US Bridges

Doyle Road over North Fork Willapa River

Good

Pacific County, Washington · 0.07 N JCT SR 6 · Structure no. 086131000000000

Built
1994
31 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
155 ft
3 main spans
Daily traffic
49
2023 count
Owner
County
County Highway Agency

About this bridge

Doyle Road over North Fork Willapa River is a prestressed concrete continuous stringer/multi-beam or girder carrying Doyle Road over North Fork Willapa River in Pacific County, Washington. It was built in 1994, so it is 31 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 49 vehicles a day, roughly 40% of them trucks, projected to reach 60 by 2043. The structure is 155 ft (47.2 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesDoyle Road
CrossesNorth Fork Willapa River
Location0.07 N JCT SR 6
RouteCounty Highway 48350
Coordinates46.56425, -123.58844
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52 US tons
Inventory rating37 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length155 ft (47.2 m)
Longest span80 ft (24.4 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49 (2023)
Projected traffic60 by 2043
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Doyle Road over North Fork Willapa River built?

It was built in 1994, making it 31 years old in 2025.

What condition is Doyle Road over North Fork 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 Doyle Road over North Fork Willapa River carry?

About 49 vehicles per day (2023 count), of which roughly 40% are trucks.

How long is Doyle Road over North Fork Willapa River?

The structure is 155 ft (47.2 m) long with a longest span of 80 ft (24.4 m) and a deck 24 ft wide.

Who owns Doyle Road over North Fork Willapa River?

It is owned by the County Highway Agency.