US Bridges

SH 71 Ml over Lake Canal

Fair

Otero County, Colorado · 3.2 MI No of JCT US 50 Ml · Structure no. L-22-JA

Built
2018
7 years old
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
73 ft
1 main span
Daily traffic
1,700
2020 count
Owner
State
State Highway Agency

About this bridge

SH 71 Ml over Lake Canal is a prestressed concrete box beam or girders - multiple carrying SH 71 Ml over Lake Canal in Otero County, Colorado. It was built in 2018, so it is 7 years old, younger 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 1,700 vehicles a day, roughly 12% of them trucks, projected to reach 2,108 by 2040. The structure is 73 ft (22.3 m) long and 43 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesSH 71 Ml
CrossesLake Canal
Location3.2 MI No of JCT US 50 Ml
RouteState Highway 71C
Coordinates38.10993, -103.74754
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
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 rating64.3 US tons
Inventory rating50 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length73 ft (22.3 m)
Longest span67 ft (20.4 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2020)
Projected traffic2,108 by 2040
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 71 Ml over Lake Canal built?

It was built in 2018, making it 7 years old in 2025.

What condition is SH 71 Ml over Lake 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 January 2024.

How much traffic does SH 71 Ml over Lake Canal carry?

About 1,700 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is SH 71 Ml over Lake Canal?

The structure is 73 ft (22.3 m) long with a longest span of 67 ft (20.4 m) and a deck 43 ft wide.

Who owns SH 71 Ml over Lake Canal?

It is owned by the State Highway Agency.