US Bridges

NFSR 959.1 over Trout Creek

Good

Rio Blanco County, Colorado · 1 Mi. N. of Sheriff Resv · Structure no. 020601000001007

Built
1960
65 years old
Condition
Good
inspected October 2023
Type
Slab
Wood or Timber
Length
38 ft
1 main span
Daily traffic
72
2018 count
Owner
Federal
U.S. Forest Service

About this bridge

NFSR 959.1 over Trout Creek is a wood or timber slab carrying NFSR 959.1 over Trout Creek in Rio Blanco County, Colorado. It was built in 1960, so it is 65 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 72 vehicles a day, projected to reach 108 by 2045. The structure is 38 ft (11.5 m) long and 15 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesNFSR 959.1
CrossesTrout Creek
Location1 Mi. N. of Sheriff Resv
RouteFederal Lands Road 959.1
CountyRio Blanco County
StateColorado
Coordinates40.15942, -107.13185
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating28.9 US tons
Inventory rating22.5 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length38 ft (11.5 m)
Longest span37 ft (11.2 m)
Deck width15 ft (4.6 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic72 (2018)
Projected traffic108 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NFSR 959.1 over Trout Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is NFSR 959.1 over Trout 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 October 2023.

How much traffic does NFSR 959.1 over Trout Creek carry?

About 72 vehicles per day (2018 count).

How long is NFSR 959.1 over Trout Creek?

The structure is 38 ft (11.5 m) long with a longest span of 37 ft (11.2 m) and a deck 15 ft wide.

Who owns NFSR 959.1 over Trout Creek?

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