Maricopa County, AZ

2,203 public highway bridges

Maricopa County Bridge Snapshot

Maricopa County, Arizona contains 2,203 public highway bridges in the FHWA National Bridge Inventory. Roughly 53.9% are rated “Good,” 24% “Fair,” 0.1% “Poor,” and 0.1% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in AZ are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

2,203

Total Bridges

53.9%

Good

0.1%

Poor

0.1%

Structurally Deficient

Condition Distribution

Good

53.9% (1,187)

Fair

24% (529)

Poor

0.1% (3)

SD

0.1% (3)

All Bridges (2,203)

Sort:

27th Avenue

Over: Grand Canal

0.16 mi N of Osborn Road, Maricopa, AZ

Built 1975 Load: 29.4 t ADT: 31,022

Cashman Dr

Over: West Wash

Cashman Dr E/O 41 St, Maricopa, AZ

Built 1997 Load: 29.4 t ADT: 3,000

Pathfinder Dr

Over: East Wash

Pathfinder Dr W/O 46 Pl, Maricopa, AZ

Built 1997 Load: 29.5 t ADT: 2,943

Trailblazer Dr

Over: East Wash

Trailblazer Dr W/O 46 Pl, Maricopa, AZ

Built 1997 Load: 29.5 t ADT: 1,733

Bethany Home Rd

Over: Wash

200' E of 125th Ave, Maricopa, AZ

Built 2004 Load: 29.5 t ADT: 3,036

32nd Street

Over: Grand Canal

0.15 mi S of McDowell, Maricopa, AZ

Built 1965 Load: 29.7 t ADT: 42,438

Thunderbird Road

Over: Cave Creek

0.19 mi E of 23rd Ave, Maricopa, AZ

Built 1965 Load: 29.7 t ADT: 40,125

Brown Rd

Over: RWCD Canal

0.2 mi E of Greenfield, Maricopa, AZ

Built 1976 Load: 29.9 t ADT: 19,152

Bell Road

Over: Skunk Creek

0.1 mi E Jct 75th Ave, Maricopa, AZ

Built 1964 Load: 29.9 t ADT: 38,132

Val Vista Drive

Over: Eastern Canal

0.2 mi N of Main Street, Maricopa, AZ

Built 1959 Load: 29.9 t ADT: 22,875

Hayden Road

Over: Arizona Canal

0.2 mi S Indian Bend Rd, Maricopa, AZ

Built 1975 Load: 29.9 t ADT: 27,206

McDonald Drive

Over: Indian Bend Wash

0.03 mi W of Hayden Rd, Maricopa, AZ

Built 1975 Load: 29.9 t ADT: 10,050

McDowell Road EB

Over: Indian Bend Wash

0.1 mi E of Jct Miller Rd, Maricopa, AZ

Built 1974 Load: 29.9 t ADT: 36,841

Chaparral Road

Over: Arizona Canal

0.1 mi West Jct Miller Rd, Maricopa, AZ

Built 1974 Load: 29.9 t ADT: 32,028

Hardy Drive

Over: Western Canal

0.6 mi S Southern Ave, Maricopa, AZ

Built 1975 Load: 29.9 t ADT: 12,669

Stapley Drive

Over: Consolidated Canal

0.1 mi S Jct Brown Rd, Maricopa, AZ

Built 1964 Load: 29.9 t ADT: 19,661

Gilbert Road

Over: Consolidated Canal

0.2 mi S Jct University, Maricopa, AZ

Built 1965 Load: 29.9 t ADT: 30,481

12TH STREET

Over: Grand Canal

.4 MI N IND.SCH.RD, Maricopa, AZ

Built 1965 Load: 30.2 t ADT: 9,842

Indian School Rd

Over: Indian Bend Wash

0.12 mi E of 78th Street, Maricopa, AZ

Built 1978 Load: 30.8 t ADT: 20,849

Mayo Employee Entr

Over: Drainage Channel

0.01 mi E of 56th Street, Maricopa, AZ

Built 2010 Load: 31.1 t ADT: 2,500

MC-85 Hwy

Over: Agua Fria River

0.5 mi W/ El Mirage, Maricopa, AZ

Built 1973 Load: 31.2 t ADT: 17,466

29th Avenue

Over: AZ Canal Div Channel

South of Metro Center, Maricopa, AZ

Built 1985 Load: 31.6 t ADT: 5,000

