US Bridges

I 76 Ml over CO RD 1

Fair

Morgan County, Colorado · 3 MI SW of Wiggins · Structure no. D-20-G_MINOR

Built
1958
67 years old, rebuilt 1992
Condition
Fair
inspected February 2025
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
14,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 76 Ml over CO RD 1 is a concrete culvert carrying I 76 Ml over CO RD 1 in Morgan County, Colorado. It was built in 1958 and reconstructed in 1992, so it is 67 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 14,000 vehicles a day, roughly 19% of them trucks, projected to reach 19,740 by 2040. The structure is 20 ft (6.1 m) long and 141 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 76 Ml
CrossesCO RD 1
Location3 MI SW of Wiggins
RouteInterstate 76A
Coordinates40.23198, -104.1314
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Culvert6 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.8 US tons
Inventory rating63.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width141 ft (43 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,000 (2020)
Projected traffic19,740 by 2040
Trucks19%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I 76 Ml over CO RD 1 built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1992.

What condition is I 76 Ml over CO RD 1 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 I 76 Ml over CO RD 1 carry?

About 14,000 vehicles per day (2020 count), of which roughly 19% are trucks.

How long is I 76 Ml over CO RD 1?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 141 ft wide.

Who owns I 76 Ml over CO RD 1?

It is owned by the State Highway Agency.