US Bridges

28th Avenue over Dry Wash

Good

Maricopa County, Arizona · North of Marconi Ave · Structure no. 08764

Built
1979
46 years old
Condition
Good
inspected November 2020
Type
Culvert
Concrete Continuous
Length
44 ft
4 main spans
Daily traffic
5,000
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

28th Avenue over Dry Wash is a concrete continuous culvert carrying 28th Avenue over Dry Wash in Maricopa County, Arizona. It was built in 1979, so it is 46 years old, younger than the Arizona average of 47.8 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 5,000 vehicles a day, roughly 1% of them trucks, projected to reach 5,010 by 2040. The structure is 44 ft (13.4 m) long and 62 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries28th Avenue
CrossesDry Wash
LocationNorth of Marconi Ave
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.6327, -112.1191
Functional classUrban Collector

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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2020
Inspection intervalevery 48 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 alignment6: Equal to present minimum criteria
Operating rating82.8 US tons
Inventory rating50.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span10 ft (3 m)
Deck width62 ft (18.9 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2020)
Projected traffic5,010 by 2040
Trucks1%
Lanes on structure2
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 28th Avenue over Dry Wash built?

It was built in 1979, making it 46 years old in 2025.

What condition is 28th Avenue over Dry Wash 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 November 2020.

How much traffic does 28th Avenue over Dry Wash carry?

About 5,000 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is 28th Avenue over Dry Wash?

The structure is 44 ft (13.4 m) long with a longest span of 10 ft (3 m) and a deck 62 ft wide.

Who owns 28th Avenue over Dry Wash?

It is owned by the City or Municipal Highway Agency.