US Bridges

Canterberry Trail over Sulphur Gulch

Fair

Douglas County, Colorado · 0.1 MI S of Glenmoor DR · Structure no. PAR CANTTRL-0.1

Built
1998
27 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
2,280
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Canterberry Trail over Sulphur Gulch is a concrete culvert carrying Canterberry Trail over Sulphur Gulch in Douglas County, Colorado. It was built in 1998, so it is 27 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 2,280 vehicles a day, roughly 2% of them trucks, projected to reach 3,055 by 2041. The structure is 30 ft (9.1 m) long and 108 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCanterberry Trail
CrossesSulphur Gulch
Location0.1 MI S of Glenmoor DR
RouteCity Street 0
Coordinates39.51138, -104.71172
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 protection7 GoodSome minor problems.
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span14 ft (4.2 m)
Deck width108 ft (33 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,280 (2021)
Projected traffic3,055 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Canterberry Trail over Sulphur Gulch built?

It was built in 1998, making it 27 years old in 2025.

What condition is Canterberry Trail over Sulphur Gulch 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 Canterberry Trail over Sulphur Gulch carry?

About 2,280 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Canterberry Trail over Sulphur Gulch?

The structure is 30 ft (9.1 m) long with a longest span of 14 ft (4.2 m) and a deck 108 ft wide.

Who owns Canterberry Trail over Sulphur Gulch?

It is owned by the Town or Township Highway Agency.