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Bridge conditions in Imperial County, California

445 inventoried bridges · 35 rated poor · 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

The federal inventory lists 445 bridges in Imperial County: 243 rated good, 167 fair, and 35 poor.

35 of the 445 bridges in Imperial County, California, are rated in poor condition (7.9%) in the 2025 National Bridge Inventory, as of August 20, 2026.
243 bridges (54.6%) are rated good and 167 (37.5%) fair.
The median Imperial County bridge was built in 1970.
The busiest poor-rated bridge is Forrester Rd (S30) over Westside Main Canal (built 1950), carrying about 11,714 vehicles a day.

Good 54.6% · Fair 37.5% · Poor 7.9% of 445 bridges

Bridges rated poor

Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.

Bridge	Built	Vehicles/day	Condition
Forrester Rd (S30) over Westside Main Canal	1950	11,714	Poor
State Route 86 NB over Biloxi Ditch	1981	7,300	Poor
State Route 86 NB over Iberia Ditch	1981	7,300	Poor
State Route 86 SB over Amerosa Ditch	1989	7,300	Poor
State Route 86 NB over Amerosa Ditch	1981	7,300	Poor
State Route 86 SB over Verde Ditch	1989	7,300	Poor
State Route 86 NB over Verde Ditch	1981	7,300	Poor
Picacho Rd over Yuma Main Canal	1925	6,500	Poor
Winterhaven Drive over California Wasteway	1955	6,010	Poor
Picacho Rd over Reservation Main Drain	1977	4,700	Poor
State Route 111 over Clay Wash	1950	3,600	Poor
State Route 111 over Frink Wash	1950	3,600	Poor
Picacho Rd over Reservation Main Drain	1974	3,000	Poor
Bowker Rd over Briar Canal	1957	2,400	Poor
Bowker Rd over Central Main Canal	1957	2,400	Poor
Evan Hewes Hwy over Westside Main Canal	1963	2,225	Poor
State Route 98 over Westside Main Canal	1955	2,100	Poor
Drew Rd over New River	1948	1,500	Poor
Ware Rd over Central Main Canal	1940	1,100	Poor
Zenos Rd over Alamo River	1965	948	Poor
Gentry Rd over New River	1978	900	Poor
Kershaw Rd over Alamo River	1970	800	Poor
Anza Road over All American Canal	1936	800	Poor
Evan Hewes Hwy over South Fork Coyote Wash	1932	600	Poor
Ruegger Rd over Alamo River	1967	590	Poor
Brockman Rd over Greeson Wash	1947	550	Poor
Hetzel Road over Salt Creek	1978	318	Poor
Stalnacker Road over Reservation Main Drain	1950	200	Poor
Kubler Rd over Greeson Wash	1940	100	Poor
Weaver Rd over Central Main Canal	1950	100	Poor
Edgar Rd over Thistle Canal	1974	80	Poor
Boyd Road over East Highline Canal	1975	50	Poor
Shank Road over East Highline Canal	1938	50	Poor
Montgomery Road over East Highline Canal	1950	50	Poor
Flowing Wells Road over East Highline Canal	1950	50	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
Border Crossing (c over New River	2018	29,500	Good
State Route 111 over All American Canal	1938	29,000	Good
Imperial Avenue over Interstate 8	2022	23,361	Good
Interstate 8 over Araz Wash	1973	20,400	Good
State Route 111 SB over Rockwood Canal	2003	17,580	Good
State Route 111 NB over Rockwood Canal	2003	17,580	Good
Interstate 8 WB over UP RR	1967	17,250	Fair
Interstate 8 EB over UP RR	1967	17,250	Fair
State Route 111 SB over Central Main Canal	1965	17,000	Good
State Route 111 NB over Central Main Canal	1965	17,000	Good

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

All of California: California bridge conditions by county · every download on the data page.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.