The Central Artery/Tunnel Project, commonly known as the Big Dig, was a megaproject in Boston that rerouted the Central Artery of Interstate 93 (I-93), the chief highway through the heart of the city, into the 1.5-mile (2.4 km) tunnel named the Thomas P. O'Neill Jr. Tunnel. The project also included the construction of the Ted Williams Tunnel, the Leonard P. Zakim Bunker Hill Memorial Bridge over the Charles River, and the Rose Kennedy Greenway in the space vacated by the previous I-93 elevated roadway. Initially, the plan was also to include a rail connection between Boston's two major train terminals. Planning began in 1982; the construction work was carried out between 1991 and 2006; and the project concluded on December 31, 2007, when the partnership between the program manager and the Massachusetts Turnpike Authority ended.
Interstate 93 (I-93) is an Interstate Highway in the New England states of Massachusetts, New Hampshire, and Vermont in the United States. Spanning approximately 190 miles (310 km) along a north–south axis, it is one of three primary Interstate Highways located entirely within New England; the other two are I-89 and I-91. The largest cities along the route are Boston, Massachusetts, and Manchester, New Hampshire; it also travels through the New Hampshire state capital of Concord.
The Harvard Bridge is a steel haunched girder bridge carrying Massachusetts Avenue over the Charles River and connecting Back Bay, Boston with Cambridge, Massachusetts. It is the longest bridge over the Charles River at 2,164.8 feet.
The Massachusetts Turnpike is a toll highway in the US state of Massachusetts that is maintained by the Massachusetts Department of Transportation (MassDOT). The turnpike begins at the New York state line in West Stockbridge, linking with the Berkshire Connector portion of the New York State Thruway. Spanning 138 miles (222 km) along an east–west axis, the turnpike constitutes the Massachusetts section of Interstate 90 (I-90). The turnpike is the longest Interstate Highway in Massachusetts, while I-90, in full, is the longest Interstate Highway in the United States.
The Longfellow Bridge is a steel rib arch bridge spanning the Charles River to connect Boston's Beacon Hill neighborhood with the Kendall Square area of Cambridge, Massachusetts. The bridge carries Massachusetts Route 3, US Route 3, the MBTA Red Line, bicycle, and pedestrian traffic. The structure was originally known as the Cambridge Bridge, and a predecessor structure was known as the West Boston Bridge; Boston also continued to use "West Boston Bridge" officially for the new bridge. The bridge is also known to locals as the "Salt-and-Pepper Bridge" due to the shape of its central towers.
Route 2 is a 142.29-mile-long (228.99 km) major east–west state highway in Massachusetts. Along with Route 9 and U.S. Route 20 to the south, these highways are the main alternatives to the Massachusetts Turnpike/I-90 toll highway. Route 2 runs the entire length of the northern tier of Massachusetts, beginning at the New York border, where it connects with New York State Route 2, and ending near Boston Common in Boston. Most of the route is a freeway through the northern tier of Massachusetts, with the longest non-limited access segments being the western portion. Older alignments of Route 2 are known as Route 2A.
The Lieutenant William F. Callahan Jr. Tunnel is one of four tunnels, and one of three road tunnels, beneath Boston Harbor in Boston, Massachusetts. It carries motor vehicles from the North End to Logan International Airport and Route 1A in East Boston. Ordinarily, this tunnel is only used to carry traffic out of the city, and with the completion of the Big Dig it only collects traffic from I-93 southbound and downtown Boston; northbound traffic uses the Ted Williams Tunnel. As of 2016, a toll of $1.50 is charged for non-commercial two-axle vehicles with a Massachusetts E-ZPass, while non-Massachusetts E-ZPass holders are charged $1.75. Vehicles without E-ZPass are charged $2.05 through MassDOT's Pay By Plate MA program. For residents of certain Boston ZIP codes, a discount is in effect using an E-ZPass transponder, costing $0.20.
Hoggs Hollow Bridge, originally known as the Yonge Boulevard Viaduct, is a set of four separate highway bridges that span the West Branch of the Don River Valley in Toronto, Ontario, Canada, and carries 14 lanes of Highway 401. The four structures are the busiest multi-span bridge crossing in North America, surpassing the Brooklyn Bridge.
Interstate 695 was a planned six-lane auxiliary Interstate Highway in Boston, Massachusetts, that would have run through parts of Boston, Brookline, Cambridge, and Somerville.
