Editing Boston Post Road (section)

===Massachusetts===
In [[Massachusetts]], the [[Norfolk and Bristol Turnpike]] was established in 1803 as a straighter route between [[Pawtucket, Rhode Island]], and [[Roxbury, Massachusetts]], mostly west of the Post Road. It is known as [[Washington Street (disambiguation)|Washington Street]] in many of the towns it passes through. [https://maps.google.com/maps?f=d&hl=en&saddr=Washington+St+Plainville,+MA&daddr=Washington+St++South+Walpole,+MA+to%3AWashington+St+Norwood,+MA+to%3AWashington+St+Dedham,+MA+to%3AWashington+Str,+Boston,+ma&mrcr=0&sll=42.018182,-71.277237&sspn=0.329033,0.641327&ie=UTF8&ll=42.167475,-71.207199&spn=0.32826,0.641327&z=11&om=1] Due to its avoidance of built-up areas, the southern half of this road was little-used. In addition, another well-used route passed west of this turnpike along current [[Massachusetts Route 1A|Route 1A]].

;[[South Attleboro, Massachusetts|South Attleboro]]
The Post Road entered Massachusetts at the town of [[Attleboro, Massachusetts|Attleboro]]'s Newport Avenue ([[Massachusetts Route 1A|Route 1A]]) through the settlement of South Attleboro. It continued northeast on Newport Avenue along [[Massachusetts Route 123|Route 123]], splitting to the north (staying with Newport Avenue) to cross into North Attleborough.

;[[North Attleborough, Massachusetts|North Attleborough]]
South of North Attleborough center, the old road is known as Old Post Road. The old road crossed the turnpike (now US 1) just south of the intersection with [[Massachusetts Route 120|Route 120]], forming a small curve before merging with the turnpike north of the intersection. This curved alignment is now gone, so traffic must use US 1. Additionally, US 1 leaves the turnpike at the [[Massachusetts Route 120|Route 120]] intersection to bypass North Attleborough center on [[East Washington Street (North Attleborough)|East Washington Street]].

The Lower Post Road passed through North Attleborough Center on [[Washington Street (North Attleborough)|Washington Street]], later used as part of the turnpike. Another short curved alignment still exists to the west of Washington Street north of the center, now called "Park Street". Just north of this, the route crosses the [[Ten Mile River (Seekonk River)|Ten Mile River]] and then enters a complicated five-way intersection with US 1 and [[Massachusetts Route 1A|Route 1A]]. US 1 straight ahead is the old turnpike, and US 1 to the right was built in the 1930s. The Post Road went to the right onto Elmwood Street. The fork to the left onto Route 1A through [[Plainville, Massachusetts|Plainville]] center was an alternate route to Boston.

Elmwood Street enters the town of [[Plainville, Massachusetts|Plainville]], where it becomes Messenger Street. The road merges with [[Massachusetts Route 106|Route 106]] before crossing [[Massachusetts Route 152|Route 152]] at [[Wilkins Four Corners, Massachusetts|Wilkins Four Corners]] and entering [[Foxborough, Massachusetts|Foxborough]].

;[[Sharon, Massachusetts|Sharon]]
There is a road passing from the town of [[Sharon, Massachusetts|Sharon]] into [[Walpole, Massachusetts|East Walpole]] which is known as Old Post Road, which continues north as Pleasant Street into [[Norwood, Massachusetts|Norwood]]. [https://maps.google.com/maps?f=d&hl=en&saddr=Washington+Str,+North+Attleboro,+MA&daddr=Washington+St++South+Walpole,+MA+to%3AWashington+St+Norwood,+MA+to%3AWashington+St+Dedham,+MA+to%3AWashington+Str,+Boston,+ma&mrcr=3&sll=42.134386,-71.244278&sspn=0.328431,0.641327&ie=UTF8&om=1&ll=42.169511,-71.205826&spn=0.328249,0.641327&z=11]

;[[East Walpole, Massachusetts|East Walpole]] (part of [[Walpole, Massachusetts|Walpole]])

;[[Norwood, Massachusetts|Norwood]]
In Norwood, the oldest route of the Post Road followed Neponset Street south until the intersection with Pleasant Street. The newer route followed Washington Street through the center of Norwood, south towards Walpole.

;[[Islington, Massachusetts|Islington]] (part of [[Westwood, Massachusetts|Westwood]])
The Post Road turned from East Street onto Washington Street, heading south towards Norwood.

;[[Dedham, Massachusetts|Dedham]]
In Dedham, the road followed modern-day Lower East Street north to Boston. Here the Post Road splits, with the oldest route (prior to 1704) following East Street in an arc around the old marshes until it meets Washington Street ([[Massachusetts Route 1A|Route 1A]]) south of the Dedham village center.

The new road (in use by 1744) followed High Street to Court Street, and continued south along Highland Street and Elm Street, rejoining East Street south of [[Interstate 95]].

;[[Roxbury, Massachusetts|Roxbury]]
In Roxbury, the road turned down Roxbury Street and followed modern-day Centre Street around the edge of Fort Hill, crossing Stony Brook at a bridge in the location of the modern-day Jackson Square MBTA station. The road continued following Centre Street southwards through modern-day Hyde Square and Jamaica Plain, and southwards to Dedham.

;[[Boston]]
In the colonial city, the road began at the [[Old State House (Boston)|Old State House]], the government center of the 18th-century city. Once called Cornhill, Orange, and Newbury Street, it's now modern-day [[Washington Street, Boston|Washington Street]], running southwards off the [[Boston Neck]] towards the village of Roxbury.