Rhode Island Route 1A

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Rhode Island Route 1A marker

Route 1A
Map (excludes overlaps with US 1)
Route information
Maintained by RIDOT
Length38.3 mi[1] (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
Highway system
Rhode Island Routes
US 1ARoute 1C

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 description[edit]

Westerly to South Kingstown[edit]

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 unsignaged on each concurrency.

SCENIC 1A signs; the 'R.I. SCENIC 1A' is unique to this sign

The first section of Route 1A is 8.8 miles (14.2 km) in length and runs entirely in Westerly. Beginning in downtown Westerly, the roadway takes a more southerly routing in the town than its parent route and serves the affluent coastal community of Watch Hill and Misquamicut State Beach. In Westerly, Route 1A north actually follows a due south route for its first 3.7 miles (6.0 km). The roadway begins as Main Street, which merges with US 1 (Broad Street) just after the latter route crosses the Pawcatuck River from Stonington, Connecticut into downtown Westerly. Route 1A north continues southward on Beach Street before turning south onto Watch Hill Road. The roadway then turns to the southeast along Shore Road, which runs parallel to Misquamicut Beach, Atlantic Beach and Winnapaug Pond, until Shore Road meets Post Road not far from the Charlestown town line. Many maps incorrectly post the entire length of Watch Hill Road west of Shore Road as Route 1A.

After Shore Road merges with Post Road, Route 1A has an 4.1-mile (6.6 km) unsignaged concurrency with US 1 in Westerly and Charlestown. Just after Post Road, carrying both US 1 and unsignaged Route 1A, passes into Charlestown, the road intersects with Route 216 (Ross Hill Road). Route 216 ends at this intersection. The second signaged section of Route 1A, which is 1.4 miles (2 km) in length, begins shortly after Post Road passes Ninigret Pond. The roadway follows Old Post Road in Charlestown past Ninigret State Park before briefly merging back with US 1 (Post Road).

The second US 1/Route 1A concurrency is only 0.1 miles (0.16 km) long. The third signaged section of Route 1A, which is 3.1 miles (5.0 km) in length, again follows Old Post Road through Charlestown and into South Kingstown before re-merging with US 1. It serves as a beach bypass, granting access to the roads to Charlestown Breachway State Beach, Charlestown Town Beach and Green Hill Beach.

The third US 1/Route 1A concurrency is 0.8 miles (1.3 km) in length, including the distance of a median turnaround required to reverse direction on US 1; Route 1A north automatically merges onto US 1 north, but to continue to follow Route 1A north, drivers must make a U-turn onto US 1 south. The fourth section of Route 1A (2.1 miles (3.4 km) in length) follows Post Road, which exits from US 1 south and follows a more northerly routing than that of its parent highway. The route, while bypassing the busier US 1, is little more than a residential road. Just before merging with US 1, Route 1A intersects Route 110 (Ministerial Road). Route 110 ends just 0.25 miles (0.40 km) south of this intersection at a merge with US 1. At the end of Route 1A's fourth segment, the roadway merges onto US 1 south; in order to access US 1 north (and unsignaged Route 1A north), drivers must utilize another median turnaround.

Wakefield to Wickford[edit]

RI 1A Scenic northbound proceeding away from RI 108 in Naragansett

After the fourth section, Route 1A is concurrent with US 1 for 2.0 miles (3.2 km) through South Kingstown. Just after the highway passes by the access road to Jerusalem, a small fishing village, Route 1A unofficially leaves US 1 and re-emerges as Post Road, beginning its fifth signaged segment. This fifth segment runs for 17.2 miles (27.7 km) and serves as a major commercial corridor for the towns of South Kinsgtown, Narragansett, and North Kingstown. After splitting from US 1, Route 1A runs for 1.2 miles (1.9 km) before intersecting with its parent highway again; drivers must merge onto US 1 northbound and quickly make a median U-turn to continue to follow Route 1A, as there is no grade-separated interchange at this junction. Route 1A then runs north and east along Post Road and Main Street into the village of Wakefield, a major commercial center of South Kingstown. Just after exiting downtown Wakefield, the road intersects with Route 108, beginning a 0.7-mile (1.1 km) wrong-way concurrency: Route 1A north and Route 108 south run in a southeasterly direction along Kingstown Road. After entering the town of Narragansett, the concurrent routes partially intersect US 1 at a grade-separated interchange. Just south of the US 1 overpass, Route 108 south and Route 1A north both enter the Dillon (Narragansett) Rotary. Route 108 exits to the south, heading towards the villages of Galilee and Point Judith, while Route 1A exits to the east, heading towards the village of Narragansett Pier.

