US Bridges

Storm Castle Road over French Creek

Good

Gallatin County, Montana · Storm Castle Creek · Structure no. 011106000016368

Built
2014
11 years old
Condition
Good
inspected September 2021
Type
Slab
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
40
Owner
Federal
U.S. Forest Service

About this bridge

Storm Castle Road over French Creek is a prestressed concrete slab carrying Storm Castle Road over French Creek in Gallatin County, Montana. It was built in 2014, so it is 11 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 40 vehicles a day, projected to reach 60 by 2045. The structure is 37 ft (11.3 m) long and 16 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesStorm Castle Road
CrossesFrench Creek
LocationStorm Castle Creek
RouteFederal Lands Road 132
CountyGallatin County
StateMontana
Coordinates45.42349, -111.12064
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length37 ft (11.3 m)
Longest span36 ft (11 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (—)
Projected traffic60 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 Storm Castle Road over French Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is Storm Castle Road over French 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 September 2021.

How much traffic does Storm Castle Road over French Creek carry?

About 40 vehicles per day (latest count).

How long is Storm Castle Road over French Creek?

The structure is 37 ft (11.3 m) long with a longest span of 36 ft (11 m) and a deck 16 ft wide.

Who owns Storm Castle Road over French Creek?

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