Editing U.S. Route 1 (section)

==Route description==
{{lengths table}}
|-
|[[U.S. Route 1 in Florida|FL]]
|{{convert|545|mi|km|disp=table}}
|-
|[[U.S. Route 1 in Georgia|GA]]
|{{convert|223|mi|km|disp=table}}
|-
|[[U.S. Route 1 in South Carolina|SC]]
|{{convert|171|mi|km|disp=table}}
|-
|[[U.S. Route 1 in North Carolina|NC]]
|{{convert|174|mi|km|disp=table}}
|-
|[[U.S. Route 1 in Virginia|VA]]
|{{convert|197|mi|km|disp=table}}
|-
|[[U.S. Route 1 in the District of Columbia|DC]]
|{{convert|7|mi|km|disp=table}}
|-
|[[U.S. Route 1 in Maryland|MD]]
|{{convert|81|mi|km|disp=table}}
|-
|[[U.S. Route 1 in Pennsylvania|PA]]
|{{convert|81|mi|km|disp=table}}
|-
|[[U.S. Route 1 in New Jersey|NJ]]
|{{convert|66|mi|km|disp=table}}
|-
|[[U.S. Route 1 in New York|NY]]
|{{convert|22|mi|km|disp=table}}
|-
|[[U.S. Route 1 in Connecticut|CT]]
|{{convert|117|mi|km|disp=table}}
|-
|[[U.S. Route 1 in Rhode Island|RI]]
|{{convert|57|mi|km|disp=table}}
|-
|[[U.S. Route 1 in Massachusetts|MA]]
|{{convert|86|mi|km|disp=table}}
|-
|[[U.S. Route 1 in New Hampshire|NH]]
|{{convert|17|mi|km|disp=table}}
|-
|[[U.S. Route 1 in Maine|ME]]
|{{convert|526|mi|km|disp=table}}
|-
|Total
|{{convert|2369|mi|km|disp=table}}
|}
[[File:US 1 (FL).svg|thumb|70x70px|A US 1 shield used in Florida prior to 1993]]
{{multiple image
| align             = right
| direction         = vertical
| width             = 220
| image1            = Southernmost point of U.S. Highway 1.jpg
| caption1          = Mile 0, Key West, Florida
| image2            = Moser Channel top.jpg
| caption2          = US&nbsp;1 crossing [[Moser Channel]] along the Overseas Highway, Florida Keys
| image3            = Southern Biscayne Boulevard.jpg
| caption3          = US&nbsp;1 along [[Biscayne Boulevard]] in downtown Miami, Florida
| image4            = Augsky2.JPG
| caption4          = Skyline of Augusta, Georgia, as seen from US&nbsp;1 in North Augusta near I-520
| image5            = Beltline1.JPG
| caption5          = [[Interstate 40|I-40]] east approaching the Raleigh Beltline, which includes US&nbsp;1
| image6            = 14thStreetbridgeWashingtonDC.jpg
| caption6          = US&nbsp;1 going over the left-most of the [[14th Street bridges]], Washington DC
| image7            = 2016-06-11 10 03 44 View south along U.S. Route 1 (Conowingo Road) in Conowingo, Cecil County, Maryland, approaching the Conowingo Dam on the Susquehanna River.jpg
| caption7          = US&nbsp;1 crossing the [[Susquehanna River]] on the [[Conowingo Dam]] in Cecil County, Maryland
| image8            = US 1 NB past PA 532.jpeg
| caption8          = US&nbsp;1 along [[Roosevelt Boulevard (Philadelphia)|Roosevelt Boulevard]] in Philadelphia, Pennsylvania
| image9            = Pulaski Skyway full view.jpg
| caption9          = [[Pulaski Skyway]], in Jersey City, Kearny, and Newark, New Jersey
| image10           = Boston skyline from Malone Park, Chelsea, February 2014.jpg
| caption10         = [[Tobin Bridge]] with the Boston skyline, as seen from [[Chelsea, Massachusetts]]
| image11           = Memorial Bridge (Portsmouth, New Hampshire) April 2016.JPG
| caption11         = [[Memorial Bridge (Portsmouth, New Hampshire)|Memorial Bridge]] between New Hampshire and Maine, 2016
| image12           = Start US Highway 1.jpg
| caption12         = Monument in Fort Kent dedicated to US&nbsp;1, Fort Kent, Maine
}}

