US Bridges

County Road 15 over Big Dry Creek

Good

Weld County, Colorado · 0.6 Mi. N. of Co. Rd. 2 · Structure no. WEL015.0_002.0A

Built
2003
22 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
86
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 15 over Big Dry Creek is a steel stringer/multi-beam or girder carrying County Road 15 over Big Dry Creek in Weld County, Colorado. It was built in 2003, so it is 22 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 86 vehicles a day, roughly 35% of them trucks, projected to reach 122 by 2042. The structure is 36 ft (11.1 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty Road 15
CrossesBig Dry Creek
Location0.6 Mi. N. of Co. Rd. 2
RouteCounty Highway 0
Coordinates40.00882, -104.92406
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.2 US tons
Inventory rating38.4 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length36 ft (11.1 m)
Longest span35 ft (10.6 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic86 (2022)
Projected traffic122 by 2042
Trucks35%
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 15 over Big Dry Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is County Road 15 over Big Dry 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 June 2024.

How much traffic does County Road 15 over Big Dry Creek carry?

About 86 vehicles per day (2022 count), of which roughly 35% are trucks.

How long is County Road 15 over Big Dry Creek?

The structure is 36 ft (11.1 m) long with a longest span of 35 ft (10.6 m) and a deck 32 ft wide.

Who owns County Road 15 over Big Dry Creek?

It is owned by the County Highway Agency.