US Bridges

US 6 Ml over Clear Creek

Fair

Clear Creek County, Colorado · US 6 over Clear Creek · Structure no. F-15-AA

Built
1998
27 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
76 ft
1 main span
Daily traffic
5,600
2020 count
Owner
State
State Highway Agency

About this bridge

US 6 Ml over Clear Creek is a prestressed concrete box beam or girders - multiple carrying US 6 Ml over Clear Creek in Clear Creek County, Colorado. It was built in 1998, so it is 27 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 5,600 vehicles a day, roughly 9% of them trucks, projected to reach 6,104 by 2040. The structure is 76 ft (23.2 m) long and 68 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 6 Ml
CrossesClear Creek
LocationUS 6 over Clear Creek
RouteU.S. Route 6G
Coordinates39.74621, -105.39829
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 protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86.1 US tons
Inventory rating24 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length76 ft (23.2 m)
Longest span73 ft (22.1 m)
Deck width68 ft (20.7 m)
Roadway width56 ft (17.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,600 (2020)
Projected traffic6,104 by 2040
Trucks9%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 US 6 Ml over Clear Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is US 6 Ml over Clear Creek 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 November 2023.

How much traffic does US 6 Ml over Clear Creek carry?

About 5,600 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is US 6 Ml over Clear Creek?

The structure is 76 ft (23.2 m) long with a longest span of 73 ft (22.1 m) and a deck 68 ft wide.

Who owns US 6 Ml over Clear Creek?

It is owned by the State Highway Agency.