US Bridges

US 6 Ml over I 76 Ml

Fair

Morgan County, Colorado · At JCT of I-76 · Structure no. D-20-AC

Built
1959
66 years old
Condition
Fair
inspected March 2023
Type
Tee Beam
Concrete Continuous
Length
226 ft
4 main spans
Daily traffic
1,300
2020 count
Owner
State
State Highway Agency

About this bridge

US 6 Ml over I 76 Ml is a concrete continuous tee beam carrying US 6 Ml over I 76 Ml in Morgan County, Colorado. It was built in 1959, so it is 66 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 1,300 vehicles a day, roughly 9% of them trucks, projected to reach 1,560 by 2040. The structure is 226 ft (69 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 6 Ml
CrossesI 76 Ml
LocationAt JCT of I-76
RouteU.S. Route 6I
Coordinates40.23218, -104.09352
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.3 US tons
Inventory rating43.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length226 ft (69 m)
Longest span66 ft (20 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2020)
Projected traffic1,560 by 2040
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
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$392,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 6 Ml over I 76 Ml built?

It was built in 1959, making it 66 years old in 2025.

What condition is US 6 Ml 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 March 2023.

How much traffic does US 6 Ml over I 76 Ml carry?

About 1,300 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is US 6 Ml over I 76 Ml?

The structure is 226 ft (69 m) long with a longest span of 66 ft (20 m) and a deck 32 ft wide.

Who owns US 6 Ml over I 76 Ml?

It is owned by the State Highway Agency.