US Bridges

Skokomish Valleyrd over Vance Creek

Good

Mason County, Washington · 3.88 W JCT SR 101 · Structure no. 082397000000000

Built
1963
62 years old
Condition
Good
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
103 ft
3 main spans
Daily traffic
494
2020 count
Owner
County
County Highway Agency

About this bridge

Skokomish Valleyrd over Vance Creek is a concrete continuous tee beam carrying Skokomish Valleyrd over Vance Creek in Mason County, Washington. It was built in 1963, so it is 62 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 494 vehicles a day, roughly 10% of them trucks, projected to reach 934 by 2040. The structure is 103 ft (31.4 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesSkokomish Valleyrd
CrossesVance Creek
Location3.88 W JCT SR 101
RouteCounty Highway 41640
Coordinates47.31333, -123.24167
Functional classRural Minor Collector

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 protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27 US tons
Inventory rating19 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length103 ft (31.4 m)
Longest span60 ft (18.3 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic494 (2020)
Projected traffic934 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$220,000 (2030 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Skokomish Valleyrd over Vance Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is Skokomish Valleyrd over Vance 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 June 2024.

How much traffic does Skokomish Valleyrd over Vance Creek carry?

About 494 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Skokomish Valleyrd over Vance Creek?

The structure is 103 ft (31.4 m) long with a longest span of 60 ft (18.3 m) and a deck 28 ft wide.

Who owns Skokomish Valleyrd over Vance Creek?

It is owned by the County Highway Agency.