US Bridges

Maryland Avenue over Arizona Canal

Fair

Maricopa County, Arizona · 0.03 MI W of 20th Street · Structure no. 08520

Built
1955
70 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
65 ft
3 main spans
Daily traffic
1,657
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Maryland Avenue over Arizona Canal is a concrete continuous slab carrying Maryland Avenue over Arizona Canal in Maricopa County, Arizona. It was built in 1955, so it is 70 years old, older than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 1,657 vehicles a day, roughly 1% of them trucks, projected to reach 1,667 by 2042. The structure is 65 ft (19.8 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMaryland Avenue
CrossesArizona Canal
Location0.03 MI W of 20th Street
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.531, -112.0386
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.7 US tons
Inventory rating19 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span26 ft (7.9 m)
Deck width60 ft (18.4 m)
Roadway width49 ft (14.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,657 (2023)
Projected traffic1,667 by 2042
Trucks1%
Lanes on structure3
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1,000 (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Maryland Avenue over Arizona Canal built?

It was built in 1955, making it 70 years old in 2025.

What condition is Maryland Avenue over Arizona Canal 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 January 2025.

How much traffic does Maryland Avenue over Arizona Canal carry?

About 1,657 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Maryland Avenue over Arizona Canal?

The structure is 65 ft (19.8 m) long with a longest span of 26 ft (7.9 m) and a deck 60 ft wide.

Who owns Maryland Avenue over Arizona Canal?

It is owned by the City or Municipal Highway Agency.