US Bridges

CO RD 1 MI Lane over San Luis Valley Canal

Good

Alamosa County, Colorado · .1 MI E of CR 102 · Structure no. 003000102.3010A

Built
1993
32 years old
Condition
Good
inspected March 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
1 main span
Daily traffic
47
2022 count
Owner
County
County Highway Agency

About this bridge

CO RD 1 MI Lane over San Luis Valley Canal is a steel stringer/multi-beam or girder carrying CO RD 1 MI Lane over San Luis Valley Canal in Alamosa County, Colorado. It was built in 1993, so it is 32 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 47 vehicles a day, projected to reach 56 by 2042. The structure is 61 ft (18.6 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCO RD 1 MI Lane
CrossesSan Luis Valley Canal
Location.1 MI E of CR 102
RouteCounty Highway 0
Coordinates37.58899, -105.99768
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.1 US tons
Inventory rating22.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span54 ft (16.6 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47 (2022)
Projected traffic56 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD 1 MI Lane over San Luis Valley Canal built?

It was built in 1993, making it 32 years old in 2025.

What condition is CO RD 1 MI Lane over San Luis Valley Canal 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 March 2025.

How much traffic does CO RD 1 MI Lane over San Luis Valley Canal carry?

About 47 vehicles per day (2022 count).

How long is CO RD 1 MI Lane over San Luis Valley Canal?

The structure is 61 ft (18.6 m) long with a longest span of 54 ft (16.6 m) and a deck 28 ft wide.

Who owns CO RD 1 MI Lane over San Luis Valley Canal?

It is owned by the County Highway Agency.