US Bridges

County Road 182.1 over I 70 Ml

Fair

Clear Creek County, Colorado · 3.8 MI E of JCT US 6 · Structure no. F-15-CA

Built
1973
52 years old
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
242 ft
2 main spans
Daily traffic
3,400
2024 count
Owner
State
State Highway Agency

About this bridge

County Road 182.1 over I 70 Ml is a concrete continuous box beam or girders - multiple carrying County Road 182.1 over I 70 Ml 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 3,400 vehicles a day, roughly 8% of them trucks, projected to reach 4,249 by 2044. The structure is 242 ft (73.8 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCounty Road 182.1
CrossesI 70 Ml
Location3.8 MI E of JCT US 6
RouteCounty Highway 0
Coordinates39.72159, -105.40962
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating96.9 US tons
Inventory rating57.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length242 ft (73.8 m)
Longest span123 ft (37.5 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2024)
Projected traffic4,249 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.1 mi (5 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 County Road 182.1 over I 70 Ml built?

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

What condition is County Road 182.1 over I 70 Ml 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 January 2024.

How much traffic does County Road 182.1 over I 70 Ml carry?

About 3,400 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is County Road 182.1 over I 70 Ml?

The structure is 242 ft (73.8 m) long with a longest span of 123 ft (37.5 m) and a deck 43 ft wide.

Who owns County Road 182.1 over I 70 Ml?

It is owned by the State Highway Agency.