US Bridges

US 40 Ml over Clear Creek

Fair

Clear Creek County, Colorado · W. Base of Floyd Hill · Structure no. F-15-CN

Built
1973
52 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
167 ft
2 main spans
Daily traffic
2,100
2020 count
Owner
State
State Highway Agency

About this bridge

US 40 Ml over Clear Creek is a prestressed concrete stringer/multi-beam or girder carrying US 40 Ml over Clear Creek in Clear Creek County, Colorado. It was built in 1973, so it is 52 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 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 2,100 vehicles a day, roughly 6% of them trucks, projected to reach 2,583 by 2040. The structure is 167 ft (50.9 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 40 Ml
CrossesClear Creek
LocationW. Base of Floyd Hill
RouteU.S. Route 40B
Coordinates39.74203, -105.43167
Functional classRural Minor Collector

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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.5 US tons
Inventory rating27.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length167 ft (50.9 m)
Longest span80 ft (24.4 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2020)
Projected traffic2,583 by 2040
Trucks6%
Lanes on structure2
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 40 Ml over Clear Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is US 40 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 April 2023.

How much traffic does US 40 Ml over Clear Creek carry?

About 2,100 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is US 40 Ml over Clear Creek?

The structure is 167 ft (50.9 m) long with a longest span of 80 ft (24.4 m) and a deck 34 ft wide.

Who owns US 40 Ml over Clear Creek?

It is owned by the State Highway Agency.