Massachusetts Route 99

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Route 99 marker

Route 99
Map of eastern Massachusetts with Route 99 highlighted in red
Route information
Length: 6.40 mi[1] (10.30 km)
Major junctions
South end: Chelsea Street / New Rutherford Avenue in Boston
North end: US 1 in Saugus
Counties: Suffolk, Middlesex, Essex
Highway system
Route 98 Route 101

Route 99 is a north–south state highway in metropolitan Boston.

Route description[edit]

Route 99 begins at the intersection of New Rutherford Avenue and Chelsea Street, over the northbound tunnel of U.S. Route 1 created during the Big Dig. It continues along New Rutherford Avenue, passing onramps to Route 1 and Bunker Hill Community College before entering Sullivan Square, where Route 38 begins next to the MBTA station. It then turns northeastward onto Alford Street, crossing the Malden Bridge over the Mystic River. After passing through a small strip of Boston on the east banks of the river, the route enters Everett and becomes Broadway.

Broadway crosses through Sweetser Circle, the intersection with Route 16 and the Revere Beach Parkway. The route continues northeastward into the city of Malden, where it intersects Route 60. The route continues on through a short (0.25 miles (0.40 km)) corner of Melrose before entering Saugus. Once in Saugus the route terminates at ramps leading back to Route 1.


The Charlestown Bridge from Boston's North End into Charlestown used to be that starting point of the route; however, the latest GIS data from the Massachusetts Department of Transportation indicates that it is no longer the starting point for Route 99.[2] This probably became the case upon completion of the Big Dig's moving of Route 1.

Sweetser Circle has been the site of numerous major accidents,[3] including a gas tanker rollover early on December 5, 2007 that resulted in 9,400 U.S. gallons (36 kL) spilling, igniting and destroying 21 vehicles and two large multi-family homes.[4]

Prior to the designation as Route 99, the entire route was part of US-1 before the construction of the Northeast Expressway.

Major intersections[edit]

Route 99, as observed from the Bunker Hill Community College skywalk in Charlestown.
County Location mi km Destinations Notes
Suffolk Boston 0.00 0.00 Chelsea Street Southern terminus of Route 99 at Chelsea Street and New Rutherford Avenue
0.2 0.32 US 1 Ramp ending from southbound and to northbound U.S. Route 1.
1.1 1.8 Route 38 Southern terminus of Route 38 at Sullivan Square, Charlestown
Middlesex Everett 2.5 4.0 Route 16 Sweetser Circle: Access to Route 16 / Revere Beach Parkway
Malden 4.8 7.7 Route 60 Interchange
Essex Saugus 6.40 10.30 US 1 Northern terminus of Route 99 at returning ramps to U.S. Route 1.
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


External links[edit]

KML is from Wikidata