US Bridges

County Road 18 over Local Drainage

Good

Weld County, Colorado · 0.4 MI W of CR 11 · Structure no. FRD018.0-011.0

Built
2015
10 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete
Length
75 ft
7 main spans
Daily traffic
3,947
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

County Road 18 over Local Drainage is a concrete culvert carrying County Road 18 over Local Drainage in Weld County, Colorado. It was built in 2015, so it is 10 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 3,947 vehicles a day, roughly 12% of them trucks, projected to reach 5,605 by 2042. The structure is 75 ft (22.9 m) long and 94 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCounty Road 18
CrossesLocal Drainage
Location0.4 MI W of CR 11
RouteCity Street 0
CountyWeld County
StateColorado
Coordinates40.11704, -104.96894
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
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 rating106.8 US tons
Inventory rating85.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans7
Design loadHL 93
Structure length75 ft (22.9 m)
Longest span10 ft (3 m)
Deck width94 ft (28.8 m)
Roadway width93 ft (28.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,947 (2023)
Projected traffic5,605 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 18 over Local Drainage built?

It was built in 2015, making it 10 years old in 2025.

What condition is County Road 18 over Local Drainage 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 18 over Local Drainage carry?

About 3,947 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is County Road 18 over Local Drainage?

The structure is 75 ft (22.9 m) long with a longest span of 10 ft (3 m) and a deck 94 ft wide.

Who owns County Road 18 over Local Drainage?

It is owned by the Town or Township Highway Agency.