US Bridges

Fun Farm Road over Henrys Fk Snake River

PoorPosted for load

Fremont County, Idaho · 0.9 S. 2.5 W. Chester · Structure no. 000000000031840

Built
1925
100 years old, rebuilt 1998
Condition
Poor
inspected October 2024
Type
Truss - Thru
Steel
Length
157 ft
1 main span
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

Fun Farm Road over Henrys Fk Snake River is a steel truss - thru carrying Fun Farm Road over Henrys Fk Snake River in Fremont County, Idaho. It was built in 1925 and reconstructed in 1998, so it is 100 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 30 vehicles a day, roughly 5% of them trucks, projected to reach 45 by 2039. The structure is 157 ft (47.9 m) long and 18 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFun Farm Road
CrossesHenrys Fk Snake River
Location0.9 S. 2.5 W. Chester
RouteCounty Highway 0
StateIdaho
Coordinates43.98308, -111.62486
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27 US tons
Inventory rating16 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadH 15
Structure length157 ft (47.9 m)
Longest span152 ft (46.3 m)
Deck width18 ft (5.4 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deck8 ft (2.6 m)

Traffic and service

Average daily traffic30 (2023)
Projected traffic45 by 2039
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.3 million (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Fun Farm Road over Henrys Fk Snake River built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1998.

What condition is Fun Farm Road over Henrys Fk Snake River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Fun Farm Road over Henrys Fk Snake River carry?

About 30 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Fun Farm Road over Henrys Fk Snake River?

The structure is 157 ft (47.9 m) long with a longest span of 152 ft (46.3 m) and a deck 18 ft wide.

Who owns Fun Farm Road over Henrys Fk Snake River?

It is owned by the County Highway Agency.