US Bridges

80th Avenue over Farmers Highline Canal

Fair

Jefferson County, Colorado · .15 MI E of Kipling ST · Structure no. ARVA-80-0.15-01

Built
1930
95 years old, rebuilt 1980
Condition
Fair
inspected March 2023
Type
Tee Beam
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
16,690
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

80th Avenue over Farmers Highline Canal is a prestressed concrete tee beam carrying 80th Avenue over Farmers Highline Canal in Jefferson County, Colorado. It was built in 1930 and reconstructed in 1980, so it is 95 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 16,690 vehicles a day, roughly 6% of them trucks, projected to reach 19,194 by 2041. The structure is 24 ft (7.3 m) long and 91 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries80th Avenue
CrossesFarmers Highline Canal
Location.15 MI E of Kipling ST
RouteCity Street 0
CountyJefferson County
StateColorado
Coordinates39.84182, -105.10822
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 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 rating25.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span21 ft (6.3 m)
Deck width91 ft (27.7 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,690 (2021)
Projected traffic19,194 by 2041
Trucks6%
Lanes on structure5
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

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 80th Avenue over Farmers Highline Canal built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1980.

What condition is 80th Avenue over Farmers 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 March 2023.

How much traffic does 80th Avenue over Farmers Highline Canal carry?

About 16,690 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is 80th Avenue over Farmers Highline Canal?

The structure is 24 ft (7.3 m) long with a longest span of 21 ft (6.3 m) and a deck 91 ft wide.

Who owns 80th Avenue over Farmers Highline Canal?

It is owned by the City or Municipal Highway Agency.