US Bridges

US 6 Ml over UP RR

Good

Mesa County, Colorado · E. Edge of Clifton · Structure no. H-03-BW

Built
1999
26 years old
Condition
Good
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
241 ft
3 main spans
Daily traffic
6,900
2020 count
Owner
State
State Highway Agency

About this bridge

US 6 Ml over UP RR is a prestressed concrete continuous box beam or girders - multiple carrying US 6 Ml over UP RR in Mesa County, Colorado. It was built in 1999, so it is 26 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 6,900 vehicles a day, roughly 4% of them trucks, projected to reach 7,383 by 2040. The structure is 241 ft (73.4 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 6 Ml
CrossesUP RR
LocationE. Edge of Clifton
RouteU.S. Route 6C
Coordinates39.09138, -108.43605
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating53.8 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length241 ft (73.4 m)
Longest span119 ft (36.4 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,900 (2020)
Projected traffic7,383 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 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 6 Ml over UP RR built?

It was built in 1999, making it 26 years old in 2025.

What condition is US 6 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 February 2025.

How much traffic does US 6 Ml over UP RR carry?

About 6,900 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is US 6 Ml over UP RR?

The structure is 241 ft (73.4 m) long with a longest span of 119 ft (36.4 m) and a deck 42 ft wide.

Who owns US 6 Ml over UP RR?

It is owned by the State Highway Agency.