US Bridges

SH 112 Ml over Farmers Union Canal

Fair

Rio Grande County, Colorado · In Center 2 MI E of US285 · Structure no. N-12-H

Built
1938
87 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
45 ft
3 main spans
Daily traffic
2,300
2020 count
Owner
State
State Highway Agency

About this bridge

SH 112 Ml over Farmers Union Canal is a concrete culvert carrying SH 112 Ml over Farmers Union Canal in Rio Grande County, Colorado. It was built in 1938, so it is 87 years old, older than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,300 vehicles a day, roughly 9% of them trucks, projected to reach 2,530 by 2040. The structure is 45 ft (13.7 m) long and 72 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSH 112 Ml
CrossesFarmers Union Canal
LocationIn Center 2 MI E of US285
RouteState Highway 112A
Coordinates37.74809, -106.11218
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.5 US tons
Inventory rating29.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length45 ft (13.7 m)
Longest span14 ft (4.3 m)
Deck width72 ft (21.9 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2020)
Projected traffic2,530 by 2040
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 112 Ml over Farmers Union Canal built?

It was built in 1938, making it 87 years old in 2025.

What condition is SH 112 Ml over Farmers Union Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does SH 112 Ml over Farmers Union Canal carry?

About 2,300 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is SH 112 Ml over Farmers Union Canal?

The structure is 45 ft (13.7 m) long with a longest span of 14 ft (4.3 m) and a deck 72 ft wide.

Who owns SH 112 Ml over Farmers Union Canal?

It is owned by the State Highway Agency.