US Bridges

Center Road over Chimacum Creek

FairPosted for load

Jefferson County, Washington · 3.45 JCT FAS9517 · Structure no. 084649000000000

Built
1955
70 years old, rebuilt 1980
Condition
Fair
inspected April 2023
Type
Channel Beam
Concrete
Length
25 ft
1 main span
Daily traffic
4,080
2021 count
Owner
County
County Highway Agency

About this bridge

Center Road over Chimacum Creek is a concrete channel beam carrying Center Road over Chimacum Creek in Jefferson County, Washington. It was built in 1955 and reconstructed in 1980, 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 4,080 vehicles a day, roughly 6% of them trucks, projected to reach 4,735 by 2042. The structure is 25 ft (7.6 m) long and 46 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesCenter Road
CrossesChimacum Creek
Location3.45 JCT FAS9517
RouteCounty Highway 93150
CountyJefferson County
StateWashington
Coordinates47.96333, -122.78056
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 protection8 Very GoodNo problems noted.
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15 US tons
Inventory rating11.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans1
Design loadH 20
Structure length25 ft (7.6 m)
Longest span22 ft (6.7 m)
Deck width46 ft (13.9 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,080 (2021)
Projected traffic4,735 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Center Road over Chimacum Creek built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1980.

What condition is Center Road over Chimacum Creek 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 Chimacum Creek carry?

About 4,080 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Center Road over Chimacum Creek?

The structure is 25 ft (7.6 m) long with a longest span of 22 ft (6.7 m) and a deck 46 ft wide.

Who owns Center Road over Chimacum Creek?

It is owned by the County Highway Agency.