US Bridges

US 24 Ml over Arkansas River

Fair

Lake County, Colorado · 4 MI South of JCT SH 300 · Structure no. H-11-AF

Built
1995
30 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
126 ft
1 main span
Daily traffic
4,200
2020 count
Owner
State
State Highway Agency

About this bridge

US 24 Ml over Arkansas River is a prestressed concrete stringer/multi-beam or girder carrying US 24 Ml over Arkansas River 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 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 4,200 vehicles a day, roughly 6% of them trucks, projected to reach 4,746 by 2040. The structure is 126 ft (38.4 m) long and 43 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

CarriesUS 24 Ml
CrossesArkansas River
Location4 MI South of JCT SH 300
RouteU.S. Route 24A
Coordinates39.16836, -106.32404
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating84.2 US tons
Inventory rating35.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length126 ft (38.4 m)
Longest span123 ft (37.6 m)
Deck width43 ft (13 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
CrossesWaterway
Detour if closed62.1 mi (100 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 Arkansas River built?

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

What condition is US 24 Ml over Arkansas River 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 October 2024.

How much traffic does US 24 Ml over Arkansas River carry?

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

How long is US 24 Ml over Arkansas River?

The structure is 126 ft (38.4 m) long with a longest span of 123 ft (37.6 m) and a deck 43 ft wide.

Who owns US 24 Ml over Arkansas River?

It is owned by the State Highway Agency.