US Bridges

Canterberry Parkwa over Sulphur Gulch | Sulphur

Fair

Douglas County, Colorado · Just S of Canterberry Tl · Structure no. PAR CANTBRY-0.3

Built
1998
27 years old
Condition
Fair
inspected February 2025
Type
Frame
Concrete
Length
104 ft
4 main spans
Daily traffic
6,259
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Canterberry Parkwa over Sulphur Gulch | Sulphur is a concrete frame carrying Canterberry Parkwa over Sulphur Gulch | Sulphur 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 6,259 vehicles a day, roughly 4% of them trucks, projected to reach 8,387 by 2041. The structure is 104 ft (31.6 m) long and 89 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCanterberry Parkwa
CrossesSulphur Gulch | Sulphur
LocationJust S of Canterberry Tl
RouteCity Street 0
Coordinates39.51379, -104.72492
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
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 geometry4: Meets minimum tolerable limits to be left in place as is
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 typeFrame
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length104 ft (31.6 m)
Longest span24 ft (7.3 m)
Deck width89 ft (27 m)
Roadway width53 ft (16.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,259 (2021)
Projected traffic8,387 by 2041
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$450,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Canterberry Parkwa over Sulphur Gulch | Sulphur built?

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

What condition is Canterberry Parkwa over Sulphur Gulch | Sulphur 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 Parkwa over Sulphur Gulch | Sulphur carry?

About 6,259 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Canterberry Parkwa over Sulphur Gulch | Sulphur?

The structure is 104 ft (31.6 m) long with a longest span of 24 ft (7.3 m) and a deck 89 ft wide.

Who owns Canterberry Parkwa over Sulphur Gulch | Sulphur?

It is owned by the Town or Township Highway Agency.