4 ms·

Trains. There's similar scars in San Francisco. Potrero Hill & Mission District particularly.

by pinot 11y ago

refurb 11y ago
Yup. I actually noticed this one day in Noe Valley. You would have a block of old houses (early 1900's) and then in the center of the block would be buildings built in the '50s or '60s. Why is that? This is a nice zoomable map of SF from 1938 that shows why. There used to be an elevated set of train tracks that ran from 27th and Dolores down to San Jose and Randall. The rest of the tracks were at ground level. http://www.davidrumsey.com/luna/servlet/s/x0k3ok http://www.davidrumsey.com/luna/servlet/s/x0k3ok The removed the tracks and filled in the gaps with new homes.
kristopolous 11y ago
There's a site where you can see this really clearly, http://www.historicaerials.com/ http://www.historicaerials.com/ ... it's a pretty bad site but the only one I know that actually presents the data in this way. The first image: http://historicaerials.com:?layer=T1963&zoom=16&lat=34.09750190321817&lon=-118.35163593292235 http://historicaerials.com:?layer=T1963&zoom=16&lat=34.09750... ... if you go to the compare drop-down, select slide, then do 2012, you can clearly see this.
- kristopolous 11y ago
  in fact here's one I just stumbled on: https://www.google.com/maps/@33.8424464,-118.0499788,14z https://www.google.com/maps/@33.8424464,-118.0499788,14z See that giant diagonal from the top left to the bottom right that spans the length of the map?
  - Sanddancer 11y ago
    That line is in a lot of long term plans to be reopened, and in fact, work is starting on the southern half of it to be used as light rail. https://en.wikipedia.org/wiki/West_Santa_Ana_Branch https://en.wikipedia.org/wiki/West_Santa_Ana_Branch
- jsanford 11y ago
  Were you aware that Google Earth has a "History" icon that opens a slider for historic aerial data? It's pretty fantastic. One of my pasttimes is to compare different map sources/times for the same location. I wrote a python2 tool that parses any URL like the one you gave, and outputs links to the geo location at many map providers: https://github.com/jamessanford/geourl https://github.com/jamessanford/geourl
  - pinot 11y ago
    Well now I have to explorer SF in 3D in 1938. This might take a while.
arnarbi 11y ago
The one in Protrero Hill, on each side (NW and SE) seems to indicate there was, or is, a tunnel under the hill. Is that so? Edit: Found the answer myself. http://foundsf.org/index.php?title=Potrero_Commons_18th-Wisconson http://foundsf.org/index.php?title=Potrero_Commons_18th-Wisc...

Trains. There's similar scars in San Francisco. Potrero Hill & Mission District particularly.

by pinot 11y ago

Trains. There's similar scars in San Francisco. Potrero Hill & Mission District particularly.

Yup. I actually noticed this one day in Noe Valley. You would have a block of old houses (early 1900's) and then in the center of the block would be buildings built in the '50s or '60s. Why is that? This is a nice zoomable map of SF from 1938 that shows why. There used to be an elevated set of train tracks that ran from 27th and Dolores down to San Jose and Randall. The rest of the tracks were at ground level. http://www.davidrumsey.com/luna/servlet/s/x0k3ok http://www.davidrumsey.com/luna/servlet/s/x0k3ok The removed the tracks and filled in the gaps with new homes.

kristopolous 11y ago

There's a site where you can see this really clearly, http://www.historicaerials.com/ http://www.historicaerials.com/ ... it's a pretty bad site but the only one I know that actually presents the data in this way. The first image: http://historicaerials.com:?layer=T1963&zoom=16&lat=34.09750190321817&lon=-118.35163593292235 http://historicaerials.com:?layer=T1963&zoom=16&lat=34.09750... ... if you go to the compare drop-down, select slide, then do 2012, you can clearly see this.

kristopolous 11y ago
in fact here's one I just stumbled on: https://www.google.com/maps/@33.8424464,-118.0499788,14z https://www.google.com/maps/@33.8424464,-118.0499788,14z See that giant diagonal from the top left to the bottom right that spans the length of the map?
- Sanddancer 11y ago
  That line is in a lot of long term plans to be reopened, and in fact, work is starting on the southern half of it to be used as light rail. https://en.wikipedia.org/wiki/West_Santa_Ana_Branch https://en.wikipedia.org/wiki/West_Santa_Ana_Branch
jsanford 11y ago
Were you aware that Google Earth has a "History" icon that opens a slider for historic aerial data? It's pretty fantastic. One of my pasttimes is to compare different map sources/times for the same location. I wrote a python2 tool that parses any URL like the one you gave, and outputs links to the geo location at many map providers: https://github.com/jamessanford/geourl https://github.com/jamessanford/geourl
- pinot 11y ago
  Well now I have to explorer SF in 3D in 1938. This might take a while.

arnarbi 11y ago

The one in Protrero Hill, on each side (NW and SE) seems to indicate there was, or is, a tunnel under the hill. Is that so? Edit: Found the answer myself. http://foundsf.org/index.php?title=Potrero_Commons_18th-Wisconson http://foundsf.org/index.php?title=Potrero_Commons_18th-Wisc...