US Bridges

No Data Entered over Rock Creek Tributary

Good

Carbon County, Montana · No Data Entered · Structure no. 010802000012382

Built
2010
15 years old
Condition
Good
inspected August 2024
Type
Slab
Wood or Timber
Length
23 ft
1 main span
Daily traffic
40
Owner
Federal
U.S. Forest Service

About this bridge

No Data Entered over Rock Creek Tributary is a wood or timber slab carrying No Data Entered over Rock Creek Tributary in Carbon County, Montana. It was built in 2010, so it is 15 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 23 ft (7 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
CarriesNo Data Entered
CrossesRock Creek Tributary
LocationNo Data Entered
RouteFederal Lands Road 2379A
CountyCarbon County
StateMontana
Coordinates45.08388, -109.33363
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 inspectionAugust 2024
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 alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length23 ft (7 m)
Longest span22 ft (6.7 m)
Deck width16 ft (4.8 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 closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was No Data Entered over Rock Creek Tributary built?

It was built in 2010, making it 15 years old in 2025.

What condition is No Data Entered over Rock Creek Tributary 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 August 2024.

How much traffic does No Data Entered over Rock Creek Tributary carry?

About 40 vehicles per day (latest count).

How long is No Data Entered over Rock Creek Tributary?

The structure is 23 ft (7 m) long with a longest span of 22 ft (6.7 m) and a deck 16 ft wide.

Who owns No Data Entered over Rock Creek Tributary?

It is owned by the U.S. Forest Service and maintained by the County Highway Agency.