The Grand Junction Railroad is an 8.55-mile (13.76 km) long railroad in the Boston, Massachusetts, area, connecting the railroads heading west and north from Boston. Most of it is still in use, carrying scrap either inbound or outbound to the Schnitzer scrap yard on the Everett waterfront or freight to the Chelsea Produce Market, and non-revenue transfers of Amtrak and MBTA passenger equipment between the lines terminating at North Station and South Station. The line is also notable for its railroad bridge over the Charles River that passes under the Boston University Bridge between Boston and Cambridge, Massachusetts.
The Charles River Dam Bridge, officially the Craigie Bridge, also called Craigie's Bridge or the Canal Bridge, is a six-lane bascule bridge across the Charles River in the West End neighborhood of Boston. The bridge, maintained by the Massachusetts Department of Conservation and Recreation, carries Massachusetts Route 28 next to the Green Line's Lechmere Viaduct. The Museum of Science is located on the dam and nearby piers. Charles River Dam Road connects Leverett Circle in the West End to East Cambridge, but most of the road is fixed, and the asymmetrically sited drawbridge is a short span entirely on the Boston side of the river.
The Urban Ring was a proposed project of the Massachusetts Bay Transportation Authority and the Massachusetts Department of Transportation, to develop new public transportation routes that would provide improved circumferential connections among many existing transit lines that project radially from downtown Boston. The Urban Ring Corridor is located roughly one to two miles from downtown Boston, passing through the Massachusetts cities of Boston, Chelsea, Everett, Medford, Somerville, Cambridge, and Brookline. The project was expected to convert 41,500 car trips to transit trips daily.
Route 3 is a state-numbered route in the U.S. state of Massachusetts, maintained by the Massachusetts Department of Transportation (MassDOT). Spanning approximately 56 miles (90 km) along a north–south axis, it is inventoried with U.S. Route 3 as a single route by the state. The state-numbered Route 3 travels from Bourne in the south to Cambridge in the north, while US 3 continues from Cambridge and crosses the New Hampshire state line in Tyngsborough. Mileposts on US 3 continue from those on the state-numbered Route 3.
Memorial Drive, colloquially referred to as Mem Drive, is a 3.9-mile (6.3 km) parkway along the north bank of the Charles River in Cambridge, Massachusetts.
The Charles M. Braga Jr. Memorial Bridge, also known as the Braga Bridge, is a through truss bridge that carries Interstate 195 over the Taunton River between the town of Somerset and the city of Fall River, near the mouth of the Quequechan River at the confluence with Mount Hope Bay. At just over a mile long, it is one of the longest bridges in Massachusetts. Opened to traffic on April 15, 1966, it provides an important link between Providence, Rhode Island, New Bedford, and Cape Cod.
Storrow Drive, officially James Jackson Storrow Memorial Drive, is a major crosstown parkway in Boston, Massachusetts, running east–west along the southern bank of the Charles River. It is restricted to cars; trucks and buses are not permitted on it, while pedestrian access is available via walking paths on the Charles River side of the road. Boston drivers use the route for quick access to downtown locations.
Alewife Brook Parkway is a short parkway in Cambridge and Somerville, Massachusetts. It is listed on the National Register of Historic Places. It begins at Fresh Pond in Cambridge, and heads north on the east bank of Alewife Brook, crossing into West Somerville and ending at the Mystic River on the Medford town line, where it becomes Mystic Valley Parkway. The entire length of Alewife Brook Parkway is designated as part of Massachusetts Route 16 (Route 16), while the southernmost sections are also designated as part of Route 2 and U.S. Route 3 (US 3). It is managed by the Department of Conservation and Recreation with the Massachusetts Department of Transportation responsible for bridge maintenance.
The Massachusetts Department of Transportation (MassDOT) oversees roads, public transit, aeronautics, and transportation licensing and registration in the US state of Massachusetts. It was created on November 1, 2009, by the 186th Session of the Massachusetts General Court upon enactment of the 2009 Transportation Reform Act.
The Willimansett Bridge is a steel truss bridge over the Connecticut River located between Chicopee, Massachusetts and Holyoke, Massachusetts. It carries Massachusetts state routes 116 and 141.
The Grand Junction Railroad Bridge is a steel plate girder bridge carrying the Grand Junction Railroad over the Charles River in Boston, connecting the Boston University campus to Cambridgeport. In September 2009, the Commonwealth of Massachusetts finalized an agreement to purchase several CSX rail lines in eastern Massachusetts, including the Grand Junction tracks from the Beacon Park Yard in Allston, through Cambridge. The deal was closed on June 17, 2010.
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