US Bridges

Road C SE over Frenchman Hills Wasteway

Good

Grant County, Washington · 4 MI W. of Potholes Res. · Structure no. 11WC0201

Built
2008
17 years old
Condition
Good
inspected November 2023
Type
Culvert
Other
Length
46 ft
5 main spans
Daily traffic
15
2023 count
Owner
Federal
Bureau of Reclamation

About this bridge

Road C SE over Frenchman Hills Wasteway is a other culvert carrying Road C SE over Frenchman Hills Wasteway in Grant County, Washington. It was built in 2008, so it is 17 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 15 vehicles a day, projected to reach 20 by 2043. The structure is 46 ft (14 m) long and 28 ft wide. If it were closed, the detour would be 15.5 mi (25 km).

Location

Open in Google Maps
CarriesRoad C SE
CrossesFrenchman Hills Wasteway
Location4 MI W. of Potholes Res.
CountyGrant County
StateWashington
Coordinates46.97433, -119.42909
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
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 geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialOther
DeckNot applicable
Main spans5
Design loadUnknown
Structure length46 ft (14 m)
Longest span46 ft (14 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2023)
Projected traffic20 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed15.5 mi (25 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Reclamation
Maintained byOther Local Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Road C SE over Frenchman Hills Wasteway built?

It was built in 2008, making it 17 years old in 2025.

What condition is Road C SE over Frenchman Hills 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 Road C SE over Frenchman Hills Wasteway carry?

About 15 vehicles per day (2023 count).

How long is Road C SE over Frenchman Hills Wasteway?

The structure is 46 ft (14 m) long with a longest span of 46 ft (14 m) and a deck 28 ft wide.

Who owns Road C SE over Frenchman Hills Wasteway?

It is owned by the Bureau of Reclamation and maintained by the Other Local Agency.