BlockBefore
Photograph of EFP Bridge over Owl Creek
Photograph by Clayton B. Fraser, Public domain. Via Wikimedia Commons.

EFP Bridge over Owl Creek

Listed on the National Register of Historic Places in 1985.

From the record

One of 12 National Register listings published here for Hot Springs County · listed in 1985 · category: Structure.

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. Cty. Rd. CN15-28, Thermopolis, 82443
  • When was it listed? February 1985
  • Category. structure
  • Also known as. Vehicular Truss and Arch Bridges in Wyoming TR
  • Census division. Thermopolis West
  • Architect. Monarch Engineering Co.
  • National Register reference number. 85000424 - 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

14 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 14 fires within 5 miles of EFP Bridge over Owl Creek between 1992 and 2018, burning about 3,918 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/undetermined7
Natural4
Power generation/transmission/distribution2
Debris and open burning1

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
18 September 2016Missing data/not specified/undetermined23 acresWorland Field OfficeMM8
21 August 2015Missing data/not specified/undeterminedunder an acreWorland Field OfficeSEVEN
12 August 2015Natural2.0 acresWorland Field OfficeMISSOURI FLAT
1 August 2018Debris and open burning9.0 acresHotsprings CountyHIENZE
9 July 2000Natural3,840 acresWind River AgencyMUDDYCRK
30 July 2011Missing data/not specified/undeterminedunder an acreWorland Field OfficeJONES ROAD
3 July 1996Missing data/not specified/undeterminedunder an acreWyoming State Forestrynot named
10 July 1996Missing data/not specified/undeterminedunder an acreWyoming State Forestrynot named

Every fire recorded in Hot Springs County

Mines and quarries near this property

1 within 5 miles

Regional context, not property-specific evidence. The federal mineral resources record lists 1 working within 5 miles of EFP Bridge over Owl Creek: 1 past producer. None of them still produces. What was taken out: 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.

Where SiteCommodity StatusRecorded
Owl Creek PitSand and Gravel, ConstructionPast Producer

