US Bridges

Center Road over Little Quilcene River

FairPosted for load

Jefferson County, Washington · 0.4N JCT SR101 · Structure no. 081651000000000

Built
1955
70 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
64 ft
1 main span
Daily traffic
2,676
2021 count
Owner
County
County Highway Agency

About this bridge

Center Road over Little Quilcene River is a concrete stringer/multi-beam or girder carrying Center Road over Little Quilcene River in Jefferson County, Washington. It was built in 1955, so it is 70 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 2,676 vehicles a day, roughly 5% of them trucks, projected to reach 4,133 by 2042. The structure is 64 ft (19.5 m) long and 32 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

CarriesCenter Road
CrossesLittle Quilcene River
Location0.4N JCT SR101
RouteCounty Highway 93150
Coordinates47.83, -122.87472
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
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 rating18 US tons
Inventory rating10 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 20
Structure length64 ft (19.5 m)
Longest span44 ft (13.4 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,676 (2021)
Projected traffic4,133 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed19.3 mi (31 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$2.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Center Road over Little Quilcene River built?

It was built in 1955, making it 70 years old in 2025.

What condition is Center Road over Little Quilcene River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does Center Road over Little Quilcene River carry?

About 2,676 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Center Road over Little Quilcene River?

The structure is 64 ft (19.5 m) long with a longest span of 44 ft (13.4 m) and a deck 32 ft wide.

Who owns Center Road over Little Quilcene River?

It is owned by the County Highway Agency.