The Big Dig was a megaproject in Boston that rerouted the then elevated Central Artery of Interstate 93 that cut across Boston into the O'Neill Tunnel and built the Ted Williams Tunnel to extend Interstate 90 to Logan International Airport. Those two projects were the origin of the official name, the Central Artery/Tunnel Project. Additionally, the project constructed the Zakim Bunker Hill Bridge over the Charles River, created the Rose Kennedy Greenway in the space vacated by the previous I-93 elevated roadway, and funded more than a dozen projects to improve the region's public transportation system. Planning for the project began in 1982; the construction work was carried out between 1991 and 2006; and the project concluded on December 31, 2007. The project's general contractor was Bechtel and Parsons Brinckerhoff was the engineer, who worked as a consortium, both overseen by the Massachusetts Highway Department.
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, 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 controlled-access toll road in the U.S. state of Massachusetts that is maintained by the Massachusetts Department of Transportation (MassDOT). It runs concurrently with the entirety of Interstate 90 (I-90) within the state, and is the longest Interstate Highway in Massachusetts, spanning 138 miles (222 km) along an east–west axis.
Route 79 is a 18.47-mile-long (29.72 km) state highway in southeastern Massachusetts. The route had formerly began as a highway in Fall River, also known as the Fall River Viaduct and Western Fall River Expressway, before becoming a more rural route further north. Most of the southern expressway portion of the route was permanently closed by MassDOT in 2023 for conversion into a street level urban boulevard.
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, 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.
Interstate 495 (I-495) is an auxiliary route of I-95 in the US state of Massachusetts, maintained by the Massachusetts Department of Transportation (MassDOT). Spanning 121.56 miles (195.63 km), it is the second-longest auxiliary route in the Interstate Highway System, being roughly 11 miles (18 km) shorter than I-476 in Pennsylvania.
Route 2 is a 142.29-mile-long (228.99 km) major east–west state highway in Massachusetts, United States. 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. 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 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.
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, United States.
The Charles M. Braga Jr. Memorial Bridge, also known as the Braga Bridge, or simply, The Braga, 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, The Braga Bridge spans 1.25 miles (2.01 km) and is one of the longest bridges in Massachusetts. Opened to traffic on April 15, 1966, it provides an important link between Providence, Rhode Island, Fall River, 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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