===Florida===
{{main|U.S. Route 1 in Florida|Overseas Highway}}
US&nbsp;1 travels along the east coast of [[Florida]], beginning at 490 Whitehead Street in [[Key West]]<ref>{{google maps |url = https://maps.google.com/maps?f=q&hl=en&geocode=&q=490+Whitehead+St,+Key+West,+FL+33040&sll=24.564454,-81.803019&sspn=0.009114,0.013819&layer=c&ie=UTF8&ll=24.559927,-81.803319&spn=0.009114,0.013819&z=16&cbll=24.555358,-81.804056&panoid=FI83lxPQwLIYR-9LZ7Y8rQ&cbp=1,20.256207176035787,,0,5 |title = 490 Whitehead St, Key West, FL 33040 |access-date=August 9, 2012}}</ref> and passing through [[Miami]], [[Hollywood, Florida|Hollywood]], [[Fort Lauderdale, Florida|Fort Lauderdale]], [[Boca Raton, Florida|Boca Raton]], [[West Palm Beach, Florida|West Palm Beach]], [[Jupiter, Florida|Jupiter]], [[Fort Pierce, Florida|Fort Pierce]], [[Melbourne, Florida|Melbourne]], [[Cocoa, Florida|Cocoa]], [[Titusville, Florida|Titusville]], [[Daytona Beach, Florida|Daytona Beach]], [[Palm Coast, Florida|Palm Coast]], [[St. Augustine, Florida|St. Augustine]], and [[Jacksonville, Florida|Jacksonville]]. The southernmost piece through the chain islands of the [[Florida Keys]], about {{convert|100|mi|km}} long, is the two-lane [[Overseas Highway]], originally built in the late 1930s after railroad tycoon [[Henry Flagler]]'s [[Florida East Coast Railway]]'s [[Overseas Railroad]], which was built between 1905 and 1912 on stone pillars, was ruined by the [[1935 Labor Day hurricane]]. The rest of US&nbsp;1 in Florida is generally a four-lane [[divided highway]], despite the existence of the newer [[Interstate 95|I-95]] not far away. Famous vacation scenic route [[Florida State Road A1A|State Road&nbsp;A1A]] is a continuous oceanfront alternate to US&nbsp;1 that runs along the beaches of the [[Atlantic Ocean]], cut only by assorted unbridged inlets and the [[Kennedy Space Center]] at [[Cape Canaveral]]. North of Jacksonville, US&nbsp;1 turns northwest toward [[Augusta, Georgia]]; [[U.S. Route 17|US&nbsp;17]] becomes the coastal route into [[Virginia]], where [[U.S. Route 13|US&nbsp;13]] takes over.<ref name=maps>[[Google Maps]] street maps and [[USGS]] [[topographic map]]s, accessed via [http://mapper.acme.com/ ACME Mapper] {{Webarchive|url=https://web.archive.org/web/20221119110322/http://mapper.acme.com/ |date=November 19, 2022 }}{{full citation needed|date=January 2017}}</ref> In Florida until the 1990s, US&nbsp;1 used high-contrast markers (white text on a red background).<ref>{{cite news |first = John |last =  Gordon |work = [[The Virginian-Pilot]] |title = US Highway 17 to Florida: Scenic, Historic and Very Slow, December 29, 1993 |quote = Drivers know they're in Florida when they notice the U.S. Highway signs are color-coded for easy recognition. The US&nbsp;17 signs, for example, are yellow, while those of US&nbsp;1 are red, US&nbsp;90 blue. and US&nbsp;27 green }}{{full citation needed|date= January 2017}}</ref>

===Georgia===
{{main|U.S. Route 1 in Georgia}}
The part of US&nbsp;1 in [[Georgia (U.S. state)|Georgia]], as it shifts from the coastal alignment in Florida to the Atlantic Seaboard Fall Line alignment in South Carolina, is generally very rural, passing through marshes and former [[Plantation complexes in the Southern United States|plantations]] between the towns and cities of [[Folkston, Georgia|Folkston]], [[Waycross, Georgia|Waycross]], [[Alma, Georgia|Alma]], [[Baxley, Georgia|Baxley]], [[Lyons, Georgia|Lyons]], [[Swainsboro, Georgia|Swainsboro]], and [[Augusta, Georgia|Augusta]]. The [[Georgia Department of Transportation]] has an ongoing plan to widen all of US&nbsp;1 to four lanes with bypasses, which is more than 50&nbsp;percent complete.

