US Bridges

I 76 Ml over South Platte River

Good

Adams County, Colorado · 1.9 MI SW of JCT US 85 · Structure no. E-17-AET

Built
2013
12 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
360 ft
3 main spans
Daily traffic
42,000
2020 count
Owner
State
State Highway Agency

About this bridge

I 76 Ml over South Platte River is a prestressed concrete continuous stringer/multi-beam or girder carrying I 76 Ml over South Platte River in Adams County, Colorado. It was built in 2013, so it is 12 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 42,000 vehicles a day, roughly 13% of them trucks, projected to reach 61,740 by 2040. The structure is 360 ft (109.7 m) long and 137 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 76 Ml
CrossesSouth Platte River
Location1.9 MI SW of JCT US 85
RouteInterstate 76A
Coordinates39.82598, -104.94947
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.2 US tons
Inventory rating38.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length360 ft (109.7 m)
Longest span120 ft (36.6 m)
Deck width137 ft (41.8 m)
Roadway width132 ft (40.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,000 (2020)
Projected traffic61,740 by 2040
Trucks13%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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$2.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I 76 Ml over South Platte River built?

It was built in 2013, making it 12 years old in 2025.

What condition is I 76 Ml over South Platte River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does I 76 Ml over South Platte River carry?

About 42,000 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is I 76 Ml over South Platte River?

The structure is 360 ft (109.7 m) long with a longest span of 120 ft (36.6 m) and a deck 137 ft wide.

Who owns I 76 Ml over South Platte River?

It is owned by the State Highway Agency.