Imperial County, CA

448 public highway bridges

Imperial County Bridge Snapshot

Imperial County, California contains 448 public highway bridges in the FHWA National Bridge Inventory. Roughly 41.5% are rated “Good,” 37.5% “Fair,” 8.7% “Poor,” and 8.7% 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 CA 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.

448

Total Bridges

41.5%

Good

8.7%

Poor

8.7%

Structurally Deficient

Condition Distribution

Good

41.5% (186)

Fair

37.5% (168)

Poor

8.7% (39)

SD

8.7% (39)

All Bridges (448)

Sort:

STATE ROUTE 78 WB

Over: KALIN RD, WESTSIDE MAIN

11-IMP-078-R9.83, Imperial, CA

Built 2012 ADT: 700

STATE ROUTE 78 EB

Over: KALIN RD, WESTSIDE MAIN

11-IMP-078-R9.83, Imperial, CA

Built 2012 ADT: 700

DOGWOOD ROAD

Over: INTERSTATE 8

11-IMP-008-R39.00-ECN, Imperial, CA

Built 2017 ADT: 34,500

IMPERIAL AVENUE

Over: INTERSTATE 8

11-IMP-008-R36.97-ECN, Imperial, CA

Built 2022 ADT: 194,000

UP RR & AMTRAK

Over: PICACHO ROAD

150FT NE/O QUECHAN RD, Imperial, CA

Built 1955 ADT: 4,400

EVAN HEWES HWY

Over: AWATOBE DITCH

2.36 MI E/O IMPERIAL HWY, Imperial, CA

Built 1932 Load: 3.6 t ADT: 615

SCARONI RD

Over: CENTRAL MAIN CANAL

0.5 MI N/O COLE RD, Imperial, CA

Built 1935 Load: 4.9 t ADT: 300

EVAN HEWES HWY

Over: HAVELOCK DITCH

4.5 MI E/O IMPERIAL HWY, Imperial, CA

Built 1932 Load: 6.2 t ADT: 372

EVAN HEWES HWY

Over: ALVIRA DITCH

4.8 MI E/O IMPERIAL HWY, Imperial, CA

Built 1932 Load: 6.8 t ADT: 372

MEHRING RD

Over: MOHAVE LATERAL CANAL

1.9 MI E/O YORK RD, Imperial, CA

Built 1950 Load: 7.1 t ADT: 250

YORK RD

Over: RESERVATION MAIN DRAIN

0.2 MI N/O MEHRING RD, Imperial, CA

Built 1950 Load: 10.0 t ADT: 10

State Route 186

Over: All American Canal

6 miles NW of Yuma, Ari, Imperial, CA

Built 1938 Load: 16.4 t ADT: 13,200

EVAN HEWES HWY

Over: LEE DITCH

1.57 MI E/O IMPERIAL HWY, Imperial, CA

Built 1932 Load: 18.1 t ADT: 272

EVAN HEWES HWY

Over: QUAKER WASH

1.7 MI E/O IMPERIAL HWY, Imperial, CA

Built 1932 Load: 18.1 t ADT: 372

EVAN HEWES HWY

Over: BERENDO DITCH

2.1 MI E OF IMPERIAL HWY, Imperial, CA

Built 1932 Load: 18.1 t ADT: 372

EVAN HEWES HWY

Over: RIMBO DITCH

5.8 MI E/O IMPERIAL HWY, Imperial, CA

Built 1932 Load: 18.1 t ADT: 372

ARAZ ROAD (CR S24)

