US Bridges

Broadway over Highline Canal

FairPosted for load

Arapahoe County, Colorado · 0.3 MI S of Arapahoe RD · Structure no. CENT 15-1.7

Built
1966
59 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
1,796
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Broadway over Highline Canal is a prestressed concrete tee beam carrying Broadway over Highline Canal in Arapahoe County, Colorado. It was built in 1966, so it is 59 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,796 vehicles a day, roughly 5% of them trucks, projected to reach 2,191 by 2041. The structure is 32 ft (9.8 m) long and 93 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBroadway
CrossesHighline Canal
Location0.3 MI S of Arapahoe RD
RouteCity Street 0
Coordinates39.5905, -104.98817
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width93 ft (28.3 m)
Roadway width85 ft (25.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,796 (2021)
Projected traffic2,191 by 2041
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Broadway over Highline Canal built?

It was built in 1966, making it 59 years old in 2025.

What condition is Broadway 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 October 2023.

How much traffic does Broadway over Highline Canal carry?

About 1,796 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Broadway over Highline Canal?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 93 ft wide.

Who owns Broadway over Highline Canal?

It is owned by the City or Municipal Highway Agency.