US Bridges

W Quincy Avenue over Southwesterly Gulches

Fair

Denver County, Colorado · .35 MI W Sheridan Blvd · Structure no. D-26-SWG-005

Built
1986
39 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
11,115
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

W Quincy Avenue over Southwesterly Gulches is a concrete culvert carrying W Quincy Avenue over Southwesterly Gulches in Denver County, Colorado. It was built in 1986, so it is 39 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 11,115 vehicles a day, roughly 6% of them trucks, projected to reach 12,337 by 2041. The structure is 30 ft (9 m) long and 149 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesW Quincy Avenue
CrossesSouthwesterly Gulches
Location.35 MI W Sheridan Blvd
RouteCity Street 0
CountyDenver County
StateColorado
Coordinates39.63885, -105.06055
Functional classUrban Minor Arterial

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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating108.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9 m)
Longest span14 ft (4.3 m)
Deck width149 ft (45.5 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,115 (2021)
Projected traffic12,337 by 2041
Trucks6%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 W Quincy Avenue over Southwesterly Gulches built?

It was built in 1986, making it 39 years old in 2025.

What condition is W Quincy Avenue over Southwesterly Gulches 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 December 2024.

How much traffic does W Quincy Avenue over Southwesterly Gulches carry?

About 11,115 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is W Quincy Avenue over Southwesterly Gulches?

The structure is 30 ft (9 m) long with a longest span of 14 ft (4.3 m) and a deck 149 ft wide.

Who owns W Quincy Avenue over Southwesterly Gulches?

It is owned by the City or Municipal Highway Agency.