US Bridges

County Road 13 over St. Vrain Creek

Good

Weld County, Colorado · 0.5 MI N of CO RD 26 · Structure no. WEL013.0_026.0A

Built
2004
21 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
206 ft
3 main spans
Daily traffic
29
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

County Road 13 over St. Vrain Creek is a prestressed concrete stringer/multi-beam or girder carrying County Road 13 over St. Vrain Creek in Weld County, Colorado. It was built in 2004, so it is 21 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 29 vehicles a day, roughly 26% of them trucks, projected to reach 41 by 2042. The structure is 206 ft (62.8 m) long and 68 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty Road 13
CrossesSt. Vrain Creek
Location0.5 MI N of CO RD 26
RouteCounty Highway 0
Coordinates40.18217, -104.94192
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 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 rating59.3 US tons
Inventory rating32.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length206 ft (62.8 m)
Longest span73 ft (22.3 m)
Deck width68 ft (20.7 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2022)
Projected traffic41 by 2042
Trucks26%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 13 over St. Vrain Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is County Road 13 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 March 2024.

How much traffic does County Road 13 over St. Vrain Creek carry?

About 29 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is County Road 13 over St. Vrain Creek?

The structure is 206 ft (62.8 m) long with a longest span of 73 ft (22.3 m) and a deck 68 ft wide.

Who owns County Road 13 over St. Vrain Creek?

It is owned by the Town or Township Highway Agency.