Ceremonies to mark the opening will be held Monday, but details are still being finalized, NJ Transit spokesman John Durso Jr. said.
The Pennsauken connection will provide additional access for area residents to 30th Street Station, Atlantic City, and the River Line's service between Camden and Trenton.
NJ Transit's bus Route 419 also will serve the station.
The station has a 200-foot platform with a 60-foot canopy along the light-rail River Line, and two 300-foot-long, high-level platforms have been built on either side of the elevated Atlantic City line tracks, with stairs and elevators connecting the levels.
Parking for 280 vehicles has been built in front of the station.
Federal stimulus funds are paying for the project.
NJ Transit officials hope the station will boost ridership on the lightly traveled Atlantic City line, which operates from Philadelphia with stops in Cherry Hill, Lindenwold, Atco, Hammonton, Egg Harbor City, and Absecon.
The River Line, which opened in 2004, makes 21 stops in towns along the Delaware River, including the new station.
Schedules for Atlantic City Line stops at the transfer center are at www.njtransit.com/pdf/rail/upcoming/R0090.pdf. River Line schedules are at www.njtransit.com/pdf/bus/upcoming/T0343.pdf.