US Bridges

8th Ave over South Platte River

Good

Denver County, Colorado · Just West of Zuni Street · Structure no. D-02-PR-150A

Built
2021
4 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
195 ft
2 main spans
Daily traffic
20,305
2013 count
Owner
City
City or Municipal Highway Agency

About this bridge

8th Ave over South Platte River is a prestressed concrete continuous box beam or girders - multiple carrying 8th Ave over South Platte River in Denver County, Colorado. It was built in 2021, so it is 4 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20,305 vehicles a day, roughly 6% of them trucks, projected to reach 24,975 by 2033. The structure is 195 ft (59.5 m) long and 83 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries8th Ave
CrossesSouth Platte River
LocationJust West of Zuni Street
RouteCity Street 0
Coordinates39.7294, -105.01717
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 rating71.4 US tons
Inventory rating53.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length195 ft (59.5 m)
Longest span93 ft (28.2 m)
Deck width83 ft (25.3 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,305 (2013)
Projected traffic24,975 by 2033
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 8th Ave over South Platte River built?

It was built in 2021, making it 4 years old in 2025.

What condition is 8th Ave over South Platte River 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 October 2024.

How much traffic does 8th Ave over South Platte River carry?

About 20,305 vehicles per day (2013 count), of which roughly 6% are trucks.

How long is 8th Ave over South Platte River?

The structure is 195 ft (59.5 m) long with a longest span of 93 ft (28.2 m) and a deck 83 ft wide.

Who owns 8th Ave over South Platte River?

It is owned by the City or Municipal Highway Agency.