U.S. Route 1A
U.S. Route 1A is the name of several highways found in the United States.
North Carolina
Wake Forest–Youngsville
U.S. Highway 1A is a alternate route of US 1 through the towns of Wake Forest and Youngsville. While serving the downtown areas of both towns, the highway bypasses the primary commercial district of each. US 1A runs concurrently with North Carolina Highway 98 Business along South Avenue in Wake Forest and NC 96 in Youngsville. US 1A was established in 1953 when US 1 was rerouted to bypass west of Wake Forest and Youngsville. The former alignment of US 1 became US 1A.Franklinton
U.S. Highway 1A was established in 1953 when US 1 was rerouted to bypass west Franklinton. A two-lane urban highway, it follows the old alignment through the downtown area, via Main Street. In November 2023, the American Association of State Highway and Transportation Officials approved a North Carolina Department of Transportation request to decommission the route.Connecticut
U.S. Route 1A in Connecticut is a short loop route within the town of Stonington that passes through Stonington. US 1 originally went along this route until 1941. US 1A is the only surviving alternate U.S. Route in Connecticut.The route is long and takes the following route: from US 1 to North Water Street, to Trumbull Avenue, to Alpha Avenue, then to Elm Street, and back to US 1.
;Major intersections
Rhode Island
U.S. Route 1A is a numbered U.S. Route running in the U.S. state of Rhode Island. It serves as a bypass of the downtown areas of Providence and Pawtucket, which US 1 goes through. US 1A is a lengthier route than the section of US 1 that it bypasses.US 1A should not be confused with Route 1A. In Rhode Island, US 1A exists in two segments in Providence County connected by a mostly-unsigned concurrency with I-195, while Route 1A serves as a scenic alternate route of US 1 in Washington County. Not helping matters is the presence of Route 1A shields on US 1A.
;Route description
US 1A runs for through Warwick along Post Road and Warwick Avenue. Then, in Cranston, it runs for another continuing along Warwick Avenue to Norwood Avenue and Narragansett Boulevard before crossing into Providence. There, the highway continues to follow Narragansett Boulevard and turns along Allens Avenue, Eddy Street, and Point Street. US 1A is not signed at all in Providence, but, in all likelihood, from Point Street, US 1A uses Water Street to enter I-195 eastbound at exit 1D. Similarly, US 1A southbound probably exits I-195 westbound at exit 1C onto South Main Street and turns left onto Point Street. The highway continues on the East Providence Expressway into East Providence. US 1A uses another one-way pairing with the eastbound traffic using the expressway and Warren and Pawtucket avenues. The opposite direction is routed along Pawtucket and Newport avenues. The last city through which US 1A runs is Pawtucket where it runs for to the Massachusetts state line in Attleboro, traveling concurrently with Route 1A on Newport Avenue to US 1.
;History
US 1A is not a former alignment of US 1. In Warwick, US 1A formerly ran further north along Post Road east of Route 117 instead of turning north to overlap with the state road. It stayed with Post Road through Pawtuxet Village, then traveled north into Cranston on Broad Street to rejoin the current alignment at Norwood Avenue.
The southernmost section of the route, which exists on Post Road, was part of the Boston Post Road, a former mail route.
In 2022, one page on the Rhode Island Department of Transportation website, dedicated to pavement resurfacing projects from 2022 to 2027, referred to part of US 1A as RI 1A; it is unclear if US 1A has since been re-designated as a northern extension/section of RI 1A. . Since around this time, almost all signage along US 1A refers to the route as RI 1A. Despite this, two posts on Twitter refer to US 1A in Providence.
;Major intersections
Exit numbers concurrent with I-195 converted to mileage-based exit numbering in 2020.
