US Bridges

SH 112 Ml over Mclean Ditch

Good

Rio Grande County, Colorado · 5.5 MI NE of JCT US 160 · Structure no. N-11-T

Built
1947
78 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
26 ft
1 main span
Daily traffic
1,800
2020 count
Owner
State
State Highway Agency

About this bridge

SH 112 Ml over Mclean Ditch is a concrete culvert carrying SH 112 Ml over Mclean Ditch in Rio Grande County, Colorado. It was built in 1947, so it is 78 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 1,800 vehicles a day, roughly 13% of them trucks, projected to reach 2,088 by 2040. The structure is 26 ft (7.8 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSH 112 Ml
CrossesMclean Ditch
Location5.5 MI NE of JCT US 160
RouteState Highway 112A
Coordinates37.73333, -106.2815
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length26 ft (7.8 m)
Longest span26 ft (7.8 m)
Deck width39 ft (11.9 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2020)
Projected traffic2,088 by 2040
Trucks13%
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

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 Mclean Ditch built?

It was built in 1947, making it 78 years old in 2025.

What condition is SH 112 Ml over Mclean Ditch 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 Mclean Ditch carry?

About 1,800 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is SH 112 Ml over Mclean Ditch?

The structure is 26 ft (7.8 m) long with a longest span of 26 ft (7.8 m) and a deck 39 ft wide.

Who owns SH 112 Ml over Mclean Ditch?

It is owned by the State Highway Agency.