US Bridges

I 15 Sbl over Beaver Creek

Fair

Jefferson County, Idaho · 5.0 N. Hamer · Structure no. 000000000011895

Built
1989
36 years old
Condition
Fair
inspected November 2021
Type
Stringer/Multi-beam or Girder
Concrete
Length
39 ft
1 main span
Daily traffic
1,700
2023 count
Owner
State
State Highway Agency

About this bridge

I 15 Sbl over Beaver Creek is a concrete stringer/multi-beam or girder carrying I 15 Sbl over Beaver Creek in Jefferson County, Idaho. It was built in 1989, so it is 36 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 1,700 vehicles a day, roughly 41% of them trucks, projected to reach 2,550 by 2042. The structure is 39 ft (11.9 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 15 Sbl
CrossesBeaver Creek
Location5.0 N. Hamer
RouteInterstate 15
StateIdaho
Coordinates43.9948, -112.23147
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating51 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length39 ft (11.9 m)
Longest span38 ft (11.6 m)
Deck width44 ft (13.3 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2023)
Projected traffic2,550 by 2042
Trucks41%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I 15 Sbl over Beaver Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is I 15 Sbl over Beaver 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 November 2021.

How much traffic does I 15 Sbl over Beaver Creek carry?

About 1,700 vehicles per day (2023 count), of which roughly 41% are trucks.

How long is I 15 Sbl over Beaver Creek?

The structure is 39 ft (11.9 m) long with a longest span of 38 ft (11.6 m) and a deck 44 ft wide.

Who owns I 15 Sbl over Beaver Creek?

It is owned by the State Highway Agency.