===The Carolinas===
{{main|U.S. Route 1 in South Carolina|U.S. Route 1 in North Carolina}}
In [[South Carolina]], US&nbsp;1 generally serves mostly rural areas as it falls west of [[Interstate 95|I-95]] while the coastal areas are served by routes east of it. Starting in South Carolina, US&nbsp;1 is paralleled by [[Interstate 20|I-20]] along the [[Atlantic Seaboard Fall Line]] through [[Aiken, South Carolina|Aiken]], [[Lexington, South Carolina|Lexington]], and [[Columbia, South Carolina|Columbia]] to [[Camden, South Carolina|Camden]] and [[Lugoff, South Carolina|Lugoff]]. US&nbsp;1 functions as a local two-lane road with occasional boulevard stretches. After Camden, US&nbsp;1 continues northeast away from any Interstate toward [[Bethune, South Carolina|Bethune]], [[Patrick, South Carolina|Patrick]], [[McBee, South Carolina|McBee]], and [[Cheraw, South Carolina|Cheraw]] with no bypasses or four-lane sections except around Cheraw through the [[U.S. Route 52|US&nbsp;52]] and [[South Carolina Highway 9]] (SC&nbsp;9) concurrencies. After SC&nbsp;9, it continues northward into North Carolina as a two -lane highway. The [[South Carolina Department of Transportation]] (SCDOT) has no plans to widen or bypass any US&nbsp;1 alignments northeast of Camden to the North Carolina line.

Between the South Carolina line and the [[U.S. Route 74|US&nbsp;74]] bypass, US&nbsp;1 is a two-lane road but sees a considerable amount of truck and tourist traffic of people cutting through from the US&nbsp;74/[[U.S. Route 220|US&nbsp;220]] and [[Interstate 73|I-73]]/[[Interstate 74|I-74]] corridor attempting to reach points south and east. US&nbsp;1 goes through downtown [[Rockingham, North Carolina|Rockingham]], with a bypass in the future plans. North of the [[North Carolina Highway 177]] (NC&nbsp;177) junction, it becomes four lanes or greater, becoming a [[superstreet]] with limited access and then becoming a limited access freeway. US&nbsp;1 becomes a major artery for the state as it moves north of Rockingham. After [[Richmond County, North Carolina|Richmond County]], it goes into [[Moore County, North Carolina|Moore County]] with two expressway bypasses in [[Southern Pines, North Carolina|Southern Pines]], [[Vass, North Carolina|Vass]], and [[Cameron, North Carolina|Cameron]]. US&nbsp;1 continues with the [[Jefferson Davis Highway]] label through [[Lee County, North Carolina|Lee County]] and [[Sanford, North Carolina|Sanford]], and on to [[Cary, North Carolina|Cary]] and [[Raleigh, North Carolina|Raleigh]]. US&nbsp;1 runs concurrently with [[U.S. Route 64|US&nbsp;64]] through most of Cary, where the freeway recently underwent a major renovation and improvements that added lanes in both directions.<ref>{{cite web |title=US 1/64 Widening |url = http://www.townofcary.org/Departments/Engineering/Engineering_Projects/US_1_64_Widening.htm |publisher=Town of Cary, North Carolina |archive-url = https://web.archive.org/web/20120314183019/http://www.townofcary.org/Departments/Engineering/Engineering_Projects/US_1_64_Widening.htm |archive-date = March 14, 2012 }}{{full citation needed|date=January 2017}}</ref> North of Raleigh, US&nbsp;1 (known as Capital Boulevard in northern Wake County) crosses [[Interstate 540 (North Carolina)|I-540]] and then again becomes a four-lane divided arterial to [[Interstate 85|I-85]] near [[Henderson, North Carolina|Henderson]]. The [[North Carolina Department of Transportation]] (NCDOT) has begun a corridor study for this section of US&nbsp;1.<ref>{{cite web |url = http://www.ncdot.org/projects/US1corridor/ |title = US&nbsp;1 Corridor Study |publisher = North Carolina Department of Transportation |access-date = August 9, 2012 |archive-date = March 24, 2012 |archive-url = https://web.archive.org/web/20120324052923/http://www.ncdot.org/projects/US1corridor/ |url-status = dead }}</ref> Moreover, NCDOT is planning to finish four-laning US&nbsp;1 in Richmond County past NC&nbsp;177 with a Rockingham bypass to the east. There are no plans from SCDOT to widen US&nbsp;1 from the state line. From Henderson into Virginia, US&nbsp;1 runs parallel with I-85 as a two-lane local road until the state line, where Virginia hosts a continuous third center lane for alternate passing toward [[U.S. Route 58|US&nbsp;58]] before [[South Hill, Virginia|South Hill]].

