US Bridges

Annonen RD over Olequa Ck

Good

Lewis County, Washington · 1.0 N Vader · Structure no. 087033000000000

Built
2002
23 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
140 ft
1 main span
Daily traffic
47
2022 count
Owner
County
County Highway Agency

About this bridge

Annonen RD over Olequa Ck is a prestressed concrete stringer/multi-beam or girder carrying Annonen RD over Olequa Ck in Lewis County, Washington. It was built in 2002, so it is 23 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 47 vehicles a day, roughly 17% of them trucks, projected to reach 85 by 2042. The structure is 140 ft (42.7 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesAnnonen RD
CrossesOlequa Ck
Location1.0 N Vader
RouteCounty Highway 35800
Coordinates46.41525, -122.96712
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating95 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length140 ft (42.7 m)
Longest span137 ft (41.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47 (2022)
Projected traffic85 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 relocation of road
Estimated improvement cost$5.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Annonen RD over Olequa Ck built?

It was built in 2002, making it 23 years old in 2025.

What condition is Annonen RD over Olequa Ck in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does Annonen RD over Olequa Ck carry?

About 47 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Annonen RD over Olequa Ck?

The structure is 140 ft (42.7 m) long with a longest span of 137 ft (41.8 m) and a deck 30 ft wide.

Who owns Annonen RD over Olequa Ck?

It is owned by the County Highway Agency.