US Bridges

US 101 over Carruthers Sl

Good

Pacific County, Washington · 21.4 N JCT SR 4 · Structure no. 0009868B0000000

Built
1975
50 years old
Condition
Good
inspected May 2021
Type
Slab
Prestressed Concrete Continuous
Length
67 ft
3 main spans
Daily traffic
3,501
2023 count
Owner
State
State Highway Agency

About this bridge

US 101 over Carruthers Sl is a prestressed concrete continuous slab carrying US 101 over Carruthers Sl in Pacific County, Washington. It was built in 1975, so it is 50 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 3,501 vehicles a day, roughly 11% of them trucks, projected to reach 4,065 by 2039. The structure is 67 ft (20.4 m) long and 43 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesUS 101
CrossesCarruthers Sl
Location21.4 N JCT SR 4
RouteU.S. Route 101
Coordinates46.69304, -123.85945
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 protection8 Very GoodNo problems noted.
Last inspectionMay 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length67 ft (20.4 m)
Longest span25 ft (7.6 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,501 (2023)
Projected traffic4,065 by 2039
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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$1.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was US 101 over Carruthers Sl built?

It was built in 1975, making it 50 years old in 2025.

What condition is US 101 over Carruthers Sl 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 May 2021.

How much traffic does US 101 over Carruthers Sl carry?

About 3,501 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US 101 over Carruthers Sl?

The structure is 67 ft (20.4 m) long with a longest span of 25 ft (7.6 m) and a deck 43 ft wide.

Who owns US 101 over Carruthers Sl?

It is owned by the State Highway Agency.