Every working recorded in Hot Springs County

Storms near this property

55 since 1996

Regional context, not property-specific evidence. The National Weather Service names Thermopolis, the town this property stands in, in 55 storm reports between 1996 and 2025: 25 hail, 18 thunderstorm wind, 5 flash flood, 3 funnel cloud. The reports record 1 death and 1 injury. 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
August 2000WildfireThermopolis1 killed, 1 hurtno account filed
May 2015Flash FloodThermopolis$1,500,000Very heavy rain fell in southern Hot Springs County. This triggered numerous mud and rock slides, some tumbling several hundred feet or more to the bottom of the Wind River Canyon. State Highway 789 through the canyon was covered with mud, rock, and debris in several locations between mileposts 120 and 123. One Wyoming Department of Transportation employee was briefly trapped in his front-end loader as he tried to clear away small slides at the onset of the event. The massive amount of debris on the highway resulted in the closure of the road from Sunday afternoon, May 24, until Wednesday morning, May 27. Additional slides on the west side of the Wind River Canyon destroyed several sections of railroad track that resulted in a halt of train traffic for several days.
September 2024Tornado (EF0)Thermopolis$50,000A brief landspout tornado touched down in downtown Thermopolis, near the intersection of US Hwy 20 and WY Hwy 120. Maximum winds were estimated between 65 to 75 mph as it caused damage to sheet metal roofing and car windows.
June 2015HailEast Thermopolis$20,000Two inch diameter hail fell in the Wind River Canyon knocking out windows in vehicles traveling State Highway 789.
July 2009Thunderstorm WindThermopolis$3,000Microburst winds of 50 to 60 mph uprooted a 50-foot Cottonwood tree and blew a one-foot diameter branch about 50 feet in Hot Springs State Park. The wind was also responsible for moving a metal shed across a street near the Hot Springs County fairgrounds.
July 2025Thunderstorm WindThermopolis-A 63 mph wind gust was reported on Boysen Peak.
July 2025HailThermopolis-The public reported penny to quarter size hail in north end of Wind River Canyon.
August 2025Thunderstorm WindThermopolis-Wind gusts as high as 60 mph were reported around Thermopolis. At Hot Springs State Park, large tree branches were downed.
May 2019HailThermopolis-A trained spotter reported penny size hail in Thermopolis.
August 2019Thunderstorm WindThermopolis-An outflow boundary moved through Thermopolis, Wyoming and brought a 61 mph wind gust to the fire station just south of downtown Thermopolis.
July 2018HailThermopolis-Trained spotters reported up to quarter size hail around Thermopolis.
May 2018Funnel CloudEast Thermopolis-Several trained spotters reported a funnel cloud to the east-southeast of Thermopolis over the Owl Creek Range.
August 2016HailThermopolis-Hail up to the size of nickels was reported in Thermopolis. Most of the hail was pea-sized and it accumulated up to an inch deep in some places.
May 2015Flash FloodThermopolis-Heavy rain caused flooding near the town of Thermopolis. South of Thermopolis, Buffalo Creek overflowed its banks and flooded nearby low lying areas. A mobile home community experienced flooding in East Thermopolis as small creeks and streams were inundated with water.
July 2015Thunderstorm WindThermopolis-Several wind gusts over 58 mph were recorded at Thermopolis with a peak speed of 67 mph. The gusts were the result of weak convection and a strong pressure gradient ahead of an approaching cold front.
September 2014HailThermopolis-A long-track thunderstorm produced penny sized hail in Thermopolis.
June 2012Thunderstorm WindThermopolis-A thunderstorm formed over the Wind River Basin and moved north over the Owl Creek Mountains producing a 63 mph wind gust at an automated station on Boysen Peak.
June 2012Thunderstorm WindThermopolis-A thunderstorm formed over the Wind River Basin and moved north over the Owl Creek Mountains producing a wind gust of 62 mph at an automated station on the west side of Thermopolis.
July 2012Thunderstorm WindThermopolis-A strong thunderstorm produced wind gusts to 69 mph at an observation site atop Boysen Peak.
July 2012Thunderstorm WindThermopolis-A strong thunderstorm produced a 59 mph wind gust at an automated weather station on Boysen Peak.
July 2009HailEast Thermopolis-Quarter sized hail fell at a ranch near Buffalo Creek Road in eastern Hot Springs County.
July 2009HailThermopolis-Penny sized hail was reported west of Thermopolis near Missouri Flat Road.
July 2009HailThermopolis-Hot Springs County Dispatch and a spotter reported quarter sized hail in Thermopolis.
August 2009HailThermopolis-Hail as large as nickels fell in the town of Thermopolis.
July 1998Thunderstorm WindThermopolis-Large tree/power line down
August 2007HailThermopolis-no account filed
July 2006Flash FloodThermopolis-no account filed
May 2005HailThermopolis-no account filed
August 2005HailThermopolis-no account filed
July 2004HailThermopolis-no account filed
September 2002Thunderstorm WindThermopolis-no account filed
June 2001Thunderstorm WindThermopolis-no account filed
July 2001Flash FloodThermopolis-no account filed
August 2001HailThermopolis-no account filed
July 2001Thunderstorm WindThermopolis-no account filed
May 2000HailThermopolis-no account filed
July 2000WildfireThermopolis-no account filed
July 2000HailThermopolis-no account filed
August 2000WildfireThermopolis-no account filed
August 1999Thunderstorm WindThermopolis-no account filed
August 1999Flash FloodThermopolis-no account filed
August 1999Thunderstorm WindThermopolis-no account filed
August 1999Funnel CloudThermopolis-no account filed
June 1999HailThermopolis-no account filed
August 1999Thunderstorm WindThermopolis-no account filed
July 1998HailThermopolis-no account filed
July 1998HailThermopolis-no account filed
July 1998HailThermopolis-no account filed
August 1998Thunderstorm WindThermopolis-no account filed
August 1998HailThermopolis-no account filed
August 1997HailThermopolis-no account filed
June 1997Funnel CloudThermopolis-no account filed
June 1997HailThermopolis-no account filed
July 1996HailThermopolis-no account filed
July 1996Thunderstorm WindThermopolis-no account filed

Every storm recorded in Hot Springs 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 recordThe nomination case file for reference 85000424 in Record Group 79.
Wikipedia articleCommunity-written account of this property, licensed CC BY-SA.
Hot Springs 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.