Listed on the National Register of Historic Places in 2005. 11 historic topographic surveys show this location, the earliest from 1942.
“The Swartz Creek Bridge on Aetna Springs Road, in Napa County, California near Aetna Springs, California was listed on the National Register of Historic Places in 2005.”
Wikipedia article Swartz Creek Bridge on Aetna Springs Road, CC BY-SA 4.0.
One of 88 National Register listings published here for Napa County · listed in 2005 · category: Structure.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service
The ground this property stands on, surveyed 56 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.
Regional context, not property-specific evidence. The federal wildfire occurrence database lists 82 fires within 5 miles of Swartz Creek Bridge on Aetna Springs Road between 1992 and 2020, burning about 4,550 acres in total. 4 started naturally. None was recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.
| Reported cause | Fires |
|---|---|
| Missing data/not specified/undetermined | 31 |
| Equipment and vehicle use | 29 |
| Debris and open burning | 10 |
| Smoking | 5 |
| Natural | 4 |
| Recreation and ceremony | 2 |
| Power generation/transmission/distribution | 1 |
The most recent of them, most recent first, with the day each was reported and the service that recorded it.
| Date | Cause | Size | Reported by | Name on the report |
|---|---|---|---|---|
| 3 September 2003 | Natural | under an acre | Sonoma-Lake Napa Unit | BUTTS |
| 27 September 1999 | Debris and open burning | 7.0 acres | Sonoma-Lake Napa Unit | SNELL |
| 25 September 2001 | Natural | under an acre | Sonoma-Lake Napa Unit | BUTTS |
| 24 September 2001 | Natural | under an acre | Sonoma-Lake Napa Unit | INK |
| 24 September 2001 | Natural | under an acre | Northern California District | AETNA |
| 21 September 1996 | Equipment and vehicle use | under an acre | Sonoma-Lake Napa Unit | POPE VALLEY |
| 2 September 2003 | Equipment and vehicle use | under an acre | Sonoma-Lake Napa Unit | AETNA |
| 19 September 2007 | Missing data/not specified/undetermined | 10 acres | Northern California District | UNNAMED FIRE 3777 |
Regional context, not property-specific evidence. The federal mineral resources record lists 76 workings within 5 miles of Swartz Creek Bridge on Aetna Springs Road: 41 occurrences, 17 past producers, 8 prospects, 6 producers. 7 still produce. What was taken out: Mercury, Chromium, Manganese, Geothermal. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Palisade Mine Grigsby | Silver, Gold | Producer | ||
| Aetna Springs | Geothermal | Unknown | ||
| Napa Copper | Copper | Occurrence | Underground | |
| Napa Copper Claim | Copper | Past Producer | ||
| Unnamed Location | Geothermal | Occurrence | ||
| Cavagnaro Prospect | Manganese | Occurrence | ||
| Cavagnaro Prospect | Manganese | Occurrence | 1917 | |
| Hastings Prospect | Manganese | Occurrence | 1918 | |
| Liberty | Manganese | Occurrence | ||
| Liberty Claim | Manganese | Occurrence | 1918 |
United States Geological Survey topographic sheets whose coverage includes this point. Matched by taking the coordinate the National Park Service records for this property, then testing that coordinate against the published boundary of every sheet.
Other National Register properties close enough to walk or drive between, ordered by distance from this one. Both positions come from the same geocoding pass that matched these properties to their map sheets.
| Photograph | Property | Distance | Listed |
|---|---|---|---|
| Aetna Springs Resort | 0.5 miles | 1987 | |
 | Maxwell Creek Bridge on Hardin Road | 6.7 miles | 2005 |
| Larkmead Winery | 7.0 miles | 1982 | |
 | Garnett Creek Bridge on Greenwood Avenue | 7.0 miles | 2005 |
 | Sam Brannan Cottage | 7.3 miles | 1983 |
 | Garnett Creek Bridge on CA 29 | 7.5 miles | 2005 |
| National Archives record | The nomination case file for reference 05000780 in Record Group 79. |
| Wikipedia article | Community-written account of this property, licensed CC BY-SA. |
| Napa County | All 88 listed properties in this county. |
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