US Bridges

99th Avenue over Dry Wash

Good

Maricopa County, Arizona · 0.10 MI N of Country Plc · Structure no. 10852

Built
2009
16 years old
Condition
Good
inspected February 2021
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
16,415
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

99th Avenue over Dry Wash is a concrete continuous culvert carrying 99th Avenue over Dry Wash in Maricopa County, Arizona. It was built in 2009, so it is 16 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 16,415 vehicles a day, roughly 1% of them trucks, projected to reach 16,425 by 2040. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
Carries99th Avenue
CrossesDry Wash
Location0.10 MI N of Country Plc
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.4187, -112.2726
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating59.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,415 (2020)
Projected traffic16,425 by 2040
Trucks1%
Lanes on structure4
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was 99th Avenue over Dry Wash built?

It was built in 2009, making it 16 years old in 2025.

What condition is 99th 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 February 2021.

How much traffic does 99th Avenue over Dry Wash carry?

About 16,415 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is 99th Avenue over Dry Wash?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns 99th Avenue over Dry Wash?

It is owned by the City or Municipal Highway Agency.