US Bridges

US 40 Ml over Red Dirt Creek

Good

Grand County, Colorado · _ · Structure no. D-11-W

Built
1994
31 years old
Condition
Good
inspected October 2022
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
2,100
2018 count
Owner
State
State Highway Agency

About this bridge

US 40 Ml over Red Dirt Creek is a concrete culvert carrying US 40 Ml over Red Dirt Creek in Grand County, Colorado. It was built in 1994, so it is 31 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 2,100 vehicles a day, roughly 13% of them trucks, projected to reach 2,456 by 2038. The structure is 21 ft (6.4 m) long and 254 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesUS 40 Ml
CrossesRed Dirt Creek
Location_
RouteU.S. Route 40A
Coordinates40.16038, -106.41486
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width254 ft (77.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2018)
Projected traffic2,456 by 2038
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 40 Ml over Red Dirt Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is US 40 Ml over Red Dirt 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 October 2022.

How much traffic does US 40 Ml over Red Dirt Creek carry?

About 2,100 vehicles per day (2018 count), of which roughly 13% are trucks.

How long is US 40 Ml over Red Dirt Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 254 ft wide.

Who owns US 40 Ml over Red Dirt Creek?

It is owned by the State Highway Agency.