Editing Interstate 93 (section)

===Southeast Expressway===
{{Attached KML|from=Southeast Expressway (Massachusetts)}}
The Southeast Expressway was constructed between 1954 and 1959, at the same time the [[John F. Fitzgerald Expressway]] (Central Artery) was built. Its northern terminus is at exit&nbsp;15 (southbound) or 15B (northbound) (former exit&nbsp;18; Frontage Road) in [[South Boston]], a former [[Y interchange]] where the canceled [[Southwest Corridor (Massachusetts)|Southwest Corridor]]/[[I-95]] was to meet with I-93 and run concurrent northward into downtown. The southern terminus is at the Y interchange (the "[[Braintree Split]]") at exit&nbsp;7 in [[Braintree, Massachusetts|Braintree]] (the former southern terminus of [[Massachusetts Route 128|Route&nbsp;128]]). A section of the expressway, beginning south of the Savin Hill overpass and ending just before the Braintree Split, utilizes a [[zipper lane]], in which a movable barrier carves out a reversible [[high-occupancy vehicle lane]] (HOV lane) on the non-peak side of the highway during [[rush hour]]. Most of the right of way for the [[Granite Railway]] in [[Milton, Massachusetts|Milton]] and [[Quincy, Massachusetts|Quincy]] was incorporated into the expressway.<ref name=Crane>{{cite web |title = The Successor Railroads |url = http://thomascranelibrary.org/legacy/chap9.htm |publisher = [[Thomas Crane Library]] |access-date = September 12, 2017 |archive-date = March 5, 2016 |archive-url = https://web.archive.org/web/20160305010350/http://thomascranelibrary.org/legacy/chap9.htm |url-status = dead }}</ref>

On August 21, 1969, a train of three runaway locomotives burst out of what is now [[Cabot Yard]], across Frontage Road, and blocked the northbound side of the highway.<ref>[https://www.universalhub.com/comment/800012 The day some locomotives made a break for it on the Southeast Expressway]</ref>