US Bridges

E 6th Avenue over Adonea Tributary

Fair

Arapahoe County, Colorado · .3 MI W of Powhaton · Structure no. AUR07.0-X.5

Built
2016
9 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
46 ft
3 main spans
Daily traffic
2,784
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

E 6th Avenue over Adonea Tributary is a concrete culvert carrying E 6th Avenue over Adonea Tributary in Arapahoe County, Colorado. It was built in 2016, so it is 9 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 2,784 vehicles a day, roughly 1% of them trucks, projected to reach 3,396 by 2041. The structure is 46 ft (14.1 m) long and 108 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesE 6th Avenue
CrossesAdonea Tributary
Location.3 MI W of Powhaton
RouteCity Street 0
CountyArapahoe County
StateColorado
Coordinates39.72551, -104.68369
Functional classUrban Local

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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating91.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length46 ft (14.1 m)
Longest span14 ft (4.3 m)
Deck width108 ft (32.8 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,784 (2021)
Projected traffic3,396 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was E 6th Avenue over Adonea Tributary built?

It was built in 2016, making it 9 years old in 2025.

What condition is E 6th Avenue over Adonea Tributary 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 November 2023.

How much traffic does E 6th Avenue over Adonea Tributary carry?

About 2,784 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is E 6th Avenue over Adonea Tributary?

The structure is 46 ft (14.1 m) long with a longest span of 14 ft (4.3 m) and a deck 108 ft wide.

Who owns E 6th Avenue over Adonea Tributary?

It is owned by the City or Municipal Highway Agency.