US Bridges

County Road over Smith Canyon Wasteway

Good

Franklin County, Washington · 1.70 W. of P-K Road · Structure no. 088464000000000

Built
2012
13 years old
Condition
Good
inspected November 2023
Type
Culvert
Steel
Length
34 ft
1 main span
Daily traffic
277
2023 count
Owner
County
County Highway Agency

About this bridge

County Road over Smith Canyon Wasteway is a steel culvert carrying County Road over Smith Canyon Wasteway in Franklin County, Washington. It was built in 2012, so it is 13 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 277 vehicles a day, roughly 54% of them trucks, projected to reach 730 by 2043. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesCounty Road
CrossesSmith Canyon Wasteway
Location1.70 W. of P-K Road
RouteCounty Highway 8840
CountyFranklin County
StateWashington
Coordinates46.28559, -118.99444
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHL 93
Structure length34 ft (10.4 m)
Longest span34 ft (10.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic277 (2023)
Projected traffic730 by 2043
Trucks54%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road over Smith Canyon Wasteway built?

It was built in 2012, making it 13 years old in 2025.

What condition is County Road over Smith Canyon Wasteway 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 November 2023.

How much traffic does County Road over Smith Canyon Wasteway carry?

About 277 vehicles per day (2023 count), of which roughly 54% are trucks.

How long is County Road over Smith Canyon Wasteway?

The structure is 34 ft (10.4 m) long with a longest span of 34 ft (10.4 m).

Who owns County Road over Smith Canyon Wasteway?

It is owned by the County Highway Agency.