The largest earthquake in recorded US history happened on 3/27/1964. At 9.2 it was the second largest since earthquakes have been recorded in a manner that allows calculation of magnitudes. Among other things, it affected the Alaska Railroad and some former railroad properties. USGS has some photos:
[
libraryphoto.cr.usgs.gov]
If that link doesn't work, try [
earthquake.usgs.gov], scroll down to Historic Photos & Videos, click on 1964 Earthquake Photos, and search for the keyword 'railroad'.
Enjoy (???).