US Bridges

SH 69 Ml over Antelope Creek

Good

Custer County, Colorado · 9 MI S. Westcliffe · Structure no. L-15-R

Built
2012
13 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete
Length
62 ft
3 main spans
Daily traffic
720
2020 count
Owner
State
State Highway Agency

About this bridge

SH 69 Ml over Antelope Creek is a concrete culvert carrying SH 69 Ml over Antelope Creek in Custer County, Colorado. It was built in 2012, so it is 13 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 720 vehicles a day, roughly 11% of them trucks, projected to reach 965 by 2040. The structure is 62 ft (18.9 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSH 69 Ml
CrossesAntelope Creek
Location9 MI S. Westcliffe
RouteState Highway 69A
Coordinates38.02946, -105.38752
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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.8 US tons
Inventory rating82.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length62 ft (18.9 m)
Longest span20 ft (6.1 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic720 (2020)
Projected traffic965 by 2040
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$240,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 69 Ml over Antelope Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is SH 69 Ml over Antelope Creek 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 January 2025.

How much traffic does SH 69 Ml over Antelope Creek carry?

About 720 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is SH 69 Ml over Antelope Creek?

The structure is 62 ft (18.9 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns SH 69 Ml over Antelope Creek?

It is owned by the State Highway Agency.