US Bridges

Fall Ck.-Rocky Bar over Fall Creek

Fair

Elmore County, Idaho · 2 MI S. of Red Mountain · Structure no. 040201000001034

Built
1984
41 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
36 ft
1 main span
Daily traffic
20
2018 count
Owner
Federal
U.S. Forest Service

About this bridge

Fall Ck.-Rocky Bar over Fall Creek is a wood or timber stringer/multi-beam or girder carrying Fall Ck.-Rocky Bar over Fall Creek in Elmore 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 20 vehicles a day, projected to reach 30 by 2045. The structure is 36 ft (11 m) long and 15 ft wide. If it were closed, the detour would be 13.7 mi (22 km).

CarriesFall Ck.-Rocky Bar
CrossesFall Creek
Location2 MI S. of Red Mountain
RouteFederal Lands Road 129
StateIdaho
Coordinates43.51014, -115.42357
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27.9 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadOther
Structure length36 ft (11 m)
Longest span35 ft (10.7 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2018)
Projected traffic30 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13.7 mi (22 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fall Ck.-Rocky Bar over Fall Creek built?

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

What condition is Fall Ck.-Rocky Bar over Fall 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 September 2023.

How much traffic does Fall Ck.-Rocky Bar over Fall Creek carry?

About 20 vehicles per day (2018 count).

How long is Fall Ck.-Rocky Bar over Fall Creek?

The structure is 36 ft (11 m) long with a longest span of 35 ft (10.7 m) and a deck 15 ft wide.

Who owns Fall Ck.-Rocky Bar over Fall Creek?

It is owned by the U.S. Forest Service.