The 37-year-old Fletcher is going to his fourth consecutive Pro Bowl. Kerrigan, a second-year player, gets his first trip to the exhibition game.
Their additions give the Redskins five Pro Bowl selections for the first time since 1996. They join rookie quarterback Robert Griffin III, who will miss the Pro Bowl after knee surgery; left tackle Trent Williams and special teamer Lorenzo Alexander.
Williams and Smith helped the 49ers beat the Atlanta Falcons 28-24 in the NFC championship game Sunday.
The Pro Bowl is next Sunday in Hawaii.
Copyright 2013 by The Associated Press
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