The
Braintree Split is the interchange of
Interstate 93/
U.S. Route 1 and
Massachusetts Route 3 located along the city line separating
Braintree and
Quincy, Massachusetts. The Braintree Split was also the southern end of
Route 128 until 1997, when Route 128 was truncated to the
I-95/
I-93 intersection in
Canton. Weekday traffic volume through the intersection averages 250,000 to 275,000 vehicles per day. The term "Braintree Split" is used as a focal point in all local radio and television traffic reports.