along Route 3 NB during the week of December 7, 2020. The work has since been completed as of January 2021. The exits will be numbered based on mileage from the start of Route 3 at the Sagamore Bridge. They are referenced in the table below as "New Exit". Potential road-widening project MassDOT is looking into the possibility, in a similar manner to what happened to a 14+ mile section of Route 128 in the 2010s, of widening Route 3 from I-93 to the Sagamore Bridge from four to six lanes (as has already been done within the US 44 road concurrency between exits 15 and 16 near Plymouth) with new bridges and new on- and off-ramps, and will include upgraded interchanges with new acceleration and deceleration lanes. The project is expected to cost $256 million. Exit list Route 3 was one of the freeways whose exits were once numbered with the "25 is 128" system, in which the Braintree Split was numbered "Exit 25" (due to it being the exit for Route 128), with numbers increasing away from Boston and decreasing toward Boston. Under the old system, the Sagamore Rotary was (on paper) "Exit 43." When the first of the highway were resurfaced in 1975-76, the new numbers were instituted in that section. The Braintree section wasn't resurfaced in 1978, leaving a two-year gap when half the highway was on the new system while the other half was on the old system. During that time, the exit to Route 14 was "Exit 11" northbound and "Exit 33" southbound. Exit numbers on Route 3 were to be changed to those based on highway mileposts under a MassDOT project due to start in 2016, but this project was postponed. On November 18, 2019, MassDOT confirmed that, beginning in late summer 2020, the exit renumbering project will begin. The exit renumbering was done between December 1-14, 2020. References Pilgrims Highway (MA 3) on Bostonroads.com 1952 Shell Oil Sectional Map No. 1, New England States 1960 AAA Map of Southern New England 1966 ESSO New England Map 1971 ESSO Southern New England Map Responses to post by Bob Malme on newsgroup ne.transportation titled "MA Roadtrip Observations" posted 6/28/07. External links Streets in Braintree, Massachusetts Duxbury, Massachusetts Massachusetts Route Kingston, Massachusetts 003 Plymouth, Massachusetts Pembroke, Massachusetts Marshfield, Massachusetts Norwell, Massachusetts Hanover, Massachusetts Rockland, Massachusetts Hingham, Massachusetts Weymouth, Massachusetts Quincy, Massachusetts Milton, Massachusetts Transportation in