US 202 and Route 10 enter the Bay State at the "Congamond Notch" in Southwick, a southward jog in the state line that includes Congamond Lake. North of Westfield, US 202 turns eastward toward Holyoke, crosses the Connecticut River on the Joseph E. Muller Bridge and crosses the South Hadley Falls Interchange, traversing MA 116 and MA 33 toward Belchertown. After crossing MA 9, it then heads north along the west side of the Quabbin Reservoir through New Salem toward Athol. This section of US 202 has been dubbed the Daniel Shays Highway, named for a Revolutionary War veteran who led an insurrection against the state government of Massachusetts. US 202 meets Massachusetts Route 2 at Orange, and runs along the two-lane freeway to Phillipston. There, it diverges to the north again as a two-lane road.