US Bridges

SH 39 Ml over I 76 Ml

Fair

Morgan County, Colorado · 0.2 MI No of JCT SH 6 · Structure no. D-20-AH

Built
1959
66 years old
Condition
Fair
inspected January 2024
Type
Tee Beam
Concrete Continuous
Length
232 ft
4 main spans
Daily traffic
2,300
2020 count
Owner
State
State Highway Agency

About this bridge

SH 39 Ml over I 76 Ml is a concrete continuous tee beam carrying SH 39 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 5 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 2,300 vehicles a day, roughly 15% of them trucks, projected to reach 3,358 by 2040. The structure is 232 ft (70.6 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSH 39 Ml
CrossesI 76 Ml
Location0.2 MI No of JCT SH 6
RouteState Highway 39A
Coordinates40.24567, -104.05572
Functional classRural Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.1 US tons
Inventory rating41.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckOther
Main spans4
Design loadHS 20
Structure length232 ft (70.6 m)
Longest span67 ft (20.3 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2020)
Projected traffic3,358 by 2040
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed0.6 mi (1 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.2 million (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 39 Ml over I 76 Ml built?

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

What condition is SH 39 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 January 2024.

How much traffic does SH 39 Ml over I 76 Ml carry?

About 2,300 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is SH 39 Ml over I 76 Ml?

The structure is 232 ft (70.6 m) long with a longest span of 67 ft (20.3 m) and a deck 34 ft wide.

Who owns SH 39 Ml over I 76 Ml?

It is owned by the State Highway Agency.