You Can Now Walk Underground From The Commuter Rail At North Station To The T

The walk for people arriving by commuter trains at Boston's North Station to nearby subway stops is now a lot more comfortable and safe.

A 250-foot pedestrian tunnel connecting the train station with Orange and Green line platforms opened Sunday, ensuring pedestrians won't have to endure rain and snow and cold. They also won't have to dodge traffic on Causeway Street outside one of the city busiest transportation hubs and the TD Garden sports arena.

The tunnel is one part of a $100 million two-year expansion project for the Garden.

The tunnel had been scheduled to open in December.

It is wedged between the Orange and Green line tunnels.