US Bridges

Hebgen Lake Road over Watkins Creek

Good

Gallatin County, Montana · No Data Entered · Structure no. 011100000014949

Built
2011
14 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
47 ft
1 main span
Daily traffic
40
Owner
Federal
U.S. Forest Service

About this bridge

Hebgen Lake Road over Watkins Creek is a prestressed concrete stringer/multi-beam or girder carrying Hebgen Lake Road over Watkins Creek in Gallatin County, Montana. It was built in 2011, so it is 14 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 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 40 vehicles a day, projected to reach 60 by 2045. The structure is 47 ft (14.3 m) long and 24 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesHebgen Lake Road
CrossesWatkins Creek
LocationNo Data Entered
RouteFederal Lands Road 167
CountyGallatin County
StateMontana
Coordinates44.79899, -111.28679
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length47 ft (14.3 m)
Longest span42 ft (12.8 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (—)
Projected traffic60 by 2045
Trucks—
Lanes on structure2
Traffic directionTwo-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 Hebgen Lake Road over Watkins Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is Hebgen Lake Road over Watkins 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 2024.

How much traffic does Hebgen Lake Road over Watkins Creek carry?

About 40 vehicles per day (latest count).

How long is Hebgen Lake Road over Watkins Creek?

The structure is 47 ft (14.3 m) long with a longest span of 42 ft (12.8 m) and a deck 24 ft wide.

Who owns Hebgen Lake Road over Watkins Creek?

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