structure is 72 ft (21.9 m) long and 32 ft wide.

CarriesCoffeepot Road
CrossesLake Creek
Location12.97 N SR 21
RouteCounty Highway 92400
Coordinates47.50822, -118.54264
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
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 rating47.5 US tons
Inventory rating28.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length72 ft (21.9 m)
Longest span69 ft (21 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69 (2022)
Projected traffic210 by 2042
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Coffeepot Road over Lake Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1981.

What condition is Coffeepot Road over Lake 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 Coffeepot Road over Lake Creek carry?

About 69 vehicles per day (2022 count), of which roughly 40% are trucks.

How long is Coffeepot Road over Lake Creek?

The structure is 72 ft (21.9 m) long with a longest span of 69 ft (21 m) and a deck 32 ft wide.

Who owns Coffeepot Road over Lake Creek?

It is owned by the County Highway Agency.