US Bridges

Quincy Ave over Highline Canal

Fair

Arapahoe County, Colorado · 0.26 MI E of Colo Blvd · Structure no. CHRY-02-0.26-02

Built
1935
90 years old, rebuilt 1983
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
1 main span
Daily traffic
5,061
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Quincy Ave over Highline Canal is a steel stringer/multi-beam or girder carrying Quincy Ave over Highline Canal in Arapahoe County, Colorado. It was built in 1935 and reconstructed in 1983, so it is 90 years old, older 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 5,061 vehicles a day, roughly 6% of them trucks, projected to reach 6,175 by 2041. The structure is 61 ft (18.6 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesQuincy Ave
CrossesHighline Canal
Location0.26 MI E of Colo Blvd
RouteCity Street 0
CountyArapahoe County
StateColorado
Coordinates39.63852, -104.93617
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating56.5 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span53 ft (16.1 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,061 (2021)
Projected traffic6,175 by 2041
Trucks6%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Quincy Ave over Highline Canal built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1983.

What condition is Quincy Ave over Highline Canal 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 September 2023.

How much traffic does Quincy Ave over Highline Canal carry?

About 5,061 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Quincy Ave over Highline Canal?

The structure is 61 ft (18.6 m) long with a longest span of 53 ft (16.1 m) and a deck 26 ft wide.

Who owns Quincy Ave over Highline Canal?

It is owned by the City or Municipal Highway Agency.