US Bridges

Custer Road over Farmers Coop Canal

Fair

Payette County, Idaho · 0.9S 2.6W New Plymouth · Structure no. 000000000028400

Built
1965
60 years old
Condition
Fair
inspected March 2023
Type
Tee Beam
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
100
2023 count
Owner
Local
Other Local Agency

About this bridge

Custer Road over Farmers Coop Canal is a prestressed concrete tee beam carrying Custer Road over Farmers Coop Canal in Payette County, Idaho. It was built in 1965, so it is 60 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 150 by 2039. The structure is 30 ft (9.1 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCuster Road
CrossesFarmers Coop Canal
Location0.9S 2.6W New Plymouth
RouteCounty Highway 0
CountyPayette County
StateIdaho
Coordinates43.96214, -116.87358
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic150 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$354,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Custer Road over Farmers Coop Canal built?

It was built in 1965, making it 60 years old in 2025.

What condition is Custer Road over Farmers Coop Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does Custer Road over Farmers Coop Canal carry?

About 100 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Custer Road over Farmers Coop Canal?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 28 ft wide.

Who owns Custer Road over Farmers Coop Canal?

It is owned by the Other Local Agency.