US Bridges

Mill Road over US 6 Ml

Good

Adams County, Colorado · Commerce City N of 60th · Structure no. E-17-MZ

Built
1993
32 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
270 ft
2 main spans
Daily traffic
9,277
2024 count
Owner
State
State Highway Agency

About this bridge

Mill Road over US 6 Ml is a prestressed concrete continuous stringer/multi-beam or girder carrying Mill Road over US 6 Ml in Adams County, Colorado. It was built in 1993, so it is 32 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 9,277 vehicles a day, roughly 12% of them trucks, projected to reach 12,060 by 2044. The structure is 270 ft (82.3 m) long and 39 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesMill Road
CrossesUS 6 Ml
LocationCommerce City N of 60th
RouteCity Street 0
Coordinates39.81404, -104.93182
Functional classUrban Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating92.6 US tons
Inventory rating32.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length270 ft (82.3 m)
Longest span132 ft (40.3 m)
Deck width39 ft (11.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,277 (2024)
Projected traffic12,060 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed0.6 mi (1 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 Mill Road over US 6 Ml built?

It was built in 1993, making it 32 years old in 2025.

What condition is Mill Road over US 6 Ml 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 2024.

How much traffic does Mill Road over US 6 Ml carry?

About 9,277 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Mill Road over US 6 Ml?

The structure is 270 ft (82.3 m) long with a longest span of 132 ft (40.3 m) and a deck 39 ft wide.

Who owns Mill Road over US 6 Ml?

It is owned by the State Highway Agency.