US Bridges

FSR105 over Conejos River

Good

Conejos County, Colorado · Conejos River Saddle · Structure no. 020903000013102

Built
2014
11 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
96 ft
1 main span
Daily traffic
44
2003 count
Owner
Federal
U.S. Forest Service

About this bridge

FSR105 over Conejos River is a steel stringer/multi-beam or girder carrying FSR105 over Conejos River in Conejos 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 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 44 vehicles a day, projected to reach 66 by 2045. The structure is 96 ft (29.3 m) long and 17 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesFSR105
CrossesConejos River
LocationConejos River Saddle
RouteFederal Lands Road 105
Coordinates37.30085, -106.48039
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 inspectionJuly 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.9 US tons
Inventory rating30 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length96 ft (29.3 m)
Longest span93 ft (28.2 m)
Deck width17 ft (5.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44 (2003)
Projected traffic66 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 FSR105 over Conejos River built?

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

What condition is FSR105 over Conejos 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 July 2023.

How much traffic does FSR105 over Conejos River carry?

About 44 vehicles per day (2003 count).

How long is FSR105 over Conejos River?

The structure is 96 ft (29.3 m) long with a longest span of 93 ft (28.2 m) and a deck 17 ft wide.

Who owns FSR105 over Conejos River?

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