US Bridges

Hanen Road over Willapa River

Good

Pacific County, Washington · 11.2 SE JCT 6 & 101 · Structure no. 086130000000000

Built
1989
36 years old
Condition
Good
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
133 ft
3 main spans
Daily traffic
17
2023 count
Owner
County
County Highway Agency

About this bridge

Hanen Road over Willapa River is a prestressed concrete tee beam carrying Hanen Road over Willapa River in Pacific County, Washington. It was built in 1989, so it is 36 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 17 vehicles a day, projected to reach 70 by 2043. The structure is 133 ft (40.5 m) long and 18 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesHanen Road
CrossesWillapa River
Location11.2 SE JCT 6 & 101
RouteCounty Highway 48230
CountyPacific County
StateWashington
Coordinates46.56225, -123.61208
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating30 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length133 ft (40.5 m)
Longest span69 ft (21.1 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17 (2023)
Projected traffic70 by 2043
Trucks0%
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 statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hanen Road over Willapa River built?

It was built in 1989, making it 36 years old in 2025.

What condition is Hanen Road over Willapa River 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 June 2024.

How much traffic does Hanen Road over Willapa River carry?

About 17 vehicles per day (2023 count).

How long is Hanen Road over Willapa River?

The structure is 133 ft (40.5 m) long with a longest span of 69 ft (21.1 m) and a deck 18 ft wide.

Who owns Hanen Road over Willapa River?

It is owned by the County Highway Agency.