US Bridges

County Road 12 over I 76 Ml

Fair

Morgan County, Colorado · 6.9 MI East of JCT SH 34 · Structure no. D-21-Q

Built
1978
47 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
248 ft
2 main spans
Daily traffic
1,104
2023 count
Owner
State
State Highway Agency

About this bridge

County Road 12 over I 76 Ml is a steel continuous stringer/multi-beam or girder carrying County Road 12 over I 76 Ml in Morgan County, Colorado. It was built in 1978, so it is 47 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 1,104 vehicles a day, roughly 10% of them trucks, projected to reach 1,402 by 2042. The structure is 248 ft (75.7 m) long and 40 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesCounty Road 12
CrossesI 76 Ml
Location6.9 MI East of JCT SH 34
RouteCounty Highway 0
CountyMorgan County
StateColorado
Coordinates40.24261, -103.9242
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
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 alignment7: Better than present minimum criteria
Operating rating57.9 US tons
Inventory rating34.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length248 ft (75.7 m)
Longest span131 ft (39.9 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,104 (2023)
Projected traffic1,402 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed14.3 mi (23 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 12 over I 76 Ml built?

It was built in 1978, making it 47 years old in 2025.

What condition is County Road 12 over I 76 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 2025.

How much traffic does County Road 12 over I 76 Ml carry?

About 1,104 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County Road 12 over I 76 Ml?

The structure is 248 ft (75.7 m) long with a longest span of 131 ft (39.9 m) and a deck 40 ft wide.

Who owns County Road 12 over I 76 Ml?

It is owned by the State Highway Agency.