US 3: I-95/128-SB-Burlington-Exit 33 Rt 3A: SOUTH
US 3: I-95-SB-Burlington-Exit 32 Rt 3: SOUTH
US 3: Rt3-SB-MM76.4-Billerica-Ex 76 Concord Rd: SOUTH
US 3: Rt3-NB-MM77.2-Billerica-Ex 76 Concord Rd: NORTH
US 3: 003-MM082.7NB-Lowell- Ex 81C Rt 110: NORTH
US 3: 003-MM083.7NB-Chelmsford-0.9 mi before Ex 84 Rt 4: NORTH
US 3: Rt3-SB-MM84.2-Chelmsford-0.4 mi after Ex 84 Rt 4: SOUTH
US 3: Rt3-SB-MM85.4-Chelmsford-0.3 mi before Ex 84 Rt 4: SOUTH
