US Bridges

County Road 23 over Dry Creek

Good

Larimer County, Colorado · 0.6 MI N of CO RD 6 · Structure no. LR23-0.6-6

Built
1988
37 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
2,798
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 23 over Dry Creek is a concrete culvert carrying County Road 23 over Dry Creek in Larimer County, Colorado. It was built in 1988, so it is 37 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 2,798 vehicles a day, roughly 19% of them trucks, projected to reach 3,497 by 2043. The structure is 21 ft (6.3 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 23
CrossesDry Creek
Location0.6 MI N of CO RD 6
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.29855, -105.15028
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.3 US tons
Inventory rating41.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width38 ft (11.6 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,798 (2023)
Projected traffic3,497 by 2043
Trucks19%
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 23 over Dry Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is County Road 23 over 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 May 2023.

How much traffic does County Road 23 over Dry Creek carry?

About 2,798 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is County Road 23 over Dry Creek?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 38 ft wide.

Who owns County Road 23 over Dry Creek?

It is owned by the County Highway Agency.