US Bridges

NFSR 391 over N. Fork Lake Creek

Good

Lake County, Colorado · .1 MI SW HWY 82 / MP71 · Structure no. 021201000015838

Built
2014
11 years old
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
66
2002 count
Owner
Federal
U.S. Forest Service

About this bridge

NFSR 391 over N. Fork Lake Creek is a prestressed concrete box beam or girders - multiple carrying NFSR 391 over N. Fork Lake Creek in Lake County, Colorado. It was built in 2014, so it is 11 years old, younger than the Colorado average of 42.2 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 66 vehicles a day, projected to reach 99 by 2045. The structure is 55 ft (16.9 m) long and 15 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesNFSR 391
CrossesN. Fork Lake Creek
Location.1 MI SW HWY 82 / MP71
RouteFederal Lands Road 391
Coordinates39.06706, -106.50544
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length55 ft (16.9 m)
Longest span53 ft (16.1 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic66 (2002)
Projected traffic99 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 NFSR 391 over N. Fork Lake Creek built?

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

What condition is NFSR 391 over N. Fork Lake 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 2024.

How much traffic does NFSR 391 over N. Fork Lake Creek carry?

About 66 vehicles per day (2002 count).

How long is NFSR 391 over N. Fork Lake Creek?

The structure is 55 ft (16.9 m) long with a longest span of 53 ft (16.1 m) and a deck 15 ft wide.

Who owns NFSR 391 over N. Fork Lake Creek?

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