US Bridges

Adams Road over Noble Canal

Fair

Payette County, Idaho · 0.2N 0.7W New Plymouth · Structure no. 000000000028520

Built
1977
48 years old
Condition
Fair
inspected March 2024
Type
Tee Beam
Prestressed Concrete
Length
22 ft
1 main span
Daily traffic
2,610
2023 count
Owner
Local
Other Local Agency

About this bridge

Adams Road over Noble Canal is a prestressed concrete tee beam carrying Adams Road over Noble Canal in Payette County, Idaho. It was built in 1977, so it is 48 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 6 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 2,610 vehicles a day, roughly 10% of them trucks, projected to reach 3,915 by 2039. The structure is 22 ft (6.7 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesAdams Road
CrossesNoble Canal
Location0.2N 0.7W New Plymouth
RouteCounty Highway 0
CountyPayette County
StateIdaho
Coordinates43.97472, -116.83258
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,610 (2023)
Projected traffic3,915 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$458,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Adams Road over Noble Canal built?

It was built in 1977, making it 48 years old in 2025.

What condition is Adams Road over Noble 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 2024.

How much traffic does Adams Road over Noble Canal carry?

About 2,610 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Adams Road over Noble Canal?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 32 ft wide.

Who owns Adams Road over Noble Canal?

It is owned by the Other Local Agency.