US Bridges

SH 52 Ml over S Platte River Ovrflw

Fair

Weld County, Colorado · .5 MI W of Ft Lupton · Structure no. D-17-BH

Built
1957
68 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
13,000
2020 count
Owner
State
State Highway Agency

About this bridge

SH 52 Ml over S Platte River Ovrflw is a concrete culvert carrying SH 52 Ml over S Platte River Ovrflw in Weld County, Colorado. It was built in 1957, so it is 68 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 13,000 vehicles a day, roughly 10% of them trucks, projected to reach 18,330 by 2040. The structure is 21 ft (6.4 m) long and 50 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSH 52 Ml
CrossesS Platte River Ovrflw
Location.5 MI W of Ft Lupton
RouteState Highway 52A
Coordinates40.08006, -104.82707
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width50 ft (15.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2020)
Projected traffic18,330 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
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 SH 52 Ml over S Platte River Ovrflw built?

It was built in 1957, making it 68 years old in 2025.

What condition is SH 52 Ml over S Platte River Ovrflw 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 52 Ml over S Platte River Ovrflw carry?

About 13,000 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is SH 52 Ml over S Platte River Ovrflw?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 50 ft wide.

Who owns SH 52 Ml over S Platte River Ovrflw?

It is owned by the State Highway Agency.