US Bridges

US 12 over Lake CR

Good

Lewis County, Washington · 0.3 E JCT SR 7 · Structure no. 0004087A0000000

Built
1952
73 years old
Condition
Good
inspected August 2022
Type
Tee Beam
Concrete Continuous
Length
84 ft
3 main spans
Daily traffic
5,037
2023 count
Owner
State
State Highway Agency

About this bridge

US 12 over Lake CR is a concrete continuous tee beam carrying US 12 over Lake CR in Lewis County, Washington. It was built in 1952, so it is 73 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 5,037 vehicles a day, roughly 21% of them trucks, projected to reach 6,054 by 2039. The structure is 84 ft (25.6 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 12
CrossesLake CR
Location0.3 E JCT SR 7
RouteU.S. Route 12
CountyLewis County
StateWashington
Coordinates46.55015, -122.27049
Functional classRural Principal Arterial - Other

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 inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating38 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length84 ft (25.6 m)
Longest span32 ft (9.8 m)
Deck width40 ft (12.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,037 (2023)
Projected traffic6,054 by 2039
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 12 over Lake CR built?

It was built in 1952, making it 73 years old in 2025.

What condition is US 12 over Lake CR 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 August 2022.

How much traffic does US 12 over Lake CR carry?

About 5,037 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is US 12 over Lake CR?

The structure is 84 ft (25.6 m) long with a longest span of 32 ft (9.8 m) and a deck 40 ft wide.

Who owns US 12 over Lake CR?

It is owned by the State Highway Agency.