AMP: 5 Location: Gallivan Blvd and I-93, Boston No reassurance shield as Mass. 203 begins. AMP: 5 Location: Gallivan Blvd and Hallet St, Boston Reassurance shield a few blocks later. AMP: 3 Location: Morton St and Selden St, Boston Reassurance shield a couple miles later as we head along a suburban arterial. AMP: 2 Location: … Continue reading Massachusetts Route 203, I-93/US-1/MA 1A/MA 3/MA 3A to MA 28