Bridge conditions in Amador County, California
61 inventoried bridges · 15 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Of the 61 Amador County bridges in the federal inventory, 15 carry a poor rating. That 24.6% share is roughly 4x the national average.
- 15 of the 61 bridges in Amador County, California, are rated in poor condition (24.6%) in the 2025 National Bridge Inventory, as of .
- 21 bridges (34.4%) are rated good and 25 (41.0%) fair.
- The median Amador County bridge was built in 1965.
- The busiest poor-rated bridge is State Route 104 over Sutter Creek (built 1970), carrying about 11,000 vehicles a day.
Good 34.4% · Fair 41.0% · Poor 24.6% of 61 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 104 over Sutter Creek | 1970 | 11,000 | Poor |
| Shenandoah Road over Big Indian Creek | 1930 | 3,006 | Poor |
| State Route 88 over Silver Lake Spillway | 2002 | 2,750 | Poor |
| Shenandoah Road over South Fork Cosumnes Riv | 1985 | 2,450 | Poor |
| State Route 104 over Dry Creek | 2005 | 2,350 | Poor |
| State Route 49 over Cosumnes River | 1952 | 2,175 | Poor |
| Main Street over Amador Creek | 2014 | 2,000 | Poor |
| Fiddletown Road over North Fork Dry Creek | 1923 | 1,237 | Poor |
| Pitt Street over Jackson Creek | 1925 | 800 | Poor |
| Five Mile Drive over Mule Creek | 1925 | 260 | Poor |
| Rose Lane over North Fork Jackson Creek | 1971 | 30 | Poor |
| Bell Road over Big Indian Creek | 1925 | 26 | Poor |
| Bell Road over Pigeon Creek | 1925 | 26 | Poor |
| Lawrence Road over South Fork Cosumnes Riv | 1960 | 25 | Poor |
| Old Amador Road over Rancheria Creek | 1925 | 25 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| State Route 88 over Rocky Creek | 1942 | 22,300 | Good |
| State Route 49 over Jackson Creek | 1948 | 19,800 | Good |
| State Route 49 over Sutter Creek | 2007 | 13,900 | Good |
| State Route 49 over Amador Creek | 2007 | 13,900 | Good |
| State Route 104 over Sutter Creek | 1970 | 11,000 | Poor |
| State Route 49 over Rancheria Creek | 1983 | 11,000 | Fair |
| State Route 49 over Dry Creek | 1995 | 11,000 | Fair |
| State Route 88 over South Fork Jackson Creek | 1948 | 10,800 | Good |
| State Route 88 over Middle Fork Jackson Crk | 1948 | 10,800 | Good |
| State Route 88 over Jackson Creek | 1940 | 9,200 | 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.