Healdsburg Memorial Bridge

Listed on the National Register of Historic Places in 2011. 12 historic topographic surveys show this location, the earliest from 1920.

From the record

“The Healdsburg Memorial Bridge is a steel truss bridge across the Russian River in Healdsburg, California, listed in the National Register of Historic Places. Route 101 and is "Healdsburg's abiding structural symbol".”
Wikipedia article Healdsburg Memorial Bridge, CC BY-SA 4.0.

One of 73 National Register listings published here for Sonoma County · listed in 2011 · category: Structure.

Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

The listing

What is counted as historic. The nomination lists 1 structure as contributing to the listing.
Address. Healdsburg Ave, junction of Front St, Healdsburg, 95448
When was it listed? April 2011
Category. structure
Also known as. Highway Bridges of California MPS
Census division. Healdsburg
National Register reference number. 11000214 - the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.

Fires near this property

263 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 263 fires within 5 miles of Healdsburg Memorial Bridge between 1992 and 2020, burning about 356 acres in total. 4 started naturally. 15 were 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	127
Equipment and vehicle use	78
Debris and open burning	21
Arson/incendiarism	15
Misuse of fire by a minor	5
Power generation/transmission/distribution	5
Natural	4
Smoking	4
Recreation and ceremony	4

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
9 September 2018	Missing data/not specified/undetermined	1.0 acres	California Department of Forestry & Fire Protection	ALEXANDER VALLEY RD HEAL
9 September 2004	Equipment and vehicle use	1.0 acres	Sonoma-Lake Napa Unit	FELTA
8 September 1996	Missing data/not specified/undetermined	2.0 acres	Sonoma-Lake Napa Unit	MILL
7 September 2020	Missing data/not specified/undetermined	40 acres	Sonoma-Lake Napa Unit	not named
6 September 2005	Missing data/not specified/undetermined	under an acre	California Department of Forestry & Fire Protection	not named
6 September 2001	Equipment and vehicle use	8.0 acres	Sonoma-Lake Napa Unit	101
5 September 2004	Arson/incendiarism	5.0 acres	Sonoma-Lake Napa Unit	PASSALAQUA
5 September 1993	Smoking	under an acre	Sonoma-Lake Napa Unit	ACADEMY

Every fire recorded in Sonoma County

Mines and quarries near this property

10 of 36 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 36 workings within 5 miles of Healdsburg Memorial Bridge: 18 producers, 8 unknowns, 8 occurrences, 2 past producers. 18 still produce. What was taken out: Sand and Gravel, Construction, Manganese, Stone, Mercury. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Site	Commodity	Status
Inman Shale Quarry	Stone, Crushed/Broken	Producer
Purviance Ranch	Calcium	Unknown
Unnamed Prospect	Copper	Unknown
Unnamed Prospect	Tin	Occurrence
Dreamland	Mercury	Producer
Guerneville	Mercury	Past Producer
Mcpherson Ranch	Chromium	Occurrence
Unnamed Location	Chromium	Occurrence
Basalt Rock Co.	Stone	Unknown
Brooks Quarry	Stone	Producer

Every working recorded in Sonoma County

Storms near this property

6 since 2014

Regional context, not property-specific evidence. The National Weather Service names Healdsburg, the town this property stands in, in 6 storm reports between 2014 and 2020: 3 flood, 1 flash flood, 1 debris flow, 1 hail. No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.

When	Event	Place named	Harm	What the report says
December 2014	Flash Flood	Healdsburg	$5,000	Flash flood swept SUV off road and into Dry Creek.
December 2014	Flood	Healdsburg	$1,000	Foss Creek over banks and flooding Vine and Grove. Law enforcement closed roads.
December 2014	Flood	Healdsburg	$1,000	Law enforcement reports numerous road closures due to flooding in Healdsburg. Intersections included Piper at East, Center at Grant, Piper at Healdsburg, and Center at Mitchell.
March 2020	Hail	Healdsburg	-	Pea-sized hail reported in Geyserville.
January 2019	Debris Flow	Healdsburg	-	Rock slide in roadway covering road.
February 2019	Flood	Healdsburg	-	Roadway flooding on SB Hwy 101 off ramp at Mill Street.

Every storm recorded in Sonoma County

Maps showing this location

12 surveys

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.

1920 USGS Healdsburg quadrangle1:62500
1933 USGS Healdsburg quadrangle1:48000
1940 USGS Healdsburg quadrangle1:62500 - 3 printings
1947 USGS Santa Rosa quadrangle1:250000
1949 USGS Santa Rosa quadrangle1:250000 - 2 printings
1955 USGS Healdsburg quadrangle1:24000 - 3 printings
1955 USGS Healdsburg quadrangle1:62500 - 2 printings
1958 USGS Santa Rosa quadrangle1:250000 - 3 printings
1962 USGS Santa Rosa quadrangle1:250000
1964 USGS Santa Rosa quadrangle1:250000
1972 USGS Healdsburg quadrangle1:100000 - 2 printings
1993 USGS Healdsburg quadrangle1:24000 - 2 printings

Listed places nearby

6 within 8 miles

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.

Property	Distance	Listed
Healdsburg Carnegie Library	1.2 miles	1988
Madrona Knoll Rancho District	1.4 miles	1987
Cunningham-Hembree Estate	4.4 miles	2018
Walters Ranch	4.6 miles	1977
James H. and Frances E. Laughlin House	7.5 miles	1979
Geyserville Union School	7.6 miles	1979

Sources for this property

National Archives record	The nomination case file for reference 11000214 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Sonoma County	All 73 listed properties in this county.

Provenance

Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.
Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.