Maine
York
U.S. Route 1A in York travels along the coast and serves the areas of York Harbor, York Beach, and Cape Neddick. The length of this segment is.Portland
U.S. Route 1A 's original routing in Portland, Maine's largest city, has largely been eliminated, but a short section still exists mainly along Portland's waterfront. It now begins at exit 7 on the I-295 freeway. It travels southeast along the Franklin Street Arterial until its intersection with Commercial Street and the Maine State Pier in the Old Port. At this point, it makes a 90-degree turn onto Commercial Street, which it will follow through the entire waterfront area, passing such landmarks as Becky's Diner and the U.S. Customs Service Portland office. It then passes under the four-lane State Route 77 /Casco Bay Bridge roadway and then continues along Commercial Street until its intersection with Valley Street and the Veteran's Memorial Bridge. US 1A follows neither routing but instead turns west and north following the Fore River Parkway, on which it loops back to meet I-295 again at the exit 5 interchange, which also serves Congress Street.Rockland
U.S. Route 1A in Rockland bypasses the downtown area and begins at the intersection of Camden and Maverick streets. Traveling westbound along Maverick Street, it passes Rockland Plaza and is concurrent with SR 17 along this section. It then takes a 90-degree turn at a flashing yellow blinker light to turn left onto Birch Street where it meets North Main Street at a traffic light. US 1A then continues along Broadway, passing Oceanside High School as it continues south through the residential heart of Rockland, and encounters additional traffic lights at Rankin and Limerock streets, until its end at a traffic light at Park Street where it rejoins US 1.Bangor
U.S. Route 1A in Bangor is a loop route off US 1, serving the Bangor metropolitan area. The route is long and runs from Stockton Springs to Ellsworth. US 1A enters Bangor from the southwest by following the west bank of the Penobscot River through the towns of Winterport and Hampden. US 1A crosses the Joshua Chamberlain Bridge from downtown Bangor into the city of Brewer and continues southeast through Holden and Dedham to Ellsworth. This route follows the former alignment of US 1, prior to US 1's relocation after construction of the Waldo–Hancock Bridge. US 1A signage on this portion lacks directional indicators.Milbridge
U.S. Route 1A in Milbridge provides a more direct route for through travelers, as it branches off from US 1 just north of the main business section of the small town of Milbridge, and is known as Bridge Street. It then crosses the Narraguagus River and continues in a northeasterly direction whereas US 1 takes a route that is north-northwest to meet Cherryfield before turning back east while US 1A takes the more direct route closer to the coast to rejoin its parent just east of Harrington. The length of this segment is.Whitneyville
U.S. Route 1A runs between Jonesboro and Machias via the village of Whitneyville.Aroostook County
U.S. Route 1A in Aroostook County runs, from Mars Hill to Van Buren. US 1A runs parallel to the Canadian border, as US 1 goes through the cities of Presque Isle and Caribou. Major towns along US 1A include Fort Fairfield and Limestone.The section north of Fort Fairfield to Van Buren was once SR 165 but is no longer a numbered highway in Maine.
Former routes
Southern Pines, North Carolina
U.S. Highway 1A was established around 1957, replacing the old mainline US 1 through Southern Pines, North Carolina, via May Street. It was decommissioned by 1962.Sanford, North Carolina
U.S. Highway 1A was established around 1957, replacing the old mainline US 1 through downtown Sanford, North Carolina, via Carthage Street and Hawkins Avenue. It was renumbered in 1960 as US 1 Bus.Cary–Raleigh, North Carolina
U.S. Highway 1A may have appeared in 1933 as a second route between Cary and Raleigh, North Carolina; it was cosigned with US 70 on Western Boulevard. Maps cease showing the route by 1936.Raleigh, North Carolina 1
The first U.S. Highway 1A in Raleigh, North Carolina, was established in 1946 as new routing along Louisburg Road, then along new road back to Wake Forest Road. In 1948, US 1 and US 1A switched routes.Raleigh, North Carolina 2
The second U.S. Highway 1A in Raleigh, North Carolina, was established in 1948 as a route switch with mainline US 1 onto Wake Forest Boulevard. It was decommissioned by 1957.Henderson, North Carolina
U.S. Highway 1A was established around 1957, replacing the old mainline US 1 through Gill and downtown Henderson, North Carolina, via Raleigh Road and Garnett Street. It was renumbered in 1960 as US 1 Bus.Port Chester, New York
U.S. Route 1A in Port Chester, New York, was routed along King Street, Willet Avenue, Putnam Avenue, and Hillside Avenue.Stamford, Connecticut
U.S. Route 1A was an alternate route in Stamford, Connecticut. Prior to the redevelopment of Downtown Stamford in the 1960s, US 1 originally followed West Main Street across the Mill River bridge onto Main Street and along East Main Street. After the redevelopment, the Main Street portion of US 1 was routed onto the newly created Tresser Boulevard and its accompanying bridge crossing the river.As of 1938, US 1A in Stamford was signed from West Main Street along Richmond Hill Avenue across the river, South Street, State Street north along the railroad tracks, Elm Street under the railroad tracks, and Magee Avenue to East Main Street.