US Bridges

County Road 1 over ST Vrain Creek

Good

Weld County, Colorado · 0.5 MI South of SH119 · Structure no. BC-901-22.1-SVA

Built
2014
11 years old
Condition
Good
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
280 ft
3 main spans
Daily traffic
9,344
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 1 over ST Vrain Creek is a prestressed concrete continuous box beam or girders - multiple carrying County Road 1 over ST Vrain Creek in Weld County, Colorado. It was built in 2014, so it is 11 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 9,344 vehicles a day, roughly 14% of them trucks, projected to reach 11,213 by 2043. The structure is 280 ft (85.2 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty Road 1
CrossesST Vrain Creek
Location0.5 MI South of SH119
RouteCounty Highway 0
Coordinates40.15161, -105.05527
Functional classRural Major Collector

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating28.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length280 ft (85.2 m)
Longest span89 ft (27 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,344 (2023)
Projected traffic11,213 by 2043
Trucks14%
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Road 1 over ST Vrain Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is County Road 1 over ST Vrain Creek 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 February 2025.

How much traffic does County Road 1 over ST Vrain Creek carry?

About 9,344 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is County Road 1 over ST Vrain Creek?

The structure is 280 ft (85.2 m) long with a longest span of 89 ft (27 m) and a deck 37 ft wide.

Who owns County Road 1 over ST Vrain Creek?

It is owned by the County Highway Agency.