35th Avenue

Over: Grand Canal

0.07 mi N of Osborn Rd, Maricopa, AZ

Built 1971 Load: 31.6 t ADT: 31,602

56 Street

Over: Reach 11

0.25 Mi N of CAP Canal, Maricopa, AZ

Built 1999 Load: 31.6 t ADT: 18,598

ACCESS ROAD

Over: DYSART DRAINAGE DITCH

0.3 MILES NORTH OF NORTH, Maricopa, AZ

Built 1994 Load: 31.7 t ADT: 10

US 60

Over: Wash

7.2 mi W Jct SR 71, Maricopa, AZ

Built 1934 Load: 31.8 t ADT: 1,673

I 8

Over: Wash

1.9 mi E Jct SR 85, Maricopa, AZ

Built 1970 Load: 31.8 t ADT: 2,825

Sun Valley Pkwy-11

Over: Wash

3.3 mi N/ McDowell Rd, Maricopa, AZ

Built 1989 Load: 31.8 t ADT: 724

Sun Valley Pkwy-21

Over: Wash

5.1 mi N/ McDowell Rd, Maricopa, AZ

Built 1989 Load: 31.8 t ADT: 724

Sun Valley Pkwy-33

Over: Wash

7.3 mi N/ McDowell Rd, Maricopa, AZ

Built 1989 Load: 31.8 t ADT: 933

Sun Valley Pkwy-34

Over: Wash

7.4 mi N/ McDowell Rd., Maricopa, AZ

Built 1989 Load: 31.8 t ADT: 933

Ellsworth Road

Over: Wash

400' S/ University, Maricopa, AZ

Built 1992 Load: 31.8 t ADT: 7,566

N Old Gilbert Road

Over: Eastern Canal

0.1 mi E Jct Gilbert Rd, Maricopa, AZ

Built 1972 Load: 31.8 t ADT: 2,482

Ft McDowell Rd

Over: Wash

2.25 mi N/ SR 87, Maricopa, AZ

Built 1958 Load: 31.8 t ADT: 863

163rd Avenue

Over: HaydenRhodes CAP Aqueduc

5 mi N/ US 60_Grand Ave, Maricopa, AZ

Built 1979 Load: 31.8 t ADT: 2,622

Cholla Street

Over: Drainage Channel

at Jct N 94th Way, Maricopa, AZ

Built 1975 Load: 31.8 t ADT: 1,450

Signal Butte Rd

Over: Drainage Ditch

N/ Broadway Rd, Maricopa, AZ

Built 1987 Load: 31.8 t ADT: 13,082

Dobson Road

Over: Western Canal

1/2 mi N Elliot, Maricopa, AZ

Built 1969 Load: 31.8 t ADT: 22,680

Gold Dust

Over: Drain Channel

Gold Dust & 64th St, Maricopa, AZ

Built 1973 Load: 31.8 t ADT: 1,250

Shea Blvd

Over: Floodway

Shea Blvd @ 64th St, Maricopa, AZ

Built 1956 Load: 31.8 t ADT: 43,700

Turquoise

Over: Floodway

Turquoise & 64th St, Maricopa, AZ

Built 1973 Load: 31.8 t ADT: 1,250

Cactus Road

Over: Drainage Ditch

100' W of 84th Street, Maricopa, AZ

Built 1979 Load: 31.8 t ADT: 36,000

Invergordon Road

Over: Indian Bend Wash

0.3 mi S Double Tree Rd, Maricopa, AZ

Built 1977 Load: 31.8 t ADT: 5,934

Carefree Hwy

Over: Wash

250' W/ 24th St, Maricopa, AZ

Built 1985 Load: 31.8 t ADT: 16,256

Mill Ave

Over: Crosscut Canal RCB

0.10 mi N of Curry Rd, Maricopa, AZ

Built 1932 Load: 31.8 t ADT: 12,870

Constellation St

Over: Drainage Ditch

S Riggs Rd 0.5 mi W/ Higl, Maricopa, AZ

Built 1997 Load: 31.8 t ADT: 550

Williams Field Rd

Over: RWCD Canal

E/ Power Road, Maricopa, AZ

Built 1997 Load: 31.8 t ADT: 13,395

Mayo Emergency Acc

Over: Drainage channel

0.01 mi E of 56th Street, Maricopa, AZ

Built 2010 Load: 31.8 t ADT: 2,500

92nd St

Over: Channel

0.2 mi S Jct Thndrbird Rd, Maricopa, AZ

Built 1987 Load: 31.8 t ADT: 3,400

Sun Valley Pkwy-70

Over: Wash

19.1 mi N/ McDowell Rd, Maricopa, AZ

Built 1989 Load: 31.9 t ADT: 9,729

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026