Upper Iowa River Bridge

Listed on the National Register of Historic Places in 1998.

From the record

“The Upper Iowa River Bridge, also known as the Hartley Bridge, is a historic structure located southeast of Dorchester, Iowa, United States. It spans the Upper Iowa River for 122 feet (37 m).”
Wikipedia article Upper Iowa River Bridge, CC BY-SA 4.0.

One of 21 National Register listings published here for Allamakee County · listed in 1998 · 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. Mays Prairie Rd. over Upper Iowa R., Dorchester, 52151
When was it listed? June 1998
Category. structure
Also known as. Highway Bridges of Iowa MPS
Township. Union City township
National Register reference number. 98000772 - 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

1 since 2018

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 1 fire within 5 miles of Upper Iowa River Bridge in 2018, burning about 1 acre in total. None 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	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
30 April 2018	Missing data/not specified/undetermined	1.0 acres	Iowa Department of Natural Resources	not named

Every fire recorded in Allamakee County

Mines and quarries near this property

10 within 5 miles

Regional context, not property-specific evidence. The federal mineral resources record lists 10 workings within 5 miles of Upper Iowa River Bridge: 6 past producers, 2 unknowns, 1 occurrence, 1 producer. 1 still produces. What was taken out: Stone, Crushed/Broken, Lead, 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	Recorded
Hatfield and Clayton Prospects	Lead	Occurrence	Galena
Unknown	Sand and Gravel, Construction	Past Producer
Meyer Quarry	Stone, Crushed/Broken	Past Producer
Riehms Quarry	Stone, Crushed/Broken	Producer
Unknown	Stone, Crushed/Broken	Past Producer
Unknown	Stone, Crushed/Broken	Unknown
Unknown	Stone, Crushed/Broken	Past Producer
Unknown	Stone, Crushed/Broken	Unknown
Unknown	Stone, Crushed/Broken	Past Producer
Wilde Quarry	Stone, Crushed/Broken	Past Producer

Every working recorded in Allamakee County

Storms near this property

15 since 1996

Regional context, not property-specific evidence. The National Weather Service names Dorchester, the town this property stands in, in 15 storm reports between 1996 and 2016: 8 hail, 5 thunderstorm wind, 1 flash flood, 1 heavy rain. 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.

When	Event	Place named	Harm	What the report says
August 2007	Flash Flood	Dorchester	$500,000	Rounds of thunderstorms led to significant flash flooding over much of the county, but especially the northern parts where mudslides occurred. Rainfall was 2-5 over the county. Damage was mainly to infrastructure.
May 1996	Hail	Dorchester	$130,000	no account filed
May 1996	Thunderstorm Wind	Dorchester	$40,000	no account filed
May 2000	Hail	Dorchester	$15,000	no account filed
May 2000	Hail	Dorchester	$7,500	no account filed
August 2000	Thunderstorm Wind	Dorchester	$6,000	no account filed
May 2000	Hail	Dorchester	$4,500	no account filed
June 1998	Thunderstorm Wind	Dorchester	$4,000	no account filed
June 1997	Thunderstorm Wind	Dorchester	$4,000	no account filed
June 2005	Thunderstorm Wind	Dorchester	$1,500	no account filed
September 2016	Heavy Rain	Dorchester	-	The COOP observer near Dorchester measured 4.21 inches of rain.
April 2014	Hail	Dorchester	-	Quarter sized hail fell near Dorchester.
August 2003	Hail	Dorchester	-	no account filed
April 2002	Hail	Dorchester	-	no account filed
May 2000	Hail	Dorchester	-	no account filed

Every storm recorded in Allamakee 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
	Thomas Reburn Polygonal Barn	6.8 miles	1986
	Iron Post	8.0 miles	1976

Sources for this property

National Archives record	The nomination case file for reference 98000772 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Allamakee County	All 21 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.