US Bridges

Myrtle Ck. Road over Fall Creek

Fair

Elmore County, Idaho · .5 MI NW Ice Spring C.G. · Structure no. 040201000001029

Built
1980
45 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
28 ft
1 main span
Daily traffic
10
2018 count
Owner
Federal
U.S. Forest Service

About this bridge

Myrtle Ck. Road over Fall Creek is a wood or timber stringer/multi-beam or girder carrying Myrtle Ck. Road over Fall Creek in Elmore County, Idaho. It was built in 1980, so it is 45 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 10 vehicles a day, projected to reach 15 by 2045. The structure is 28 ft (8.5 m) long and 15 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesMyrtle Ck. Road
CrossesFall Creek
Location.5 MI NW Ice Spring C.G.
RouteFederal Lands Road 101
CountyElmore County
StateIdaho
Coordinates43.48873, -115.40187
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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 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 rating52.1 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 25 or greater
Structure length28 ft (8.5 m)
Longest span27 ft (8.2 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2018)
Projected traffic15 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 Myrtle Ck. Road over Fall Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Myrtle Ck. Road 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 2024.

How much traffic does Myrtle Ck. Road over Fall Creek carry?

About 10 vehicles per day (2018 count).

How long is Myrtle Ck. Road over Fall Creek?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.2 m) and a deck 15 ft wide.

Who owns Myrtle Ck. Road over Fall Creek?

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