US Bridges

Heglar Canyon RD over Heglar Drain

Fair

Cassia County, Idaho · 8.5 S. 4.5 E. Raft River · Structure no. 000000000024185

Built
1984
41 years old
Condition
Fair
inspected March 2024
Type
Frame
Concrete
Length
24 ft
1 main span
Daily traffic
630
2023 count
Owner
Local
Other Local Agency

About this bridge

Heglar Canyon RD over Heglar Drain is a concrete frame carrying Heglar Canyon RD over Heglar Drain in Cassia County, Idaho. It was built in 1984, so it is 41 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.

It carries about 630 vehicles a day, roughly 9% of them trucks, projected to reach 945 by 2042. The structure is 24 ft (7.3 m) long and 30 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesHeglar Canyon RD
CrossesHeglar Drain
Location8.5 S. 4.5 E. Raft River
RouteCounty Highway 0
StateIdaho
Coordinates42.47322, -113.14819
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating36.7 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span24 ft (7.2 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic630 (2023)
Projected traffic945 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 Heglar Canyon RD over Heglar Drain built?

It was built in 1984, making it 41 years old in 2025.

What condition is Heglar Canyon RD over Heglar Drain 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 Heglar Canyon RD over Heglar Drain carry?

About 630 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Heglar Canyon RD over Heglar Drain?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.2 m) and a deck 30 ft wide.

Who owns Heglar Canyon RD over Heglar Drain?

It is owned by the Other Local Agency.