US Bridges

E. 120th Ave over Local Drainage

Fair

Adams County, Colorado · 0.7 MI W of Haysmount RD · Structure no. ADA120-21.3

Built
2007
18 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
2,091
2021 count
Owner
County
County Highway Agency

About this bridge

E. 120th Ave over Local Drainage is a concrete culvert carrying E. 120th Ave over Local Drainage in Adams County, Colorado. It was built in 2007, so it is 18 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 2,091 vehicles a day, projected to reach 2,718 by 2041. The structure is 34 ft (10.3 m) long and 50 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesE. 120th Ave
CrossesLocal Drainage
Location0.7 MI W of Haysmount RD
RouteCounty Highway 0
CountyAdams County
StateColorado
Coordinates39.91393, -104.6532
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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum 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 spans2
Design loadHS 20
Structure length34 ft (10.3 m)
Longest span16 ft (4.9 m)
Deck width50 ft (15.2 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,091 (2021)
Projected traffic2,718 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 E. 120th Ave over Local Drainage built?

It was built in 2007, making it 18 years old in 2025.

What condition is E. 120th Ave over Local Drainage 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 2023.

How much traffic does E. 120th Ave over Local Drainage carry?

About 2,091 vehicles per day (2021 count).

How long is E. 120th Ave over Local Drainage?

The structure is 34 ft (10.3 m) long with a longest span of 16 ft (4.9 m) and a deck 50 ft wide.

Who owns E. 120th Ave over Local Drainage?

It is owned by the County Highway Agency.