US Bridges

Cook Road over Lake Creek

Good

Lewis County, Washington · 2.0 SE Curtis · Structure no. 086099000000000

Built
1994
31 years old
Condition
Good
inspected December 2022
Type
Channel Beam
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
25
2022 count
Owner
County
County Highway Agency

About this bridge

Cook Road over Lake Creek is a prestressed concrete channel beam carrying Cook Road over Lake Creek in Lewis County, Washington. It was built in 1994, so it is 31 years old, younger 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 25 vehicles a day, roughly 12% of them trucks, projected to reach 44 by 2042. The structure is 55 ft (16.8 m) long and 19 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCook Road
CrossesLake Creek
Location2.0 SE Curtis
RouteCounty Highway 25705
Coordinates46.562, -123.09177
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating91.9 US tons
Inventory rating41 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span53 ft (16.2 m)
Deck width19 ft (5.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2022)
Projected traffic44 by 2042
Trucks12%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$575,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cook Road over Lake Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is Cook 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 December 2022.

How much traffic does Cook Road over Lake Creek carry?

About 25 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Cook Road over Lake Creek?

The structure is 55 ft (16.8 m) long with a longest span of 53 ft (16.2 m) and a deck 19 ft wide.

Who owns Cook Road over Lake Creek?

It is owned by the County Highway Agency.