US Bridges

County Road over W B 5 W W 1

GoodPosted for load

Franklin County, Washington · 0.40 S Filbert 408 · Structure no. 079722000000000

Built
1959
66 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
39 ft
2 main spans
Daily traffic
48
2023 count
Owner
County
County Highway Agency

About this bridge

County Road over W B 5 W W 1 is a wood or timber stringer/multi-beam or girder carrying County Road over W B 5 W W 1 in Franklin County, Washington. It was built in 1959, so it is 66 years old, older 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. Its operating status is: posted for load restriction.

It carries about 48 vehicles a day, roughly 32% of them trucks, projected to reach 170 by 2040. The structure is 39 ft (11.9 m) long and 25 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesCounty Road
CrossesW B 5 W W 1
Location0.40 S Filbert 408
RouteCounty Highway 4790
CountyFranklin County
StateWashington
Coordinates46.64329, -119.24059
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.6 US tons
Inventory rating17.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 15
Structure length39 ft (11.9 m)
Longest span19 ft (5.8 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48 (2023)
Projected traffic170 by 2040
Trucks32%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road over W B 5 W W 1 built?

It was built in 1959, making it 66 years old in 2025.

What condition is County Road over W B 5 W W 1 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 December 2023.

How much traffic does County Road over W B 5 W W 1 carry?

About 48 vehicles per day (2023 count), of which roughly 32% are trucks.

How long is County Road over W B 5 W W 1?

The structure is 39 ft (11.9 m) long with a longest span of 19 ft (5.8 m) and a deck 25 ft wide.

Who owns County Road over W B 5 W W 1?

It is owned by the County Highway Agency.