Specter, D-Pa., announced the state's share Thursday morning.
Most of the money will pay for improvements along the Keystone Corridor linking Harrisburg and Philadelphia, including the elimination of the last three public grade crossings to enhance safety. It also will finance a $750,000 study into the potential extension of the corridor west from Harrisburg to Pittsburgh.
Obama plans to announce details of the high-speed rail grants in Florida on Thursday.
