Home › California › Merced County

Bridge conditions in Merced County, California

532 inventoried bridges · 23 rated poor · 2025 National Bridge Inventory

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

23 of the 532 bridges the federal inventory lists in Merced County are rated poor; the rest split 195 good and 314 fair.

23 of the 532 bridges in Merced County, California, are rated in poor condition (4.3%) in the 2025 National Bridge Inventory, as of August 20, 2026.
195 bridges (36.7%) are rated good and 314 (59.0%) fair.
The median Merced County bridge was built in 1966.
The busiest poor-rated bridge is State Route 99 SB over Black Rascal Canal (built 1964), carrying about 25,500 vehicles a day.

Good 36.7% · Fair 59.0% · Poor 4.3% of 532 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
State Route 99 SB over Black Rascal Canal	1964	25,500	Poor
State Route 99 NB over Black Rascal Canal	1962	25,500	Poor
State Route 99 SB over Bear Creek	1962	25,500	Poor
Buhach Road over Livingston Canal	1965	9,555	Poor
Applegate Road over State Route 99 & Ramps	1957	9,220	Poor
State Route 152 WB over Fresno River	1969	8,425	Poor
Pioneer Rd over Outside Canal	1960	1,360	Poor
Gurr Road over Duck Slough	1975	500	Poor
Dan Mcnamara Road over Deadman Creek	1960	400	Poor
Burchell Avenue over Duck Slough	1938	360	Poor
Santa Rita Grade over San Juan Canal	1950	327	Poor
Ingomar Road over San Luis Creek	1987	304	Poor
Old State Route 99 over Miles Creek Overflow	1938	270	Poor
Washington Rd over Sand Slough	1950	267	Poor
Husman Road over Outside Canal	1945	265	Poor
Bryant Ave over Colony Main Canal	1940	200	Poor
Snyder Road over Delta-mendota Canal	1956	150	Poor
Washington Road over Eastside Bypass	1968	120	Poor
Cottonwood Road over Outside Canal	1975	108	Poor
Moraga Avenue over Delta-mendota Canal	1950	101	Poor
Quinley Avenue over Black Rascal Creek	1962	100	Poor
Bunker Road over Outside Canal	1930	93	Poor
Baxter Road over S Fork Dutchman Creek	1941	35	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
State Route 99 over Turlock Canal	1935	65,000	Fair
State Route 99 NB over 15TH Street	1962	51,000	Fair
State Route 99 over West 16TH St UP RR	2013	51,000	Fair
State Route 99 over UPRR & 16TH Street	2015	51,000	Fair
State Route 99 over Athlone Drain	2015	39,000	Good
State Route 99 SB over El Capitan Way	1980	37,000	Fair
State Route 99 NB over El Capitan Way	1980	37,000	Fair
State Route 99 SB over Collier Road	1997	32,000	Fair
State Route 99 NB over Collier Road	1997	32,000	Fair
State Route 99 SB over Merced River	1997	28,000	Good

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

Every bridge in Merced County → - all 532, busiest first, each with its own condition record.

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.