US Bridges

Maryland Ave. over Surface Drainage

Good

Maricopa County, Arizona · Maryland Ave @ Grand Ave · Structure no. 07186

Built
2004
21 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
5,000
2016 count
Owner
State
State Highway Agency

About this bridge

Maryland Ave. over Surface Drainage is a concrete continuous culvert carrying Maryland Ave. over Surface Drainage in Maricopa County, Arizona. It was built in 2004, so it is 21 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 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 5,000 vehicles a day, roughly 5% of them trucks, projected to reach 5,010 by 2036. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMaryland Ave.
CrossesSurface Drainage
LocationMaryland Ave @ Grand Ave
RouteU.S. Route 60
StateArizona
Coordinates33.5315, -112.1764
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.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.1 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 traffic5,000 (2016)
Projected traffic5,010 by 2036
Trucks5%
Lanes on structure3
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

OwnerState Highway Agency
Maintained byState 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 Maryland Ave. over Surface Drainage built?

It was built in 2004, making it 21 years old in 2025.

What condition is Maryland Ave. over Surface Drainage 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 July 2024.

How much traffic does Maryland Ave. over Surface Drainage carry?

About 5,000 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Maryland Ave. over Surface Drainage?

The structure is 30 ft (9.1 m) long with a longest span of 10 ft (3 m).

Who owns Maryland Ave. over Surface Drainage?

It is owned by the State Highway Agency.