Portland Bridge

Built in 1907. Listed on the National Register of Historic Places in 1985.

From the record

One of 25 National Register listings published here for Fremont County · listed in 1985 · category: Structure · built in 1907.

Sources: the National Register database, National Park Service

The listing

Listing status. The Park Service records this property as Removed.
What is counted as historic. The nomination lists 1 structure as contributing to the listing.
Address. SR 120, Portland, 81226
When was it listed? February 1985
Category. structure
Also known as. Vehicular Bridges in Colorado TR
Census division. Penrose-Portland
When was it built? 1907
National Register reference number. 85000210 - assigned by the National Park Service when the property was listed.

Fires near this property

66 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 66 fires within 5 miles of Portland Bridge between 1992 and 2020, burning about 115 acres in total. 3 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	46
Recreation and ceremony	6
Equipment and vehicle use	5
Natural	3
Debris and open burning	3
Smoking	2
Misuse of fire by a minor	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
24 September 2016	Equipment and vehicle use	under an acre	Penrose Volunteer Fire Department	UNKNOWN
13 September 2017	Missing data/not specified/undetermined	under an acre	Williamsburg Volunteer Fire Department (Florence Fire Protection District)	UNKNOWN
7 August 2014	Missing data/not specified/undetermined	under an acre	Williamsburg Volunteer Fire Department (Florence Fire Protection District)	UNKNOWN
28 August 2016	Natural	under an acre	Penrose Volunteer Fire Department	UNKNOWN
21 August 2014	Missing data/not specified/undetermined	under an acre	Williamsburg Volunteer Fire Department (Florence Fire Protection District)	UNKNOWN
18 August 2015	Missing data/not specified/undetermined	under an acre	Penrose Volunteer Fire Department	UNKNOWN
16 August 2015	Missing data/not specified/undetermined	under an acre	Penrose Volunteer Fire Department	UNKNOWN
12 August 2016	Recreation and ceremony	1.5 acres	Penrose Volunteer Fire Department	UNKNOWN

Every fire recorded in Fremont County

Mines and quarries near this property

10 of 12 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 12 workings within 5 miles of Portland Bridge: 10 producers, 1 occurrence, 1 past producer. 10 still produce. What was taken out: Stone, Crushed/Broken, Clay, Sand and Gravel, Construction, Silica. 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
Artesian Well #22	Geothermal	Producer
Unidentified Placer Occurrence	Gold	Occurrence	Placer
Unknown	Limestone, General	Producer	Limestone
White King, State Rock	Silica	Producer
Gravel Pit	Sand and Gravel, Construction	Producer
Gravel Pit	Sand and Gravel, Construction	Producer	Sand and Gravel
Beaver Creek	Clay	Producer
Gravel Pit	Stone, Crushed/Broken	Producer
Portland Limestone Quarry	Stone, Crushed/Broken	Producer
Quarry	Stone, Crushed/Broken	Past 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

5 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
Rio Grande Railroad Viaduct	3.0 miles	2002
Main Street Bridge	5.3 miles	2002
Downtown Florence Historic District	5.5 miles	2017
US Post Office-Florence Main	5.5 miles	1986
Florence High School	5.7 miles	2022

Sources for this property

National Archives record	The nomination case file for reference 85000210 in Record Group 79.
Fremont County	All 25 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.