US Bridges

County Road 27 over I 70 Ml

Fair

Mesa County, Colorado · 0.8 MI W of Horizon Drive · Structure no. H-02-ET

Built
1965
60 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete Continuous
Length
190 ft
4 main spans
Daily traffic
3,474
2022 count
Owner
State
State Highway Agency

About this bridge

County Road 27 over I 70 Ml is a concrete continuous tee beam carrying County Road 27 over I 70 Ml in Mesa County, Colorado. It was built in 1965, so it is 60 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 3,474 vehicles a day, roughly 7% of them trucks, projected to reach 4,065 by 2042. The structure is 190 ft (57.9 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty Road 27
CrossesI 70 Ml
Location0.8 MI W of Horizon Drive
RouteCounty Highway 0
Coordinates39.11544, -108.55227
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating54.1 US tons
Inventory rating32.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length190 ft (57.9 m)
Longest span54 ft (16.5 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,474 (2022)
Projected traffic4,065 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 County Road 27 over I 70 Ml built?

It was built in 1965, making it 60 years old in 2025.

What condition is County Road 27 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 February 2024.

How much traffic does County Road 27 over I 70 Ml carry?

About 3,474 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is County Road 27 over I 70 Ml?

The structure is 190 ft (57.9 m) long with a longest span of 54 ft (16.5 m) and a deck 28 ft wide.

Who owns County Road 27 over I 70 Ml?

It is owned by the State Highway Agency.