La Paz County, AZ

118 public highway bridges

La Paz County Bridge Snapshot

La Paz County, Arizona contains 118 public highway bridges in the FHWA National Bridge Inventory. Roughly 50% are rated “Good,” 34.7% “Fair,” 8.5% “Poor,” and 8.5% 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.

118

Total Bridges

50%

Good

8.5%

Poor

8.5%

Structurally Deficient

Condition Distribution

Good

50% (59)

Fair

34.7% (41)

Poor

8.5% (10)

SD

8.5% (10)

All Bridges (118)

Sort:

I 10 EB AND WB

Over: Colorado River

18.9 mi W of Jct US 95, La Paz, AZ

Built 1960 ADT: 50

I-10 EB

Over: Dome Rock Rd

6.9 mi W Jct US 95, La Paz, AZ

Built 1963 ADT: 200

B-10

Over: I-10

01.4 mi W Jct US 95, La Paz, AZ

Built 1964 ADT: 26,712

Avenue 75E

Over: I-10

38.5 mi E Jct US 60, La Paz, AZ

Built 1968 ADT: 25,998

Poston Rd

Over: I 10

0.6 M E CA ST Line, La Paz, AZ

Built 1977 ADT: 27,099

Buckskin Ped UP

Over: SR 95

23.3 mi N of Jct SR 72, La Paz, AZ

Built 1994 ADT: 5,661

Riggles Avenue

Over: I-10

0.5 mi E Jct US 95, La Paz, AZ

Built 2002 ADT: 21,859

Levee Road

Over: Colorado River & Svc. Rd

35 miles South of I-10, La Paz, AZ

Built 1960 ADT: 5

IRR BIA RTE 21

Over: MAIN DRAIN 17TH AVENUE

0.3 KM S OF BIA RTE 21/34, La Paz, AZ

Built 1969 Load: 21.1 t ADT: 90

IRR BIA RTE 50

Over: MAIN DRAIN

1.7 KM WEST OF BIA 1, La Paz, AZ

Built 1968 Load: 21.7 t ADT: 110

IRR BIA ROUTE 1

Over: TYSON WATERWAY

1.6 KM S OF BIA 1/56 INT., La Paz, AZ

Built 1958 Load: 22.0 t ADT: 1,700

IRR BIA RTE 50

Over: USBR MAIN DRAIN

4 KM WEST OF BIA 1, La Paz, AZ

Built 1954 Load: 25.9 t ADT: 30

IRR BIA RTE 60

Over: USBR DRAIN

3.2 KM WEST OF BIA 1, La Paz, AZ

Built 1953 Load: 25.9 t ADT: 65

Plomosa Road

Over: Bouse Wash

0.5 West of SR 72, La Paz, AZ

Built 1993 Load: 27.2 t ADT: 363

IRR BIA RTE 1

Over: EAST DRAIN DITCH

1.6 KM S OF BIA RTE 1/18, La Paz, AZ

Built 1962 Load: 28.5 t ADT: 2,800

IRR BIA RTE 1

Over: MESA DRAIN

1.2 KM N OF BIA RTE 1/56, La Paz, AZ

Built 1953 Load: 29.0 t ADT: 1,656

I 10; EB

Over: La Cholla Wash

2.7 mi W Jct US 95, La Paz, AZ

Built 1953 Load: 29.0 t ADT: 8,314

Parker Dam Road

Over: Colorado River

6 m NE of Parker, AZ, La Paz, AZ

Built 1934 Load: 32.3 t ADT: 360

Parker Dam Road

Over: Colorado River

6 m NE of Parker, AZ, La Paz, AZ

Built 1934 Load: 32.3 t ADT: 360

Parker Dam Road

Over: Colorado River

6 m NE of Parker, AZ, La Paz, AZ

Built 1934 Load: 32.3 t ADT: 360

IRR BIA RTE 1

Over: MAIN IRRIGATION CANAL

3.5 KM W OF AZ HWY 95, La Paz, AZ

Built 1962 Load: 32.4 t ADT: 3,895

IRR BIA RTE 10

Over: MAIN DRAIN

1.6 KM WEST OF BIA 1, La Paz, AZ

Built 1953 Load: 32.6 t ADT: 75

IRR BIA RTE 119

Over: WEST WAY DRAIN

0.8 KM E OF BIA 21/24 JCT, La Paz, AZ

Built 1969 Load: 32.6 t ADT: 100

IRR BIA RTE 27

