Rhode Island Route 1B

Route 1A
Map (excludes overlaps with US 1)
Route information
Maintained by RIDOT
Length:	38.3 mi (61.6 km)
Major junctions
South end:	US 1 in Westerly
	Route 108 in South Kingstown Route 138 in North Kingstown Route 102 in North Kingstown
North end:	US 1 in North Kingstown
Location
Counties:	Washington
Highway system
Rhode Island Routes ← US 1A Route 1C →

Rhode Island Routes

Route 1A is a 39.6-mile (63.7 km) long numbered state highway located in Washington County, Rhode Island, United States. The route, which parallels U.S. Route 1 for its entire length, has five distinct sections, each separated by short overlaps with US 1. It travels through five towns in Washington County: Westerly, Charlestown, South Kingstown, Narragansett, and North Kingstown.

Route 1A follows U.S. Route 1 (US 1) closely through Washington County, locally known as "South County." US 1 is a divided highway for most of its length in this region; there is also a short freeway section in South Kingstown and Narragansett. Because Interstate 95 largely bypasses the main population centers in the southern portion of the state, instead following a more inland routing, US 1 serves as the main thoroughfare. Route 1A, in comparison, runs on surface streets, acting as an alternate route for US 1 that provides access to more local roads and business districts. There are five distinct sections, each separated by short concurrencies with US 1; as an alternate route, Route 1A is unsigned on each concurrency.