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Photograph of Chilson Bridge
Photograph by Magicpiano, CC BY-SA 4.0. Via Wikimedia Commons.

Chilson Bridge

Listed on the National Register of Historic Places in 1993.

From the record

“The Chilson Bridge, near Edgemont, South Dakota, is a bridge which brings a local road, formerly U.S. It was built in 1929 and was listed on the National Register of Historic Places in 1993.”

Wikipedia article Chilson Bridge, CC BY-SA 4.0.

One of 12 National Register listings published here for Fall River County · listed in 1993 · 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. Local rd. over Burlington Northern RR tracks, Edgemont, 57747
  • When was it listed? December 1993
  • Category. structure
  • Also known as. Historic Bridges in South Dakota MPS; Historic Bridges in South Dakota MPS
  • Unorganized territory. Northeast Fall River
  • National Register reference number. 93001287 - 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

96 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 96 fires within 5 miles of Chilson Bridge between 1992 and 2020, burning about 22,718 acres in total. 65 started naturally. 1 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
Natural65
Equipment and vehicle use12
Missing data/not specified/undetermined6
Debris and open burning3
Railroad operations and maintenance3
Power generation/transmission/distribution3
Misuse of fire by a minor2
Fireworks1
Arson/incendiarism1

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

DateCause SizeReported by Name on the report
5 September 2007Equipment and vehicle useunder an acreSouth Dakota Wildland Fire Suppressionnot named
5 September 2000Natural6.0 acresSouth Dakota Wildland Fire SuppressionSTONE CABIN
3 September 1996Naturalunder an acreBlack Hills National ForestSTONE QUARRY #2
26 September 2001Power generation/transmission/distribution10,547 acresBlack Hills National ForestWEST HELL CANYON
22 September 1994Natural7.0 acresSouth Dakota Wildland Fire SuppressionDEVIL CANYON
2 September 2015Equipment and vehicle use2.8 acresSouth Dakota Wildland Fire SuppressionREPEATER
19 September 2003Natural3.0 acresSouth Dakota Wildland Fire Suppressionnot named
15 September 1994Missing data/not specified/undetermined585 acresSouth Dakota Wildland Fire SuppressionCHILSON CANYON

Every fire recorded in Fall River County

Mines and quarries near this property

10 of 41 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 41 workings within 5 miles of Chilson Bridge: 36 past producers, 4 occurrences, 1 producer. 1 still produces. What was taken out: Uranium, Sand and Gravel, Construction, Stone, Dimension, Flagstone. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Where SiteCommodity StatusRecorded
Edgemont Grindstone CoFlagstonePast Producer
Edgemont QuarryStone, DimensionPast ProducerSandstone
Gravel PitsSand and Gravel, ConstructionPast Producer
Gravel PitsSand and Gravel, ConstructionPast Producer
Accidental No. 1UraniumPast Producer
Accidental No. 10UraniumPast Producer
Accidental No. 3UraniumOccurrence
BaxterUraniumPast Producer
Beadle GroupUraniumPast Producer
CarabouUraniumPast Producer

Every working recorded in Fall River County

Storms near this property

60 of 125 shown

Regional context, not property-specific evidence. The National Weather Service names Edgemont, the town this property stands in, in 125 storm reports between 1993 and 2025: 63 thunderstorm wind, 52 hail, 4 flash flood, 2 funnel cloud. 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.

