The storm flooded the two train tunnels that currently exist under the Hudson River, disrupting train travel throughout the Northeast.

WSJ: US funds to preserve space for NY-NJ train tunnels

Restoration of No. 1 trains to South Ferry would leave just a single section of the subway system out of service because of storm damage, the A train between Howard Beach and Rockaway Park.

WSJ: Downtown, Old Stop on Subway to Reopen

The MTA briefly used a similar strategy when it first restored service on the G train after the storm.

WSJ: PATH's Road Back Is Rocky

Storm surge there knocked out the train tracks that cross Broad Channel.

WSJ: Downtown, Old Stop on Subway to Reopen

Only a year after the Tay Bridge was completed, it collapsed during a storm while a passenger train carrying an estimated 75 people was crossing, plunging the train into the sea below and killing all on board.

UNESCO: UK goes Forth at World Heritage Conference in Bonn

Flooding from the same storm destroyed a signal array in the tunnels beneath the Hudson, and knocked out train service between New Jersey and lower Manhattan for 10 days.

WSJ: Salt Water Puts City's Subway System 'in Jeopardy'

The Metropolitan Transportation Authority was preparing for the storm by moving some sensitive equipment out of the path of the now, and by adjusting train schedules to accommodate an earlier-than-usual afternoon rush hour on Friday.

WSJ: Officials Urge Caution as Snow Starts Falling

Bus and train service that was suspended Friday night as the storm intensified was restored Saturday, and Newark Liberty Airport reopened Saturday morning after runways were closed overnight for snow removal.

WSJ: A state-by-state look at the Northeast snowstorm