 I-93 once had only 22 exits prior to the re-routing of I-95 onto MA 128.Due to the highway being one of the two major Interstates that enter Boston directly (Interstate 90 is the other), nearly the entire length of the highway in Massachusetts carries four lanes in each direction.Average daily traffic volumes on I-93 in the state range from 100,000 vehicles at the New Hampshire border and 150,000 vehicles at the southern end at I-95 to over 200,000 vehicles through Braintree and Quincy.