US Bridges

3500 North Road over Deep Creek

Fair

Twin Falls County, Idaho · 6.4 S. 5.2 W. Buhl · Structure no. 000000000025610

Built
1965
60 years old, rebuilt 1992
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
22 ft
1 main span
Daily traffic
50
2023 count
Owner
Local
Other Local Agency

About this bridge

3500 North Road over Deep Creek is a steel stringer/multi-beam or girder carrying 3500 North Road over Deep Creek in Twin Falls County, Idaho. It was built in 1965 and reconstructed in 1992, so it is 60 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 5 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 75 by 2039. The structure is 22 ft (6.7 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries3500 North Road
CrossesDeep Creek
Location6.4 S. 5.2 W. Buhl
RouteCounty Highway 0
StateIdaho
Coordinates42.50611, -114.86278
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating44 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width28 ft (8.6 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic75 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 3500 North Road over Deep Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1992.

What condition is 3500 North Road over Deep Creek 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 February 2024.

How much traffic does 3500 North Road over Deep Creek carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 3500 North Road over Deep Creek?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 28 ft wide.

Who owns 3500 North Road over Deep Creek?

It is owned by the Other Local Agency.