The new iteration relies on Madison Square Garden selling its theater to make room for an expansive one-floor concourse with soaring ceilings - allowing more spacious platforms for commuters.
Officials say the new Portal Bridge construction is on schedule.
As the Portal Bridge cutover project continues, NJ Transit officials have now asked people to work from home if possible.
The Portal Bridge cutover means service disruptions for NJ Transit and Amtrak commuters over the next four weeks. Some trains are diverted to Hoboken for the start of this temporary weekday schedule.
The big test will arrive on Tuesday, when some rail lines are diverted to Hoboken for the start of the portal cutover weekday schedule.
Starting Sunday, all rail lines except the Atlantic City Rail Line will experience temporary service adjustments during the cutover to the new Portal Bridge.