Veteran alt-rock band Weezer will be taking more time off from the road than originally expected. Five West Coast performances scheduled for the group’s 2009-2010 Raditude Tour have been cancelled as frontman Rivers Cuomo continues to recover from an early December tour bus accident.

“Due to the recent bus crash involving Rivers Cuomo, as per doctors orders all previously scheduled December and upcoming January Weezer shows are cancelled,” band webmaster Karl Koch wrote in an update on Weezer’s official Web site.

The effected 2010 concerts were to run from January 9 at Bill Graham Civic Auditorium in San Francisco, CA, through January 17 at Fillmore Auditorium in Denver, CO. These cancellations are in addition to the band’s final 2009 tour dates on December 7 in Boston, MA; December 9 in Washington, DC; and December 10 in Camden, NJ.

Koch also commented on the official status of the shows, noting, “At present, neither the December shows nor the upcoming January shows are being rescheduled.”

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Previously, Weezer had expressed a desire to reschedule the performances if possible. Though that is no longer an option due to Cuomo’s required recovery time, Koch did note that the band at least hopes to return to the cities affected by the cancellation in the near future.

Earlier this month, a tour bus in Weezer’s traveling caravan hit a patch of ice and slid off the road into a ditch. At the time, Cuomo was a passenger on the bus along with his wife, young daughter, family nanny, and personal assistant.

Besides Cuomo, only his assistant was injured, though she was treated and released following the accident. The singer-songwriter, however, remained hospitalized several more days with three cracked ribs, a punctured lung and cut spleen. He was only recently discharged and began his return journey — by bus, no less — back to California, as documented in a “Weezer webisode” released online by the band.

Prior to the accident, Weezer was named one of the headliners for the 2010 Bamboozle Festival in East Rutherford, NJ. The band currently remains booked for that commitment, which could end up becoming Cuomo’s first live performance since the accident.

Weezer cancelled dates:

December 7 Boston, MA Agganis Arena
December 9 Washington, DC Patriot Center
December 10 Camden, NJ Susquehanna Bank Center
January 9 San Francisco, CA Bill Graham Civic Auditorium
January 11 Irvine, CA Bren Events Center
January 13 La Jolla, CA RIMAC Arena
January 15 Phoenix, AZ Dodge Theatre
January 17 Denver, CO Fillmore Auditorium

Weezer updated itinerary:
(Dates are subject to change.)

May 2 East Rutherford, NJ Bamboozle Festival