US Bridges

US 24 Ml over UP RR

Good

Lake County, Colorado · 9 MI S of Leadville · Structure no. H-11-AE

Built
1995
30 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
234 ft
3 main spans
Daily traffic
4,200
2020 count
Owner
State
State Highway Agency

About this bridge

US 24 Ml over UP RR is a prestressed concrete continuous stringer/multi-beam or girder carrying US 24 Ml over UP RR in Lake County, Colorado. It was built in 1995, so it is 30 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 4,200 vehicles a day, roughly 6% of them trucks, projected to reach 4,746 by 2040. The structure is 234 ft (71.3 m) long and 43 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesUS 24 Ml
CrossesUP RR
Location9 MI S of Leadville
RouteU.S. Route 24A
Coordinates39.16574, -106.32557
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.4 US tons
Inventory rating40.3 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length234 ft (71.3 m)
Longest span98 ft (30 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2020)
Projected traffic4,746 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed123.7 mi (199 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 US 24 Ml over UP RR built?

It was built in 1995, making it 30 years old in 2025.

What condition is US 24 Ml over UP RR 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 October 2024.

How much traffic does US 24 Ml over UP RR carry?

About 4,200 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is US 24 Ml over UP RR?

The structure is 234 ft (71.3 m) long with a longest span of 98 ft (30 m) and a deck 43 ft wide.

Who owns US 24 Ml over UP RR?

It is owned by the State Highway Agency.