Construction
The station has multiple tracks because there are multiple railroads.
The main line from New Haven merges with Pan Am Railways. It's the latest name for Springfield Terminal which was a combination of the Delaware & Hudson, Boston & Maine, and Maine Central Railroads.
CSX (the former Boston & Albany) runs perpendicular to the Amtrak main line. Amtrak's Lake Shore Limited runs on these tracks (# 1 and #2).
Looks like canopies are being installed on tracks 3 and 4.
Photo by Michael Ditkoff