Over: WEST DRAIN

MIDWY BETWN BIA RTS 27/30, La Paz, AZ

Built 1953 Load: 32.6 t ADT: 89

IRR BIA RTE 34

Over: WEST DRAIN

7.9 KM EAST OF BIA 1, La Paz, AZ

Built 1953 Load: 32.6 t ADT: 30

IRR BIA 44

Over: USBR DRAIN

6.3 KM W OF BIA 1, La Paz, AZ

Built 1953 Load: 32.6 t ADT: 40

IRR BIA RTE 38

Over: FIRST FEEDER NO 7 DRAIN

1.7 KM EAST OF BIA 1, La Paz, AZ

Built 1953 Load: 32.6 t ADT: 175

IRR BIA RTE 117

Over: SECOND FEEDER DRAIN

0.5 KM SOUTH OF BIA 38, La Paz, AZ

Built 1955 Load: 32.6 t ADT: 112

BIA IRR RTE 24

Over: IRRIGATION CANAL

4 KM EAST OF POSTON, La Paz, AZ

Built 1980 Load: 32.6 t ADT: 40

IRR BIA RTE 4

Over: MAIN CANAL

2.1 KM WEST OF BIA 3, La Paz, AZ

Built 1982 Load: 32.7 t ADT: 400

IRR SR 95

Over: Bouse Wash

0.4 mi South of Jct SR 72, La Paz, AZ

Built 1970 Load: 32.7 t ADT: 4,250

SR 72; FAS 265

Over: CAP Aqueduct

5.8 mi West of Jct US 60, La Paz, AZ

Built 1978 Load: 32.7 t ADT: 2,725

US 60

Over: Wash

13.9 mi E Jct SR 72, La Paz, AZ

Built 1934 Load: 32.7 t ADT: 1,673

Dome Rock Rd

Over: Unnamed Wash

3.6 mi E US 95, La Paz, AZ

Built 1970 Load: 32.7 t ADT: 504

Dome Rock Road E

Over: Wash

2.6 mi E Jct US 95, La Paz, AZ

Built 1938 Load: 32.7 t ADT: 60

Dome Rock Road W

Over: Wash

3.1 mi W Jct US 95, La Paz, AZ

Built 1938 Load: 32.7 t ADT: 688

W Main St

Over: Tyson Wash

0.2 mi W Jct US 95, La Paz, AZ

Built 1981 Load: 32.7 t ADT: 3,605

W Main St

Over: Tyson Wash

0.4 mi W Jct US 95, La Paz, AZ

Built 1981 Load: 32.7 t ADT: 3,605

IRR BIA RTE 10

Over: MAIN CANAL

6 KM EAST OF BIA 1, La Paz, AZ

Built 1982 Load: 35.8 t ADT: 365

IRR BIA RTE 501

Over: MAIN CANAL

1 BLK W AGENCY MAINT SHOP, La Paz, AZ

Built 1988 Load: 36.1 t ADT: 150

River Rd

Over: Colorado River

13.4 mi S of I-10, La Paz, AZ

Built 1981 Load: 36.3 t ADT: 210

I-10 EB

Over: CAP Canal

21.1 mi E Jct US 60, La Paz, AZ

Built 1982 Load: 37.2 t ADT: 13,875

IRR BIA RTE 18

Over: COLORADO RIVER

2.6 MI W OF BIA RTE 1, La Paz, AZ

Built 1981 Load: 39.0 t ADT: 274

I 10; WB

Over: Wash

11.6 mi East of Jct US 60, La Paz, AZ

Built 1967 Load: 44.5 t ADT: 12,095

IRR SR 95

Over: Climas Wash

10.0 mi North of Jct I 10, La Paz, AZ

Built 1984 Load: 67.1 t ADT: 2,912

US 60

Over: Wash

2.8 mi East of Jct I 10, La Paz, AZ

Built 1932 Load: 69.9 t ADT: 1,200

US 60

Over: Wash

3.0 mi East of Jct I 10, La Paz, AZ

Built 1932 Load: 70.8 t ADT: 1,200

SR 95

Over: Silver Creek

5.4 mi South SR 68, La Paz, AZ

Built 1978 Load: 75.3 t ADT: 32,600

I 10; EB & WB

Over: Gonzales Wash

8.7 mi W Jct US 95, La Paz, AZ

Built 1950 Load: 89.8 t ADT: 23,081

IRR BIA RTE 39

Over: LATERAL CANAL 19- R

0.2 KM NORTHWEST OF BIA 1, La Paz, AZ

Built 1976 Load: 29.6 t ADT: 100

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 5, 2026