===Mid-Atlantic===
{{main|U.S. Route 1 in Virginia|U.S. Route 1 in the District of Columbia|U.S. Route 1 in Maryland|U.S. Route 1 in Pennsylvania|U.S. Route 1 in New Jersey|U.S. Route 1 in New York}}

In the [[Mid-Atlantic (United States)|Mid-Atlantic]], US&nbsp;1 generally serves some of the [[Northeast megalopolis|most populated areas of the east coast]].  Through [[Virginia]], US&nbsp;1 is paralleled by Interstates: the remainder of [[Interstate 85|I-85]] to [[Petersburg, Virginia|Petersburg]], [[Interstate 95|I-95]] through [[Richmond, Virginia|Richmond]] and [[Fredericksburg, Virginia|Fredericksburg]] to [[Alexandria, Virginia|Alexandria]], and [[Interstate 395 (Virginia–District of Columbia)|I-395]] into [[Arlington County, Virginia|Arlington]]. In much of Virginia, US&nbsp;1 was called the [[Jefferson Davis Highway]] by state law, although there are exceptions. South of Petersburg, it is known as Boydton Plank Road. Through some of [[Fairfax County, Virginia|Fairfax County]] and Alexandria, it is called the Richmond Highway.<ref>{{Cite news|url=https://www.washingtonpost.com/local/dc-politics/a-plastic-straw-ban-and-a-confederate-name-change-new-laws-in-the-dc-region-in-2019/2018/12/31/60e4d954-0d1c-11e9-831f-3aa2c2be4cbd_story.html|title=A plastic straw ban and a Confederate name change: New laws in the D.C. region in 2019|last1=Nirappil|first1=Fenit|date=December 31, 2018|newspaper=Washington Post|access-date=January 3, 2019|last2=Hernandez|first2=Arelis R.|archive-date=January 3, 2019|archive-url=https://web.archive.org/web/20190103054831/https://www.washingtonpost.com/local/dc-politics/a-plastic-straw-ban-and-a-confederate-name-change-new-laws-in-the-dc-region-in-2019/2018/12/31/60e4d954-0d1c-11e9-831f-3aa2c2be4cbd_story.html|url-status=live}}</ref> In February 2021, Virginia renamed all remaining portions of the Jefferson Davis Highway in the state to Emancipation Highway beginning on January 1, 2022.<ref name=":0">{{Cite web|title=LIS > Bill Tracking > HB2075 > 2021 session|url=https://lis.virginia.gov/cgi-bin/legp604.exe?211+sum+HB2075|access-date=February 26, 2021|website=lis.virginia.gov|archive-date=February 10, 2021|archive-url=https://web.archive.org/web/20210210043922/https://lis.virginia.gov/cgi-bin/legp604.exe?211+sum+HB2075|url-status=live}}</ref><ref name=":2">{{Cite web|last=Thomas|first=Pat|title=Governor signs remaining bills from 2021 Special Session|date=March 31, 2021|url=https://www.whsv.com/2021/04/01/governor-signs-remaining-bills-from-2021-special-session/|access-date=April 3, 2021|location=Harrisonburg, Virginia|publisher=[[WHSV-TV]]|language=en|archive-date=April 1, 2021|archive-url=https://web.archive.org/web/20210401163057/https://www.whsv.com/2021/04/01/governor-signs-remaining-bills-from-2021-special-session/|url-status=live}}</ref>