The 4.4-mile (7.1 km) portion of Route 1A in Wakefield between US 1 and the Dillon Rotary is not actually signaged as part of Route 1A on most maps;[2] however, the Rhode Island Department of Transportation (RIDOT) has posted reassurance markers on Post Road, Main Street and Kingstown Road though Wakefield, and the register of state highways indicates that this routing is officially part of Route 1A.[3]

In Narragansett, Route 1A follows Kingstown Road and Narragansett Avenue. When the highway reaches the village of Narragansett Pier, it turns due north onto Beach Street and passes Narragansett Town Beach just north of The Towers. The mainline of Beach Street becomes Boston Neck Road just north of the village center and crosses the Pettaquamscutt River (also known as Narrow River) via the Sprague Bridge. Route 1A serves as a major commercial corridor in northern Narragansett, and also provides access to the village of Bonnet Shores. It then crosses into the Saunderstown neighborhood of North Kingstown, interchanging with Rhode Island Route 138 just west of the Jamestown-Verrazano Bridge. Route 1A heads north for another 3.3 miles (5.3 km) before crossing a branch of Wickford Cove via the Hussey Bridge, entering the village of Wickford. Route 1A turns north onto Brown Street, intersecting with the southern terminus of Route 102. The roadway then turns to the west onto West Main Street before terminating at US 1 just northwest of the main Wickford business district.


At various points in time, every segment of Route 1A except the one in Westerly served as part of U.S. 1 (historically the Lower Boston Post Road). The Route 1A designation came after the U.S. 1 designation was moved to a different alignment.

Before that, Route 1A existed on an alignment that is now roughly Route 3.

The 19.0-mile (30.6 km) piece from old U.S. 1 in downtown Wakefield to current US 1 near Wickford, now most of section 5 above, was once Route 1B. It was renumbered to Route 1A by 1934.


Many of the signs on Route 1A replace the 'R.I.' in the shield with the word 'SCENIC', and use green for the 'SCENIC' and often the '1A'.

Route 1A should not be confused with US 1A. In Rhode Island, Route 1A exists in segments between Westerly and North Kingstown. The segment north of North Kingstown, which begins in Warwick, is designated as US 1A. Not helping matters is the presence of incorrect signs on both routes, marking Route 1A as US 1A and US 1A as Route 1A.

In southern Rhode Island, much of U.S. 1 consists of a divided highway with no direct access across; cross traffic must turn right and use a U-turn ramp in the median. Several of the sections of Route 1A end at US 1 in this manner; the northernmost one crosses US 1 like this. Both of these cases can be considered short concurrencies.

Major intersections[edit]

The entire route is in Washington County.

Westerly0.00.0 US 1 (Broad Street) to I-95 / Route 3Southern terminus of Route 1A
8.814.2 US 1 south (Post Road)South end of US 1 concurrency
Charlestown10.216.4 Route 216 north (Ross Hill Road)Southern terminus of Route 216
12.920.8 US 1 north (Post Road)North end of US 1 concurrency; access from US 1 north only
14.323.0 US 1 south (Post Road)South end of US 1 concurrency; access to US 1 north only
14.423.2 US 1 north (Post Road)North end of US 1 concurrency; access from US 1 north only
South Kingstown17.628.3 US 1 north (Commodore Perry Highway)South end of US 1 concurrency; access to US 1 north only
18.329.5 US 1 south (Commodore Perry Highway)North end of US 1 concurrency; access from US 1 south only
20.132.3 Route 110 (Ministerial Road)
20.432.8 US 1 south (Commodore Perry Highway)South end of US 1 concurrency; access to US 1 south only
22.536.2 US 1 north (Commodore Perry Highway)North end of US 1 concurrency; access from US 1 north only
23.738.1 US 1 (Commodore Perry Highway)Route 1A uses median turnaround to continue across US 1
26.242.2 Route 108 north (Kingstown Road)South end of Route 108 concurrency
Narragansett26.743.0 US 1 – Providence, WesterlyInterchange; no direct access from US 1 north to Route 1A
26.843.1 Route 108 southDillon Rotary; north end of Route 108 concurrency
28.646.0Sprague Bridge over the Pettaquamscutt River
32.852.8Bridgetown RoadFormer routing of Route 138
North Kingstown35.557.1 Route 138 – Jamestown, Newport, ProvidenceInterchange; to Jamestown-Verrazano Bridge
38.862.4Hussey Bridge over Wickford Cove
38.962.6 Route 102 north (Phillips Street)Southern terminus of Route 102
39.663.7 US 1 (Post Road)Northern terminus of Route 1A
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


Route map:

KML is from Wikidata
  1. ^ a b Google (2012-07-28). "Google Maps - Overview map of Rhode Island Route 1A" (Map). Google Maps. Google. Retrieved 2012-07-28.
  2. ^ Rhode Island Street Atlas (5th ed.). American Map. 2006.
  3. ^ "Map of State Highways in South Kingstown" (PDF). Rhode Island Department of Transportation. Retrieved 2012-07-28.