US Bridges

Rock Creek Road over I 86;ROCK Creek RD Ic

Fair

Power County, Idaho · 5.9 W. American Falls · Structure no. 000000000023590

Built
1984
41 years old
Condition
Fair
inspected April 2022
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
355 ft
4 main spans
Daily traffic
160
2023 count
Owner
State
State Highway Agency

About this bridge

Rock Creek Road over I 86;ROCK Creek RD Ic is a concrete continuous box beam or girders - single or spread carrying Rock Creek Road over I 86;ROCK Creek RD Ic in Power 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 160 vehicles a day, projected to reach 240 by 2042. The structure is 355 ft (108.2 m) long and 40 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesRock Creek Road
CrossesI 86;ROCK Creek RD Ic
Location5.9 W. American Falls
RouteCounty Highway 0
CountyPower County
StateIdaho
Coordinates42.71075, -112.92558
Functional classRural Major Collector

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.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating48 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length355 ft (108.2 m)
Longest span128 ft (39 m)
Deck width40 ft (12.1 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2023)
Projected traffic240 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed8.7 mi (14 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rock Creek Road over I 86;ROCK Creek RD Ic built?

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

What condition is Rock Creek Road over I 86;ROCK Creek RD Ic 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 2022.

How much traffic does Rock Creek Road over I 86;ROCK Creek RD Ic carry?

About 160 vehicles per day (2023 count).

How long is Rock Creek Road over I 86;ROCK Creek RD Ic?

The structure is 355 ft (108.2 m) long with a longest span of 128 ft (39 m) and a deck 40 ft wide.

Who owns Rock Creek Road over I 86;ROCK Creek RD Ic?

It is owned by the State Highway Agency.