US Bridges

70th Avenue over Farmers Highline Canal |

Good

Jefferson County, Colorado · 0.3 MI E of Quaker Street · Structure no. ARVA-70-0.01-01

Built
1993
32 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
231
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

70th Avenue over Farmers Highline Canal | is a concrete culvert carrying 70th Avenue over Farmers Highline Canal | in Jefferson County, Colorado. It was built in 1993, so it is 32 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 231 vehicles a day, roughly 2% of them trucks, projected to reach 266 by 2041. The structure is 22 ft (6.6 m) long and 108 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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Carries70th Avenue
CrossesFarmers Highline Canal |
Location0.3 MI E of Quaker Street
RouteCity Street 0
CountyJefferson County
StateColorado
Coordinates39.82336, -105.17871
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
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 typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length22 ft (6.6 m)
Longest span22 ft (6.6 m)
Deck width108 ft (32.8 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic231 (2021)
Projected traffic266 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 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 70th Avenue over Farmers Highline Canal | built?

It was built in 1993, making it 32 years old in 2025.

What condition is 70th Avenue over Farmers Highline Canal | in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does 70th Avenue over Farmers Highline Canal | carry?

About 231 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is 70th Avenue over Farmers Highline Canal |?

The structure is 22 ft (6.6 m) long with a longest span of 22 ft (6.6 m) and a deck 108 ft wide.

Who owns 70th Avenue over Farmers Highline Canal |?

It is owned by the City or Municipal Highway Agency.