AMP: 25
Location: Boston Rd and Forge Village Rd, Groton
Reassurance shield for Route 119 as 225 joins 119.
AMP: 23
Location: Boston Rd and Gay Rd, Groton
Another reassurance shield omitting Route 225 a mile later.
AMP: 22
Location: Boston Rd and Old Ayer Rd, Groton
225!
AMP: 21
Location: Main St and Lowell Rd, Groton
As we enter Groton center, we’ll approach Route 40.
AMP: 21
Location: Main St and Lowell Rd, Groton
Follow 40 east to Westford and Chelmsford.
