US Bridges

County Road 54 over South Platte River

Fair

Weld County, Colorado · 0.1 MI E of CO RD 41 · Structure no. WEL054.0-041.0A

Built
1973
52 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
540 ft
11 main spans
Daily traffic
2,391
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 54 over South Platte River is a prestressed concrete tee beam carrying County Road 54 over South Platte River in Weld County, Colorado. It was built in 1973, so it is 52 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 2,391 vehicles a day, roughly 31% of them trucks, projected to reach 3,395 by 2043. The structure is 540 ft (164.6 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 54
CrossesSouth Platte River
Location0.1 MI E of CO RD 41
RouteCounty Highway 0
CountyWeld County
StateColorado
Coordinates40.37744, -104.67505
Functional classUrban Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length540 ft (164.6 m)
Longest span48 ft (14.6 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,391 (2023)
Projected traffic3,395 by 2043
Trucks31%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County Road 54 over South Platte River built?

It was built in 1973, making it 52 years old in 2025.

What condition is County Road 54 over South Platte River 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 June 2024.

How much traffic does County Road 54 over South Platte River carry?

About 2,391 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is County Road 54 over South Platte River?

The structure is 540 ft (164.6 m) long with a longest span of 48 ft (14.6 m) and a deck 32 ft wide.

Who owns County Road 54 over South Platte River?

It is owned by the County Highway Agency.