US Bridges

Ferrier RD over Olequa Creek

Poor

Lewis County, Washington · 0.23 E J Winlock-Vader RD · Structure no. 080814000000000

Built
1924
101 years old, rebuilt 1988
Condition
Poor
inspected September 2024
Type
Truss - Thru
Steel
Length
153 ft
1 main span
Daily traffic
215
2022 count
Owner
County
County Highway Agency

About this bridge

Ferrier RD over Olequa Creek is a steel truss - thru carrying Ferrier RD over Olequa Creek in Lewis County, Washington. It was built in 1924 and reconstructed in 1988, so it is 101 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 215 vehicles a day, roughly 7% of them trucks, projected to reach 392 by 2042. The structure is 153 ft (46.6 m) long and 19 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesFerrier RD
CrossesOlequa Creek
Location0.23 E J Winlock-Vader RD
RouteCounty Highway 37000
CountyLewis County
StateWashington
Coordinates46.44533, -122.96233
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48 US tons
Inventory rating29 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadOther
Structure length153 ft (46.6 m)
Longest span100 ft (30.5 m)
Deck width19 ft (5.8 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deck12 ft (3.6 m)

Traffic and service

Average daily traffic215 (2022)
Projected traffic392 by 2042
Trucks7%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ferrier RD over Olequa Creek built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1988.

What condition is Ferrier RD over Olequa Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Ferrier RD over Olequa Creek carry?

About 215 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Ferrier RD over Olequa Creek?

The structure is 153 ft (46.6 m) long with a longest span of 100 ft (30.5 m) and a deck 19 ft wide.

Who owns Ferrier RD over Olequa Creek?

It is owned by the County Highway Agency.