US Bridges

Forest Road over Jungle Creek

Good

Flathead County, Montana · Jungle CR · Structure no. 011004000000136

Built
1982
43 years old
Condition
Good
inspected July 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
62 ft
1 main span
Daily traffic
40
1992 count
Owner
Federal
U.S. Forest Service

About this bridge

Forest Road over Jungle Creek is a prestressed concrete stringer/multi-beam or girder carrying Forest Road over Jungle Creek in Flathead County, Montana. It was built in 1982, so it is 43 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 62 ft (19 m) long and 21 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesForest Road
CrossesJungle Creek
LocationJungle CR
RouteFederal Lands Road 2826
StateMontana
Coordinates47.88444, -113.48977
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJuly 2021
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55.3 US tons
Inventory rating42.5 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length62 ft (19 m)
Longest span60 ft (18.3 m)
Deck width21 ft (6.5 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (1992)
Projected traffic60 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 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 Forest Road over Jungle Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is Forest Road over Jungle 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 July 2021.

How much traffic does Forest Road over Jungle Creek carry?

About 40 vehicles per day (1992 count).

How long is Forest Road over Jungle Creek?

The structure is 62 ft (19 m) long with a longest span of 60 ft (18.3 m) and a deck 21 ft wide.

Who owns Forest Road over Jungle Creek?

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