US Bridges

Fdr 40135 over Antelope Creek

Good

Butte County, Idaho · Antelope G.S. · Structure no. 041304000011687

Built
2007
18 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
1 main span
Daily traffic
20
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 40135 over Antelope Creek is a steel stringer/multi-beam or girder carrying Fdr 40135 over Antelope Creek in Butte County, Idaho. It was built in 2007, so it is 18 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20 vehicles a day, projected to reach 30 by 2045. The structure is 80 ft (24.4 m) long and 14 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesFdr 40135
CrossesAntelope Creek
LocationAntelope G.S.
RouteFederal Lands Road 40135
StateIdaho
Coordinates43.66235, -113.674
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation*: *
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating—
Inventory rating—

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 25 or greater
Structure length80 ft (24.4 m)
Longest span79 ft (24.1 m)
Deck width14 ft (4.3 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2006)
Projected traffic30 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 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 Fdr 40135 over Antelope Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Fdr 40135 over Antelope Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Fdr 40135 over Antelope Creek carry?

About 20 vehicles per day (2006 count).

How long is Fdr 40135 over Antelope Creek?

The structure is 80 ft (24.4 m) long with a longest span of 79 ft (24.1 m) and a deck 14 ft wide.

Who owns Fdr 40135 over Antelope Creek?

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