AMP: 2
Location: Chelmsford Rd and Brick Kiln Rd, Billerica
Just after US 3, we’ll enter Billerica.
AMP: 3
Location: Chelmsford Rd and Boston Rd, Billerica
About a mile later, we’ll approach Route 3A.
AMP: 3
Location: Chelmsford Rd and Boston Rd, Billerica
Turn left for 3A north. 129 east will join 3A south, by turning right, for a bit over a mile.
N to MA 110, S to MA 129
N to I-495, S to MA 62
