US Bridges

US 85 Ml over SH 52 Ml

Good

Weld County, Colorado · In Fort Lupton · Structure no. D-17-DE

Built
1974
51 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
148 ft
1 main span
Daily traffic
24,000
2020 count
Owner
State
State Highway Agency

About this bridge

US 85 Ml over SH 52 Ml is a prestressed concrete box beam or girders - multiple carrying US 85 Ml over SH 52 Ml in Weld County, Colorado. It was built in 1974, so it is 51 years old, older 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 24,000 vehicles a day, roughly 10% of them trucks, projected to reach 31,200 by 2040. The structure is 148 ft (45 m) long and 89 ft wide.

CarriesUS 85 Ml
CrossesSH 52 Ml
LocationIn Fort Lupton
RouteU.S. Route 85C
Coordinates40.07991, -104.81953
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.5 US tons
Inventory rating34 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length148 ft (45 m)
Longest span145 ft (44.2 m)
Deck width89 ft (27 m)
Roadway width84 ft (25.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,000 (2020)
Projected traffic31,200 by 2040
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 US 85 Ml over SH 52 Ml built?

It was built in 1974, making it 51 years old in 2025.

What condition is US 85 Ml over SH 52 Ml 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 August 2023.

How much traffic does US 85 Ml over SH 52 Ml carry?

About 24,000 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is US 85 Ml over SH 52 Ml?

The structure is 148 ft (45 m) long with a longest span of 145 ft (44.2 m) and a deck 89 ft wide.

Who owns US 85 Ml over SH 52 Ml?

It is owned by the State Highway Agency.