US Bridges

Elk Prairie Road over Fern Creek

Fair

Pacific County, Washington · 8.5 E Lewis CO · Structure no. 079962000000000

Built
1916
109 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
64 ft
1 main span
Daily traffic
85
2023 count
Owner
County
County Highway Agency

About this bridge

Elk Prairie Road over Fern Creek is a concrete culvert carrying Elk Prairie Road over Fern Creek in Pacific County, Washington. It was built in 1916, so it is 109 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 5 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 85 vehicles a day, roughly 5% of them trucks, projected to reach 300 by 2043. The structure is 64 ft (19.5 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesElk Prairie Road
CrossesFern Creek
Location8.5 E Lewis CO
RouteCounty Highway 94700
Coordinates46.54472, -123.523
Functional classRural Minor 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating48.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length64 ft (19.5 m)
Longest span40 ft (12.2 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic85 (2023)
Projected traffic300 by 2043
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of relocation of road
Estimated improvement cost$1.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Elk Prairie Road over Fern Creek built?

It was built in 1916, making it 109 years old in 2025.

What condition is Elk Prairie Road over Fern 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 June 2024.

How much traffic does Elk Prairie Road over Fern Creek carry?

About 85 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Elk Prairie Road over Fern Creek?

The structure is 64 ft (19.5 m) long with a longest span of 40 ft (12.2 m) and a deck 20 ft wide.

Who owns Elk Prairie Road over Fern Creek?

It is owned by the County Highway Agency.