Over: WINDMILL WASH

0.28 MI N/O I-8 EXIT 166, Imperial, CA

Built 1932 Load: 18.1 t ADT: 510

O&M Canal Roads

Over: All-American Canal

11 miles NE of Yuma, Imperial, CA

Built 1935 Load: 18.8 t ADT: 50

O&M Service Roads

Over: All-American Canal

8.3 miles north of Yuma, Imperial, CA

Built 1960 Load: 18.8 t ADT: 50

GENTRY RD

Over: VAIL CANAL

1.5 MI S/O EDDINS RD, Imperial, CA

Built 1936 Load: 19.8 t ADT: 1,360

FITES RD

Over: WESTSIDE MAIN CANAL

20 FT S/O CARTER RD, Imperial, CA

Built 1940 Load: 19.8 t ADT: 80

Service Road

Over: Picacho Wash Overchute

7 mi north of Yuma, AZ, Imperial, CA

Built 1970 Load: 20.1 t ADT: 50

SWARTHOUT RD

Over: WESTSIDE MAIN CANAL

0.2 MI S/O EDGAR RD, Imperial, CA

Built 1950 Load: 20.1 t ADT: 66

4TH STREET

Over: PALO VERDE LAGOON

300 FT E/O SR 78, Imperial, CA

Built 1950 Load: 20.1 t ADT: 800

PELLETT RD

Over: WESTSIDE MAIN CANAL

1.0 MI W/O 58C0179, Imperial, CA

Built 1950 Load: 20.4 t ADT: 60

KEFFER RD

Over: ALAMO RIVER

0.5 MI E/O SR-7, Imperial, CA

Built 1965 Load: 20.7 t ADT: 500

NELSON PIT RD

Over: EAST HIGHLINE CANAL

1.2 MI E/O MILLER RD, Imperial, CA

Built 1950 Load: 20.7 t ADT: 100

MELOLAND ROAD

Over: CENTRAL DRAIN

1.9 MI N/O EVAN HEWES HWY, Imperial, CA

Built 1940 Load: 20.7 t ADT: 626

STATE ROUTE 115

Over: HOLTVILLE MAIN DRAIN

11-IMP-115-18.15, Imperial, CA

Built 1953 Load: 21.1 t ADT: 2,350

STATE ROUTE 86 NB

Over: TESLA WASH

11-IMP-086-60.47, Imperial, CA

Built 1952 Load: 21.7 t ADT: 6,900

KEYSTONE RD

Over: WESTSIDE MAIN CANAL

0.3 MI W/O FORRESTER RD, Imperial, CA

Built 1950 Load: 22.0 t ADT: 25

WIEMAN RD

Over: WESTSIDE MAIN CANAL

2.3 MI S/O SR86 (HOSKINS), Imperial, CA

Built 1940 Load: 22.0 t ADT: 300

ANDRE RD

Over: WESTSIDE MAIN CANAL

0.6 MI W/O PELLETT RD, Imperial, CA

Built 1940 Load: 22.0 t ADT: 50

LARSEN ROAD

Over: CENTRAL MAIN CANAL

30 FT E/O AUSTIN RD, Imperial, CA

Built 1950 Load: 22.0 t ADT: 570

HARRIS ROAD

Over: CENTRAL MAIN CANAL

30 FT E/O AUSTIN RD, Imperial, CA

Built 1950 Load: 22.0 t ADT: 120

ERSKINE RD

Over: WESTSIDE MAIN CANAL

0.75 MI N/O WORTHINGTON, Imperial, CA

Built 1950 Load: 22.4 t ADT: 109

Picacho Road

Over: All American Canal

7m north of Yuma, AZ, Imperial, CA

Built 1936 Load: 22.5 t ADT: 50

MUDD RD

Over: WESTSIDE MAIN CANAL

0.3 MI W/O FORRESTER RD, Imperial, CA

Built 1950 Load: 22.7 t ADT: 50

LYONS RD

Over: WESTSIDE MAIN CANAL

0.7 MI W/O DREW RD, Imperial, CA

Built 1940 Load: 23.0 t ADT: 100

URGUHART RD

Over: WESTSIDE MAIN CANAL

40 FT S/O CARTER, Imperial, CA

Built 1950 Load: 23.7 t ADT: 80

LUGO ROAD

Over: PALO VERDE LAGOON

0.32 MI E/O SR 78, Imperial, CA

Built 1950 Load: 24.0 t ADT: 300

STATE ROUTE 111

Over: CEDAR WASH

11-IMP-111-48.85, Imperial, CA

Built 1950 Load: 24.3 t ADT: 3,600

ST RTE 98, BOWKER

Over: ALL AMERICAN CANAL

11-IMP-098-34.43, Imperial, CA

Built 1938 Load: 24.3 t ADT: 15,343

IN-KO-PAH RD

Over: BOULDER CREEK

0.44 MI E/O SD CO LINE, Imperial, CA

Built 1932 Load: 24.3 t ADT: 138

EVAN HEWES HWY

Over: OCOTILLO WASH

0.4 MI E/O IMPERIAL HWY, Imperial, CA

Built 1932 Load: 24.3 t ADT: 272

TITSWORTH RD

Over: EAST HIGHLINE CANAL

1.5 MI E/O BUTTERS RD, Imperial, CA

Built 1950 Load: 24.3 t ADT: 50

FLOWING WELLS ROAD

Over: EAST HIGHLINE CANAL

4.0 MI E/O SR 111, Imperial, CA

Built 1950 Load: 24.3 t ADT: 50

NECKEL ROAD

Over: CENTRAL MAIN CANAL

50 FT E/O AUSTIN RD, Imperial, CA

Built 1972 Load: 24.3 t ADT: 630

STATE ROUTE 111

Over: SY WASH

11-IMP-111-49.20, Imperial, CA

Built 1950 Load: 25.3 t ADT: 3,600

STATE ROUTE 86 NB

Over: AMBIG DITCH

11-IMP-086-64.75, Imperial, CA

Built 1981 Load: 25.9 t ADT: 7,200

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

Related

Browse all → | Rankings →

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