US Bridges

Dowans Creek RD over Dowans Creek

Fair

Jefferson County, Washington · 0.5E JCT SR101 · Structure no. 079666000000000

Built
1974
51 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Prestressed Concrete
Length
81 ft
1 main span
Daily traffic
90
2021 count
Owner
County
County Highway Agency

About this bridge

Dowans Creek RD over Dowans Creek is a prestressed concrete tee beam carrying Dowans Creek RD over Dowans Creek in Jefferson County, Washington. It was built in 1974, so it is 51 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.

It carries about 90 vehicles a day, roughly 5% of them trucks, projected to reach 134 by 2040. The structure is 81 ft (24.7 m) long and 32 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesDowans Creek RD
CrossesDowans Creek
Location0.5E JCT SR101
RouteCounty Highway 14680
Coordinates47.8737, -124.33188
Functional classRural Local

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.9 US tons
Inventory rating21.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length81 ft (24.7 m)
Longest span79 ft (24.1 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2021)
Projected traffic134 by 2040
Trucks5%
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$3.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Dowans Creek RD over Dowans Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Dowans Creek RD over Dowans 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 May 2024.

How much traffic does Dowans Creek RD over Dowans Creek carry?

About 90 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Dowans Creek RD over Dowans Creek?

The structure is 81 ft (24.7 m) long with a longest span of 79 ft (24.1 m) and a deck 32 ft wide.

Who owns Dowans Creek RD over Dowans Creek?

It is owned by the County Highway Agency.