US Bridges

Carder Court over Highline Canal | Highlan

Fair

Douglas County, Colorado · 0.25 MI West of US 85 · Structure no. DOU086-00.12A

Built
1995
30 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete
Length
25 ft
1 main span
Daily traffic
1,414
2021 count
Owner
County
County Highway Agency

About this bridge

Carder Court over Highline Canal | Highlan is a concrete culvert carrying Carder Court over Highline Canal | Highlan in Douglas County, Colorado. It was built in 1995, so it is 30 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,414 vehicles a day, roughly 20% of them trucks, projected to reach 1,895 by 2041. The structure is 25 ft (7.6 m) long and 53 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesCarder Court
CrossesHighline Canal | Highlan
Location0.25 MI West of US 85
RouteCounty Highway 0
CountyDouglas County
StateColorado
Coordinates39.55081, -105.04162
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.1 US tons
Inventory rating43.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length25 ft (7.6 m)
Longest span20 ft (6.1 m)
Deck width53 ft (16.3 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,414 (2021)
Projected traffic1,895 by 2041
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Carder Court over Highline Canal | Highlan built?

It was built in 1995, making it 30 years old in 2025.

What condition is Carder Court over Highline Canal | Highlan in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2025.

How much traffic does Carder Court over Highline Canal | Highlan carry?

About 1,414 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is Carder Court over Highline Canal | Highlan?

The structure is 25 ft (7.6 m) long with a longest span of 20 ft (6.1 m) and a deck 53 ft wide.

Who owns Carder Court over Highline Canal | Highlan?

It is owned by the County Highway Agency.