
AMP: 69
Location: Cambridge St and Wall St, Burlington
Reassurance shield as U.S. 3 drops onto a surface street for the first time since Nashua, N.H. Route 3A is concurrent with U.S. 3 here, but will remain unsigned for the duration of 3’s existence.

AMP: 68
Location: Cambridge Rd and Bedford Rd, Woburn
A mile later, we’ll enter Woburn.

AMP: 68
Location: Cambridge Rd and Bedford Rd, Woburn
Reassurance shield after Bedford Road.

AMP: 65
Location: Cambridge St and High St, Winchester
Reassurance shield a couple miles later in Winchester.

AMP: 64
Location: Mystic St and Arlington St, Arlington
A mile later, we’ll enter Arlington.

AMP: 64
Location: Mystic St and Old Mystic St, Arlington
Reassurance shield a few blocks later.

AMP: 63
Location: Mystic St and Summer St, Arlington
At Summer Street, we’ll approach Route 2A.

AMP: 63
Location: Mystic St and Summer St, Arlington
Turn right for 2A west. 2A east joins 3/3A south.

