Conant Creek Pegram Truss Railroad Bridge

Built in 1911. Listed on the National Register of Historic Places in 1997.

From the record

“The Conant Creek Pegram Truss Railroad Bridge, in Fremont County, Idaho near Grainville, Idaho and Ashton, Idaho, was built in 1894. It brought a railroad over the Conant Creek, 1 mile south of the junction of Squirrel Rd. and the old Ashton-Victor railroad spur tracks.”
Wikipedia article Conant Creek Pegram Truss Railroad Bridge, CC BY-SA 4.0.

One of 14 National Register listings published here for Fremont County · listed in 1997 · category: Structure · built in 1911.

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. Over the Conant Creek. 1 mi. S of jct. of Squirrel Rd. and Old Ashton-Victor RR spur tracks, Grainville, 83420
When was it listed? July 1997
Category. structure
Also known as. Pegram Truss Railroad Bridges of Idaho MPS
Census division. Ashton
When was it built? 1911
National Register reference number. 97000756 - 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

4 since 1994

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 4 fires within 5 miles of Conant Creek Pegram Truss Railroad Bridge between 1994 and 2017, burning about 15 acres in total. 1 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/undetermined	2
Misuse of fire by a minor	1
Natural	1

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
4 September 1994	Natural	under an acre	Caribou-Targhee National Forest	not named
6 August 2017	Missing data/not specified/undetermined	13 acres	Idaho Falls District	FREMONT COUNTY ASSIST 1
21 August 2003	Misuse of fire by a minor	1.8 acres	Caribou-Targhee National Forest	ASHTON ASSIST
15 August 2015	Missing data/not specified/undetermined	under an acre	Caribou-Targhee National Forest	BOY SCOUT ROAD

Every fire recorded in Fremont County

Mines and quarries near this property

4 within 5 miles

Regional context, not property-specific evidence. The federal mineral resources record lists 4 workings within 5 miles of Conant Creek Pegram Truss Railroad Bridge: 4 producers. All of them still produce. 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.

Site	Commodity	Status
Gravel Pit	Sand and Gravel, Construction	Producer
Gravel Pit	Sand and Gravel, Construction	Producer
Gravel Pit	Sand and Gravel, Construction	Producer
Gravel Pit	Sand and Gravel, Construction	Producer

Every working recorded in Fremont 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	Property	Distance	Listed
	Independent Order of Odd Fellows Hall	5.2 miles	1997
	Rankin Auto Court	6.0 miles	2022

Sources for this property

National Archives record	The nomination case file for reference 97000756 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Fremont County	All 14 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.