BlockFrom the record
One of 50 National Register listings published here for Monroe County · listed in 1979 · category: Structure.
Sources: the case file at the National Archives · the National Register database, National Park Service
Overseas Highway and Railway Bridges
Listed on the National Register of Historic Places in 1979. 4 historic topographic surveys show this location, the earliest from 1971.
The listing
- Address. Bridges on U.S. 1 between Long and Conch Key, Knight and Little Duck Key, and Bahia Honda and Spanish Key, Florida Keys, 33050
- When was it listed? August 1979
- Category. structure
- Census division. Middle Keys
- National Register reference number. 79000684 - 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.
Then and now
1971 to 1989The ground this property stands on, surveyed 18 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.
Fires near this property
1 since 1996Regional context, not property-specific evidence. The federal wildfire occurrence database lists 1 fire within 5 miles of Overseas Highway and Railway Bridges in 1996, burning under an 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 |
|---|---|---|---|---|
| 24 December 1996 | Missing data/not specified/undetermined | under an acre | Florida Forest Service | not named |
Maps showing this location
4 surveysUnited States Geological Survey topographic sheets whose coverage includes this point. Matched by taking the middle of the area the National Park Service maps for this listing, then testing that coordinate against the published boundary of every sheet.
- 1971 USGS Marathon quadrangle1:24000
- 1972 USGS Marathon quadrangle1:24000
- 1983 USGS Key West quadrangle1:100000 - 2 printings
- 1989 USGS Key West quadrangle1:250000
Listed places nearby
4 within 8 milesOther 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 |
|---|---|---|---|
 | George Adderley House | 0.6 miles | 1992 |
| Crane Point | 0.7 miles | 2021 | |
 | Pigeon Key Historic District | 5.4 miles | 1990 |
 | Sombrero Key Light | 7.3 miles | 2012 |
Sources for this property
| National Archives record | The nomination case file for reference 79000684 in Record Group 79. |
| Monroe County | All 50 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.