US Bridges

Diggie Road over North Canal

FairPosted for load

Bingham County, Idaho · 2.1 S. 0.5 W. Blackfoot · Structure no. 000000000022495

Built
1986
39 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
150
2023 count
Owner
County
County Highway Agency

About this bridge

Diggie Road over North Canal is a prestressed concrete tee beam carrying Diggie Road over North Canal in Bingham County, Idaho. It was built in 1986, so it is 39 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 150 vehicles a day, roughly 10% of them trucks, projected to reach 225 by 2039. The structure is 40 ft (12.2 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesDiggie Road
CrossesNorth Canal
Location2.1 S. 0.5 W. Blackfoot
RouteCounty Highway 0
StateIdaho
Coordinates43.1585, -112.35825
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.7 US tons
Inventory rating29.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic225 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byBureau of Indian Affairs
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Diggie Road over North Canal built?

It was built in 1986, making it 39 years old in 2025.

What condition is Diggie Road over North 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 October 2024.

How much traffic does Diggie Road over North Canal carry?

About 150 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Diggie Road over North Canal?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 34 ft wide.

Who owns Diggie Road over North Canal?

It is owned by the County Highway Agency and maintained by the Bureau of Indian Affairs.