Massachusetts Route 21
|Length:||13.73 mi (22.10 km)|
|South end:||US 20 in Springfield|
|US 202 / Route 181 in Belchertown|
|North end:||Route 9 in Belchertown|
The route begins at U.S. Route 20 in the Indian Orchard section of Springfield. It heads north, intersecting with Route 141 before crossing the Chicopee River into Ludlow. Once in Ludlow, the road continues in a northeasterly direction. It passes under the Massachusetts Turnpike, with access to that road via Exit 7. It continues through town, passing south of the Springfield Reservoir before heading northward into Belchertown. In Belchertown it shares a concurrency with U.S. Route 202, which ends at Route 181. From there Route 21 makes its final short trek to its current terminus at Route 9.
Prior to the completion of the Quabbin Reservoir, Route 21 extended further northward. It passed through the former town of Enfield, then northward along the Swift River into Greenwich and the northern end of Dana before heading through the current town of Petersham and into Athol, where it terminated at what is now Route 2A. The southern portion of the road (Old Enfield Road) is still accessible in Belchertown. The northern trunk follows Pleasant Street and New Sherborn Road in Athol, then the Monson Turnpike (Turnpike Road) in Petersham, where the road had an intersection with Route 122. Much of the route south of this intersection lies within the Quabbin Reservoir State Reservation.
|Hampden||Springfield||0.0||0.0|| US 20 – Palmer, Boston, West Springfield, Westfield
|Southern terminus of Route 21 and Route 141; southern end of Route 141 concurrency|
|1.2||1.9||Route 141 – Chicopee Falls, Holyoke||Northern end of Route 141 concurrency|
|Ludlow||2.3||3.7||I‑90 (Mass Pike) – Springfield, Boston||Exit 7 on the Mass Pike|
|Hampshire||Belchertown||12.0||19.3||US 202 south – Granby||Southern end of US 202 concurrency|
|13.0||20.9|| US 202 north – Pelham
Route 181 – Bondsville, Palmer
|Northern end of US 202 concurrency; northern terminus of Route 181|
|13.73||22.10||Route 9 – Amherst, Northampton, Ware, Worcester||Northern terminus of Route 21|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
|Wikimedia Commons has media related to Massachusetts Route 21.|
- Executive Office of Transportation, Office of Transportation Planning - 2007 Road Inventory
- Tougias, Michael. Quabbin: A History and Explorers Guide. Yarmouth Port, Massachusetts: On Cape Publications, 2002, p.48.