Bridge conditions in Merced County, California
532 inventoried bridges · 23 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
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 .
- 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.
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.