Directions

If using an app for directions, please note that Waze tends to work better than Google Maps, which often brings people to the rear of the property instead of the front gate.

From Worcester: 

Take I-290 E and use exits 22/23 on the right to take I-190 N. Get off on exit 14 and turn left on MA-12 N. At the traffic circle, take the first exit to stay on MA-12 N. The 228 in Sterling will be on your left.
 
From Springfield: 
 
Take I-91 N. Take exit 6 for I-291 E/US-20 E toward I-90/Mass. Pike E/Boston. Keep left, and follow signs for I-291 E. Continue onto I-291 E/US-20 E. Continue to follow I-291 E. Take exit 7 to merge onto I-90 E/Massachusetts Turnpike toward Boston. Take exit 90 to merge onto I-290 E toward Worcester. Use the right 2 lanes to take exit 22-23 for I-190 N toward MA-12/Holden/Fitchburg. Continue onto I-190 N. Take exit 14 for MA-12 toward Sterling/Clinton. The 228 in Sterling will be on your left.
 
From Boston:
 
Take exit 28B to merge onto I-95 S toward Waltham. Use the right 2 lanes to take exit 50A-50B for US-3 N/Middlesex Turnpike toward Lowell/Burlington. Keep left to continue toward US-3 N. Keep right at the fork to continue on Exit 50A, and follow signs for I-95 S/US-3 N/Lowell. Continue onto US-3 N. Use the right 2 lanes to take exit 81B-C to merge onto I-495 S toward Marlboro. Take exit 78B to merge onto MA-2 W toward Leominster. Take exit 101 to I-190 S/Leominster/Worcester. Take exit 14 for MA-12 N. At the traffic circle, take the 1st exit onto MA-12 N. The 228 in Sterling will be on your left.
 
From New Hampshire:
 
Take I-89 S. Take the exit onto I-93 S toward Manchester/Boston. Keep left at the fork to continue on I-293 S/Everett Turnpike, follow signs for Interstate 293 S/Manchester Airport/Manchester/Nashua. Keep left at the fork to continue on Everett Turnpike, and follow signs for Manchester Airport/Merrimack/Milford. Continue onto US-3 S. Use the right 2 lanes to take exit 81A-81B-81C for I-495/MA-110 toward Marlboro/Lawrence/Chelmsford. Keep right at the fork to continue on Exit 81B, follow signs for I-495 S/Marlboro, and merge onto I-495 S. Take exit 78B to merge onto MA-2 W toward Leominster. Take exit 101 toward I-190 S/Leominster/Worcester.  Take exit 14 for MA-12 N. At the traffic circle, take the 1st exit onto MA-12 N. The 228 in Sterling will be on your left.