Massachusetts Route 85

Route 85
Route 85 highlighted in red
Route information
Maintained by MassDOT
Length	21.01 mi[1] (33.81 km)
Major junctions
South end	Route 16 in Milford
Major intersections	I-495 in Milford Route 135 in Hopkinton Route 9 / Route 30 in Southborough US 20 in Marlborough Route 85 Connector in Hudson
North end	Route 117 in Bolton
Location
Country	United States
State	Massachusetts
Highway system
Massachusetts State Highway System Interstate US State
← I-84 → I-86

Route 85 is a 21.01-mile-long (33.81 km) north–south state highway in Massachusetts, United States. It passes through the heart of Boston's MetroWest region, through towns on the eastern edge of Worcester County and western edge of Middlesex County, crossing the border between the two counties four times. Throughout its entire distance, Route 85 runs parallel to I-495, never passing more than two miles from it.