US Bridges

SH 112 Ml over Farmers Union Canal

Good

Rio Grande County, Colorado · 12.6 MI NE of JCT US 160 · Structure no. N-12-AC

Built
1948
77 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete
Length
66 ft
3 main spans
Daily traffic
1,700
2020 count
Owner
State
State Highway Agency

About this bridge

SH 112 Ml over Farmers Union Canal is a concrete slab carrying SH 112 Ml over Farmers Union Canal in Rio Grande County, Colorado. It was built in 1948, so it is 77 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 1,700 vehicles a day, roughly 11% of them trucks, projected to reach 2,040 by 2040. The structure is 66 ft (20.2 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSH 112 Ml
CrossesFarmers Union Canal
Location12.6 MI NE of JCT US 160
RouteState Highway 112A
Coordinates37.74811, -106.15839
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.9 US tons
Inventory rating22 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length66 ft (20.2 m)
Longest span24 ft (7.3 m)
Deck width29 ft (8.8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2020)
Projected traffic2,040 by 2040
Trucks11%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$103,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 112 Ml over Farmers Union Canal built?

It was built in 1948, making it 77 years old in 2025.

What condition is SH 112 Ml over Farmers Union 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 2023.

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

About 1,700 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is SH 112 Ml over Farmers Union Canal?

The structure is 66 ft (20.2 m) long with a longest span of 24 ft (7.3 m) and a deck 29 ft wide.

Who owns SH 112 Ml over Farmers Union Canal?

It is owned by the State Highway Agency.