US Bridges

NFSR 440.1 over Middle Fork Elk River

Good

Routt County, Colorado · 0.2 Mile S. of NFSR 400.1 · Structure no. 020603000024135

Built
1980
45 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
63 ft
2 main spans
Daily traffic
106
2012 count
Owner
Federal
U.S. Forest Service

About this bridge

NFSR 440.1 over Middle Fork Elk River is a wood or timber stringer/multi-beam or girder carrying NFSR 440.1 over Middle Fork Elk River in Routt County, Colorado. It was built in 1980, so it is 45 years old, older 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 106 vehicles a day, roughly 4% of them trucks, projected to reach 159 by 2045. The structure is 63 ft (19.1 m) long and 17 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesNFSR 440.1
CrossesMiddle Fork Elk River
Location0.2 Mile S. of NFSR 400.1
RouteFederal Lands Road 440.1
Coordinates40.75166, -106.82537
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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 20
Structure length63 ft (19.1 m)
Longest span30 ft (9.1 m)
Deck width17 ft (5.2 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic106 (2012)
Projected traffic159 by 2045
Trucks4%
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 440.1 over Middle Fork Elk River built?

It was built in 1980, making it 45 years old in 2025.

What condition is NFSR 440.1 over Middle Fork Elk River 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 2023.

How much traffic does NFSR 440.1 over Middle Fork Elk River carry?

About 106 vehicles per day (2012 count), of which roughly 4% are trucks.

How long is NFSR 440.1 over Middle Fork Elk River?

The structure is 63 ft (19.1 m) long with a longest span of 30 ft (9.1 m) and a deck 17 ft wide.

Who owns NFSR 440.1 over Middle Fork Elk River?

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