US Bridges

Snake River Road over Fall Creek

Fair

Bonneville County, Idaho · 1.5 W 3.5 S Swan Valley · Structure no. 000000000031049

Built
2008
17 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
20
2023 count
Owner
County
County Highway Agency

About this bridge

Snake River Road over Fall Creek is a steel stringer/multi-beam or girder carrying Snake River Road over Fall Creek in Bonneville County, Idaho. It was built in 2008, so it is 17 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, roughly 5% of them trucks, projected to reach 30 by 2039. The structure is 50 ft (15.2 m) long and 28 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

CarriesSnake River Road
CrossesFall Creek
Location1.5 W 3.5 S Swan Valley
RouteCounty Highway 0
StateIdaho
Coordinates43.44167, -111.37842
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.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span45 ft (13.7 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic30 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Snake River Road over Fall Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Snake River 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 Snake River Road over Fall Creek carry?

About 20 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Snake River Road over Fall Creek?

The structure is 50 ft (15.2 m) long with a longest span of 45 ft (13.7 m) and a deck 28 ft wide.

Who owns Snake River Road over Fall Creek?

It is owned by the County Highway Agency.