US Bridges

US 24 Ml over Arkansas River

Fair

Chaffee County, Colorado · Johnson Village · Structure no. I-12-T

Built
1937
88 years old
Condition
Fair
inspected December 2023
Type
Truss - Deck
Steel
Length
353 ft
1 main span
Daily traffic
8,300
2020 count
Owner
State
State Highway Agency

About this bridge

US 24 Ml over Arkansas River is a steel truss - deck carrying US 24 Ml over Arkansas River in Chaffee County, Colorado. It was built in 1937, 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 fair condition with a lowest component rating of 5 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 8,300 vehicles a day, roughly 8% of them trucks, projected to reach 10,624 by 2040. The structure is 353 ft (107.6 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesUS 24 Ml
CrossesArkansas River
LocationJohnson Village
RouteU.S. Route 24A
Coordinates38.81301, -106.10466
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating23.5 US tons

Structure

Structure typeTruss - Deck
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+5 approach)
Design loadHS 20
Structure length353 ft (107.6 m)
Longest span125 ft (38.1 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,300 (2020)
Projected traffic10,624 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on 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 1937, making it 88 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 December 2023.

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

About 8,300 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is US 24 Ml over Arkansas River?

The structure is 353 ft (107.6 m) long with a longest span of 125 ft (38.1 m) and a deck 33 ft wide.

Who owns US 24 Ml over Arkansas River?

It is owned by the State Highway Agency.