US Bridges

Oil City Road over Anderson Creek

Fair

Jefferson County, Washington · 4.4SW JCT SR101 · Structure no. 081458000000000

Built
1974
51 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Prestressed Concrete
Length
87 ft
1 main span
Daily traffic
130
2021 count
Owner
County
County Highway Agency

About this bridge

Oil City Road over Anderson Creek is a prestressed concrete tee beam carrying Oil City Road over Anderson 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 130 vehicles a day, roughly 40% of them trucks, projected to reach 250 by 2040. The structure is 87 ft (26.5 m) long and 32 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesOil City Road
CrossesAnderson Creek
Location4.4SW JCT SR101
RouteCounty Highway 13430
CountyJefferson County
StateWashington
Coordinates47.77209, -124.32271
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26.8 US tons
Inventory rating20.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length87 ft (26.5 m)
Longest span85 ft (26 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2021)
Projected traffic250 by 2040
Trucks40%
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$3.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Oil City Road over Anderson Creek built?

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

What condition is Oil City Road over Anderson 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 Oil City Road over Anderson Creek carry?

About 130 vehicles per day (2021 count), of which roughly 40% are trucks.

How long is Oil City Road over Anderson Creek?

The structure is 87 ft (26.5 m) long with a longest span of 85 ft (26 m) and a deck 32 ft wide.

Who owns Oil City Road over Anderson Creek?

It is owned by the County Highway Agency.