US Bridges

US 24 Ml over Shields Gulch

Good

Chaffee County, Colorado · 5.5 MI NE of JCT US 285 · Structure no. I-12-AA

Built
1937
88 years old, rebuilt 2016
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
34 ft
3 main spans
Daily traffic
6,700
2020 count
Owner
State
State Highway Agency

About this bridge

US 24 Ml over Shields Gulch is a concrete culvert carrying US 24 Ml over Shields Gulch in Chaffee County, Colorado. It was built in 1937 and reconstructed in 2016, so it is 88 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 6,700 vehicles a day, roughly 10% of them trucks, projected to reach 8,643 by 2040. The structure is 34 ft (10.4 m) long and 97 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesUS 24 Ml
CrossesShields Gulch
Location5.5 MI NE of JCT US 285
RouteU.S. Route 24A
Coordinates38.83447, -106.02314
Functional classRural Principal Arterial - Other

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 inspectionApril 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 alignment7: Better than present minimum criteria
Operating rating106.8 US tons
Inventory rating96.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length34 ft (10.4 m)
Longest span12 ft (3.7 m)
Deck width97 ft (29.7 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,700 (2020)
Projected traffic8,643 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes

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 US 24 Ml over Shields Gulch built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 2016.

What condition is US 24 Ml over Shields Gulch 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 April 2023.

How much traffic does US 24 Ml over Shields Gulch carry?

About 6,700 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is US 24 Ml over Shields Gulch?

The structure is 34 ft (10.4 m) long with a longest span of 12 ft (3.7 m) and a deck 97 ft wide.

Who owns US 24 Ml over Shields Gulch?

It is owned by the State Highway Agency.