Winkelman Bridge

Built in 1916. Listed on the National Register of Historic Places in 1988.

From the record

One of 100 National Register listings published here for Pinal County · listed in 1988 · category: Structure · built in 1916.

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

The listing

What is counted as historic. The nomination lists 1 structure as contributing to the listing.
Address. Old AZ 77 over the Gila River, Winkelman, 85192
When was it listed? September 1988
Category. structure
Also known as. Vehicular Bridges in Arizona MPS
When was it built? 1916
National Register reference number. 88001649 - 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

43 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 43 fires within 5 miles of Winkelman Bridge between 1992 and 2020, burning about 978 acres in total. 4 started naturally. 2 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	30
Natural	4
Recreation and ceremony	3
Misuse of fire by a minor	2
Arson/incendiarism	2
Smoking	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
30 August 2015	Missing data/not specified/undetermined	6.3 acres	Arizona Department of Forestry and Fire Management - State Office	MALPAIS HILL
3 August 2000	Recreation and ceremony	under an acre	Arizona Department of Forestry and Fire Management - State Office	ASH CREEK
27 August 2015	Missing data/not specified/undetermined	under an acre	Arizona Department of Forestry and Fire Management - State Office	CAMINO RIO
2 August 1993	Natural	under an acre	Arizona Department of Forestry and Fire Management - State Office	not named
15 August 2011	Natural	under an acre	Gila District Office	TORONADO PEAK
14 August 1993	Arson/incendiarism	5.0 acres	Arizona Department of Forestry and Fire Management - State Office	not named
7 July 2017	Missing data/not specified/undetermined	335 acres	Gila District Office	ROACH
3 July 2009	Missing data/not specified/undetermined	5.5 acres	Arizona Department of Forestry and Fire Management - State Office	DUDLEYVILLE

Every fire recorded in Pinal County

Mines and quarries near this property

10 of 32 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 32 workings within 5 miles of Winkelman Bridge: 11 producers, 9 past producers, 5 prospects, 4 occurrences. 14 still produce. What was taken out: Copper, Silica, Copper, Silver, Gold. 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
(Facility) Hayden Copper Smelter	Copper, Molybdenum	Plant
Hayden Quarry	Limestone, General	Past Producer	Sedimentary
Hayden Quarry	Stone, Crushed/Broken	Producer
Lime Pit	Calcium	Producer
Louise and Lorane Group	Lead, Silver, Copper, Gold	Prospect
Overland Mine	Water, Free	Past Producer
Regan Camp Prospects	Lead, Copper, Silver, Vanadium, Molybdenum, Gold	Past Producer	Anglesite, Copper, Descloizite, Galena, Vanadinite, Wulfenite
Rieder and Bailey Group	Copper, Gold, Sulfur-Pyrite	Occurrence
Waterfall Claims	Uranium	Prospect
Asarco Acid Plant	Sulfur, Sulfuric Acid	Producer

Every working recorded in Pinal County

Map coverage status

No historic map-sheet match is published for this property yet. That does not mean no map exists. This record needs a coordinate-quality review before it can be joined to a sheet boundary. Browse the county's mapped places while that work is pending.

Sources for this property

National Archives record	The nomination case file for reference 88001649 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Pinal County	All 100 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.