US Bridges

SH 39 over Hege Drain

Fair

Bingham County, Idaho · 5.1 S. Aberdeen · Structure no. 000000000014160

Built
1962
63 years old
Condition
Fair
inspected April 2024
Type
Frame
Concrete
Length
28 ft
1 main span
Daily traffic
2,700
2023 count
Owner
State
State Highway Agency

About this bridge

SH 39 over Hege Drain is a concrete frame carrying SH 39 over Hege Drain in Bingham County, Idaho. It was built in 1962, so it is 63 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 2,700 vehicles a day, roughly 27% of them trucks, projected to reach 4,050 by 2042. The structure is 28 ft (8.5 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSH 39
CrossesHege Drain
Location5.1 S. Aberdeen
RouteState Highway 39
StateIdaho
Coordinates42.87597, -112.85564
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 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 rating50 US tons
Inventory rating30 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width42 ft (12.8 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2023)
Projected traffic4,050 by 2042
Trucks27%
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

OwnerState Highway Agency
Maintained byState Highway 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 SH 39 over Hege Drain built?

It was built in 1962, making it 63 years old in 2025.

What condition is SH 39 over Hege 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 April 2024.

How much traffic does SH 39 over Hege Drain carry?

About 2,700 vehicles per day (2023 count), of which roughly 27% are trucks.

How long is SH 39 over Hege Drain?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 42 ft wide.

Who owns SH 39 over Hege Drain?

It is owned by the State Highway Agency.