US Bridges

FSR 128.1B over Elk Creek

Good

Conejos County, Colorado · 0.15 MI from CO SH 17 · Structure no. 020903000014194

Built
2011
14 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
1 main span
Daily traffic
129
2003 count
Owner
Federal
U.S. Forest Service

About this bridge

FSR 128.1B over Elk Creek is a steel stringer/multi-beam or girder carrying FSR 128.1B over Elk Creek in Conejos County, Colorado. It was built in 2011, so it is 14 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 129 vehicles a day, roughly 4% of them trucks, projected to reach 193 by 2045. The structure is 61 ft (18.7 m) long and 17 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesFSR 128.1B
CrossesElk Creek
Location0.15 MI from CO SH 17
RouteFederal Lands Road 128.1
Coordinates37.1237, -106.36925
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56.8 US tons
Inventory rating43.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length61 ft (18.7 m)
Longest span58 ft (17.8 m)
Deck width17 ft (5.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic129 (2003)
Projected traffic193 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 FSR 128.1B over Elk Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is FSR 128.1B over Elk 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 2023.

How much traffic does FSR 128.1B over Elk Creek carry?

About 129 vehicles per day (2003 count), of which roughly 4% are trucks.

How long is FSR 128.1B over Elk Creek?

The structure is 61 ft (18.7 m) long with a longest span of 58 ft (17.8 m) and a deck 17 ft wide.

Who owns FSR 128.1B over Elk Creek?

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