US Bridges

Allendale RD over Deer Flat Low Line Canal

Good

Canyon County, Idaho · 3.7 S 2.0 E Wilder · Structure no. 000000000026826

Built
2024
1 years old
Condition
Good
inspected June 2024
Type
Frame
Concrete
Length
25 ft
1 main span
Daily traffic
240
2023 count
Owner
Local
Other Local Agency

About this bridge

Allendale RD over Deer Flat Low Line Canal is a concrete frame carrying Allendale RD over Deer Flat Low Line Canal in Canyon County, Idaho. It was built in 2024, so it is 1 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 240 vehicles a day, roughly 8% of them trucks, projected to reach 360 by 2042. The structure is 25 ft (7.7 m) long and 48 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesAllendale RD
CrossesDeer Flat Low Line Canal
Location3.7 S 2.0 E Wilder
RouteCounty Highway 3790
StateIdaho
Coordinates43.62257, -116.87167
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length25 ft (7.7 m)
Longest span23 ft (7 m)
Deck width48 ft (14.5 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (2023)
Projected traffic360 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Allendale RD over Deer Flat Low Line Canal built?

It was built in 2024, making it 1 years old in 2025.

What condition is Allendale RD over Deer Flat Low Line Canal 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 June 2024.

How much traffic does Allendale RD over Deer Flat Low Line Canal carry?

About 240 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Allendale RD over Deer Flat Low Line Canal?

The structure is 25 ft (7.7 m) long with a longest span of 23 ft (7 m) and a deck 48 ft wide.

Who owns Allendale RD over Deer Flat Low Line Canal?

It is owned by the Other Local Agency.