Maxwell Creek Bridge on Hardin Road

Built in 1909. Listed on the National Register of Historic Places in 2005. 10 historic topographic surveys show this location, the earliest from 1942.

From the record

One of 88 National Register listings published here for Napa County · listed in 2005 · category: Structure · built in 1909.

Sources: 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. Hardin Rd., 1.6 mi. SE of Pope Canyon Rd., Locoallomi, 94574
When was it listed? August 2005
Category. structure
Also known as. Highway Bridges of California MPS
Census division. Lake Berryessa
When was it built? 1909
National Register reference number. 05000777 - 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

139 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 139 fires within 5 miles of Maxwell Creek Bridge on Hardin Road between 1992 and 2020, burning about 6,867 acres in total. 6 started naturally. 5 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	56
Equipment and vehicle use	44
Debris and open burning	14
Smoking	9
Natural	6
Arson/incendiarism	5
Power generation/transmission/distribution	3
Recreation and ceremony	2

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 1993	Equipment and vehicle use	2.0 acres	Sonoma-Lake Napa Unit	DOWLING
8 September 1998	Missing data/not specified/undetermined	under an acre	Northern California District	SUPERY
4 September 2003	Natural	under an acre	Sonoma-Lake Napa Unit	HARDIN
4 September 2003	Missing data/not specified/undetermined	5.0 acres	Northern California District	HARDIN 2
3 September 2016	Equipment and vehicle use	6.0 acres	California Department of Forestry & Fire Protection	HARDIN
3 September 2003	Missing data/not specified/undetermined	under an acre	Northern California District	CEDAR ROUGHS
28 September 2007	Smoking	under an acre	Sonoma-Lake Napa Unit	LAS POSADAS RD ANGWIN 22
25 September 2001	Natural	under an acre	Sonoma-Lake Napa Unit	LAS POSADAS

Every fire recorded in Napa County

Mines and quarries near this property

10 of 46 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 46 workings within 5 miles of Maxwell Creek Bridge on Hardin Road: 20 occurrences, 16 prospects, 6 producers, 3 past producers. 6 still produce. What was taken out: Chromium, Mercury, Manganese, Sand and Gravel, Construction. 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	Recorded
Walter Springs	Geothermal	Unknown
Pope Creek Pits	Sand and Gravel, Construction	Producer
Ray's Rock Sand and Gravel Pit	Sand and Gravel, Construction	Producer
White Rock Mine	Magnesite	Prospect
White Rock Mine Pope Valley, Walters	Magnesite	Producer	Magnesite
Lewis	Manganese	Occurrence
Lewis	Manganese	Occurrence
Moore Creek Manganese Ridge Prospect	Manganese	Producer
Moore Creek Prospect	Manganese	Past Producer	1918
Wallace	Manganese	Occurrence

Every working recorded in Napa County

Maps showing this location

10 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.

1942 USGS St. Helena quadrangle1:62500
1945 USGS St. Helena quadrangle1:62500 - 2 printings
1947 USGS Santa Rosa quadrangle1:250000
1949 USGS Santa Rosa quadrangle1:250000 - 2 printings
1958 USGS Chiles Valley quadrangle1:24000 - 8 printings
1958 USGS Santa Rosa quadrangle1:250000 - 3 printings
1960 USGS St. Helena quadrangle1:62500 - 2 printings
1962 USGS Santa Rosa quadrangle1:250000
1964 USGS Santa Rosa quadrangle1:250000
1972 USGS Healdsburg quadrangle1:100000 - 2 printings

Listed places nearby

4 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
Swartz Creek Bridge on Aetna Springs Road	6.7 miles	2005
Aetna Springs Resort	7.0 miles	1987
Elmshaven	7.3 miles	1993
Pope Street Bridge	7.7 miles	1972

Sources for this property

National Archives record	The nomination case file for reference 05000777 in Record Group 79.
Napa County	All 88 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.