| Braintree Split | |
|---|---|
 Aerial image of the Braintree Split in 2019 | |
 | |
| Location | |
| Braintree–Quincy, Massachusetts | |
| Coordinates | 42°13′37″N 71°01′16″W / 42.227°N 71.021°W |
| Roads at junction | |
| Construction | |
| Type | Full Y |
| Maintained by | Massachusetts Department of Transportation |
The Braintree Split is the major interchange of Interstate 93 (I-93), U.S. Route 1 (US 1), and Route 3 in Braintree, Massachusetts, one of the South Shore suburbs of Boston. Traveling northbound, the routes merge into a three-way concurrency towards Boston. Traveling southbound, they divide into the concurrent I-93 and US 1 towards southeastern Massachusetts, and Route 3 towards Cape Cod.
The split is located close to the border between Braintree and Quincy. It was previously the southern terminus of Route 128, the main beltway around Boston; it shared the roadbed with I-93 and US 1 traveling towards the split before they join with Route 3. It was truncated to the junction of I-93 and I-95 in Canton in 1997; despite no longer carrying this designation, the split continues to be informally recognized as the starting point of Route 128 within Massachusetts.[1]
The Braintree Split is used as a focal point in local radio and television traffic reports.[2] In 2006, weekday traffic volume through the interchange averaged 250,000 to 275,000 vehicles daily.[3]
- ^ Chesto, Jon (August 13, 2012). "Despite federal and state agencies' efforts, a road by any other name is still Route 128". Wicked Local. Archived from the original on September 9, 2015. Retrieved June 30, 2017.
- ^ Weinreb, Michael, Traffic Report Archived December 3, 2008, at the Wayback Machine, Boston Magazine, May 2002.
- ^ "I-93/Southeast Expressway/Route 3 (Braintree Split): Operational Assessment and Potential Improvements" Archived September 19, 2010, at the Wayback Machine Boston Region Metropolitan Planning Organization, March 2006, p. 3.
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