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PASADENA, Calif. (KTLA) — The Metro Transit Authority announced Sunday that rail and bus lines would remain open longer to accommodate the throngs of fans expected to attend a Jay Z/Justin Timberlake concert at the Rose Bowl.

The “Legends of the Summer” concert was expected to draw 60,000 fans, according to Metro spokesman Jose Ubaldo.

Parking will be difficult and traffic was likely to be heavily congested, Ubaldo added.

Rose Bowl employees were preparing for the crowds Sunday and advised ticket holders to come early, according to the stadium’s Twitter account.

Justin Timberlake and Jay-Z perform at the 55th Annual Grammy Awards in February. (Robert Gauthier / Los Angeles Times)

On-site parking opened at noon, seven hours before the concert was set to begin.

General parking was $40, preferred parking was $80 and limo or bus parking was $160.

For a complete list of final train departure times after the show and information about the Rose Bowl’s shuttle service, check Metro’s posting about the concert.