Editing Boston Post Road (section)

===Massachusetts===
;[[Douglas, Massachusetts|Douglas]]
Crosses the Massachusetts state line into the town of Douglas as Southwest Main Street. This section passes through Douglas State Forest and is one of the most remote parts of the route that is still used as a public road. A {{convert|1|mi|km|adj=on}} section here was still unpaved until 2002. At the center of Douglas, the Post Road follows [[Route 16 (Massachusetts)|Massachusetts Route 16]] eastward to East Douglas. Where Route 16 turns south, the Post Road continues east as Northeast Main Street, which leads to the Uxbridge town line. French General Lafayette traveled this road to join forces with Washington, and stopped in Douglas during the Revolutionary War.
[[Image:Stone Arch Bridge on Hartford Ave, 2013, Uxbridge MA.jpg|thumb|right|{{center|The Stone Arch Bridge in [[Uxbridge, Massachusetts]]}}]]

;[[Uxbridge, Massachusetts|Uxbridge]]
Entering Uxbridge, the name of the road changes to Hartford Avenue. Hartford Avenue is a major cross-town road and follows the route of the Post Road for its entire length. From the Douglas town line to the intersection of [[Route 122 (Massachusetts)|Massachusetts Route 122]], it is known as Hartford Avenue West; from Route 122 to the Mendon town line, it is known as Hartford Avenue East. The original stone arch bridge over the [[Blackstone Canal]] is still in use today. There was a [[American Civil War|Civil War]] encampment near the stone-arch bridge, and the road was used by troops during the [[French and Indian Wars]] and as a supply route during the [[War of 1812]]. [[George Washington]] stopped here a number of times when traveling this road, including when he took command of the [[Continental Army]] at [[Boston]] in 1775, and on his post-[[Inaugural]] tour of [[New England]] in 1789.

;[[Mendon, Massachusetts|Mendon]]
The Post Road enters the town from Uxbridge as Hartford Avenue West. It follows that road to Route 16, which follows the route of the Post Road for approximately one-half-mile eastward to Maple Street, which follows the route into Mendon town center. From there, the Post Road followed a Providence-Worcester post road south out of the village. This section is now part of Providence Street. About {{convert|1|mi|km|adj=on}} south of the town center the roads diverged. The Post Road heads east, now known as Hartford Avenue East. This road follows the original Post Road route to the Bellingham town line. Historic milestone 37 is still located along the route.[http://www.preserveamerica.gov/6-25-04PAcommunity-mendonMA.html]

;[[Bellingham, Massachusetts|Bellingham]]
The Post Road enters from Mendon as Hartford Avenue. [[Route 126 (Massachusetts)|Massachusetts Route 126]] joins the road shortly before crossing over [[Interstate 495 (Massachusetts)|Interstate 495]]. Route 126 follows the Post Road route the remainder of the way to the Medway town line.

;[[Medway, Massachusetts|Medway]]
The original Post Road from Mendon followed Village Street through Medway to the Tavern and Inn in Medway Village near the Charles River. The post road followed (present day) Village Street through Millis (part of Medway until 1885). In the early 19th century, the Hartford and Dedham Turnpike was built (now Rt 109), a straight route built through the Great Black Swamp, and up a large hill in the center of town.

;[[Millis, Massachusetts|Millis]]
The original Post Road in Millis followed Village St from Medway, crossing current Massachusetts Rt 109, and then following the current Dover Road to the location of a series of Bridges over the Charles River leading into Medfield. In the period from 1806 to 1810, the Hartford and Dedham Turnpike was built (now Route 109), nearly going broke in attempting to build a causeway over the Charles River at the Medfield town line and through the Great Black Swamp.

;[[Medfield, Massachusetts|Medfield]]
;[[Dedham, Massachusetts|Dedham]]

The upper post road (US 20) also runs through Weston, and links directly to [[The Gifford School]]