WhenEvent Place namedHarm What the report says
June 2012HailEdgemont$100,000Hail from golfball to softball size fell.
June 2008Flash FloodEdgemont$100,000no account filed
July 2008Thunderstorm WindEdgemont$50,000Thunderstorm winds blew down a cement granary, a 20 foot high barn, and several power poles.
August 2009Thunderstorm WindEdgemont$30,000Strong wind gusts blew out the doors of an airport hanger and two small planes in the hangar received minor damage.
July 2014HailEdgemont$15,000Racquet ball sized hail broke windows on a car and damaged siding.
May 2018Flash FloodEdgemont$10,000Two to four inches of rain in two hours caused minor flooding. Runoff washed gravel off a couple of county roads and water ran over at least one county road when the culvert became plugged with debris. The Cheyenne River at Edgemont quickly rose about 5 feet and peaked around 1700 cfs.
June 2010HailEdgemont$6,000Golf ball sized hail caused minor damage to automobiles.
July 2020HailEdgemont$5,000Hail damaged vehicles.
July 2015Thunderstorm WindEdgemont$5,000Trees and large branches were blown down on every street in town. Shingles were peeled and metal panels were curled off roofs.
August 2010Thunderstorm WindEdgemont$5,000Strong winds downed trees and power poles in Edgemont, with electric service out for as long as 24 hours.
June 1999Thunderstorm WindEdgemont$5,000Strong winds from thunderstorms blew over several trees and fences in the community.
July 1997LightningEdgemont$5,000no account filed
June 2025HailEdgemont-Spotter reported nickel to quarter size hail. Ongoing during call around 527 pm.
June 2025HailEdgemont-COOP submitted entry.
June 2025Thunderstorm WindEdgemont-SD mesonet recorded wind gust.
June 2025Thunderstorm WindEdgemont-SD mesonet recorded wind gust.
July 2025Thunderstorm WindEdgemont-SD Mesonet recorded wind gust.
July 2025Thunderstorm WindEdgemont-SD Mesonet recorded wind gust.
July 2025Thunderstorm WindEdgemont-SD Mesonet recorded wind gust.
August 2025Thunderstorm WindEdgemont-SD Mesonet recorded wind gust.
August 2024Thunderstorm WindEdgemont-The spotter estimated wind gusts at near 70 mph.
June 2021Thunderstorm WindEdgemont-Wind gusts were estimated at 60 mph.
August 2020HailEdgemont-Hail covered the ground.
August 2019Thunderstorm WindEdgemont-The spotter estimated wind gusts at 60 mph.
June 2016Thunderstorm WindEdgemont-Wind gusts were estimated between 60 and 65 mph.
September 2016Thunderstorm WindEdgemont-Wind gusts were estimated at 60 mph.
July 2016Thunderstorm WindEdgemont-Wind gusts were estimated at 60 mph.
June 2014Thunderstorm WindEdgemont-Pea sized hail accompanied the strong wind gusts.
June 2014Thunderstorm WindEdgemont-Large branches were broken off trees.
August 2013Thunderstorm WindEdgemont-Wind gusts were estimated at 60 mph.
June 2012Thunderstorm WindEdgemont-Wind gusts were estimated at 60 mph.
August 2012Thunderstorm WindEdgemont-Wind gusts were estimated at 60 mph.
July 2012Thunderstorm WindEdgemont-Wind gusts were estimated at 60 mph.
June 2011Funnel CloudEdgemont-A small funnel cloud was observed north of Edgemont. An aerial survey determined it did not reach the ground.
June 2009Thunderstorm WindEdgemont-None.
July 2009Thunderstorm WindEdgemont-A spotter estimated wind gusts of 60 mph.
July 2009Thunderstorm WindEdgemont-Six inch diameter tree branches were broken off by strong wind gusts.
August 2008Thunderstorm WindEdgemont-Dime sized hail also fell with the storm.
July 2000WildfireEdgemont-Lightning caused a wildfire that burned 150 acres to the east of Edgemont.
August 2024Thunderstorm WindEdgemont-no account filed
May 2024Thunderstorm WindEdgemont-no account filed
July 2024HailEdgemont-no account filed
September 2024Thunderstorm WindEdgemont-no account filed
April 2023Thunderstorm WindEdgemont-no account filed
July 2023Thunderstorm WindEdgemont-no account filed
July 2023Thunderstorm WindEdgemont-no account filed
July 2023Thunderstorm WindEdgemont-no account filed
July 2023Thunderstorm WindEdgemont-no account filed
August 2023HailEdgemont-no account filed
July 2022Thunderstorm WindEdgemont-no account filed
June 2022HailEdgemont-no account filed
June 2022HailEdgemont-no account filed
June 2022HailEdgemont-no account filed
June 2022HailEdgemont-no account filed
June 2022HailEdgemont-no account filed
June 2022HailEdgemont-no account filed
June 2021Thunderstorm WindEdgemont-no account filed
July 2021Thunderstorm WindEdgemont-no account filed
July 2021HailEdgemont-no account filed
August 2021Thunderstorm WindEdgemont-no account filed

Every storm recorded in Fall River 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.

Listed places nearby

2 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.

Photograph PropertyDistance Listed
Bartlett-Myers Building5.0 miles2006
Arthur and Ellen Colgan House5.0 miles2017

Sources for this property

National Archives recordThe nomination case file for reference 93001287 in Record Group 79.
Wikipedia articleCommunity-written account of this property, licensed CC BY-SA.
Fall River CountyAll 12 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.