US&nbsp;1 crosses the [[Potomac River]] with I-395 on the [[14th Street bridges]] and splits to follow mainly [[14th Street (Washington, D.C.)|14th Street]] and [[Rhode Island Avenue]] through the [[District of Columbia]]. US&nbsp;1 is at the minimum of three lanes (with alternate passing) from the North Carolina state line to Petersburg with occasional four-lane divided sections. North of Petersburg is a four-lane undivided roadway at the minimum to the DC line. The route of US&nbsp;1 from Petersburg to the state line is parallel with the [[Atlantic Seaboard Fall Line]]. From Petersburg onward, it is parallel with I-95. After exiting DC into [[Maryland]], US&nbsp;1 follows the Baltimore–Washington Boulevard, the first of several modern highways built along the [[Washington–Baltimore combined statistical area]] corridor; I-95 is the newest, after the [[Baltimore–Washington Parkway]]. US&nbsp;1 runs through the [[University of Maryland, College Park]], campus in [[College Park, Maryland]]. The route bypasses [[Downtown Baltimore]] on [[North Avenue (Baltimore)|North Avenue]] and exits the city to the northeast on Belair Road, gradually leaving the I-95 corridor, which passes through [[Wilmington, Delaware]], for a straighter path toward [[Philadelphia]]. Around and beyond [[Bel Air, Harford County, Maryland|Bel Air]], US&nbsp;1 is a two-lane road, crossing the [[Susquehanna River]] over the top of the [[Conowingo Dam]] before entering Pennsylvania. (Routed further north, US&nbsp;1 bypasses the state of [[Delaware]], unlike I-95.)<ref name=maps/>

The two-lane US&nbsp;1 becomes a four-lane [[Controlled-access highway|expressway]], officially known as the John H. Ware III Memorial Highway, after [[John H. Ware III|the Pennsylvania representative]], just after crossing into [[Pennsylvania]]. This bypass extends around [[Oxford, Pennsylvania|Oxford]] and [[Kennett Square, Pennsylvania|Kennett Square]], merging into the four-lane divided [[Baltimore Pike]] just beyond the latter. At [[Media, Pennsylvania|Media]], US&nbsp;1 again becomes a freeway—the Media Bypass—ending just beyond [[Interstate 476|I-476]]. After several name changes, the road becomes [[City Avenue]], the western city limits of [[Philadelphia]], at the end of which a short [[Concurrency (road)|overlap]] with [[Interstate 76 (Ohio–New Jersey)|I-76]] leads to the [[Roosevelt Expressway (Philadelphia)|Roosevelt Expressway]] and then the 12-lane [[Roosevelt Boulevard (Philadelphia)|Roosevelt Boulevard]] partly overlapping [[U.S. Route 13|US&nbsp;13]]. US&nbsp;1 again becomes a freeway after leaving the city, bypassing [[Penndel, Pennsylvania|Penndel]] and [[Morrisville, Bucks County, Pennsylvania|Morrisville]] and crossing the [[Delaware River]] into [[New Jersey]] on the [[Trenton–Morrisville Toll Bridge]].<ref name=maps/>

After crossing into [[New Jersey]] in Mercer County, US&nbsp;1 continues on the [[Trenton Freeway]] through the state capital of [[Trenton, New Jersey|Trenton]] and [[Lawrence Township, Mercer County, New Jersey|Lawrence Township]] as a four-lane freeway. As the freeway ends, the four-lane [[divided highway]] upgrades to six lanes north of [[Interstate 295 (Delaware–Pennsylvania)|I-295]] passing through the [[Penns Neck, New Jersey|Penns Neck]] section of [[West Windsor, New Jersey|West Windsor]]. Through Penns Neck is a series of traffic signals. The [[New Jersey Department of Transportation]] (NJDOT) is looking to revamp the highway through this area by replacing traffic signals with grade separations. The highway enters [[Middlesex County, New Jersey|Middlesex County]] through [[Plainsboro Township, New Jersey|Plainsboro Township]] and [[South Brunswick, New Jersey|South Brunswick]], where the highest point resides.<ref>{{Cite journal|last=Rosenthal|first=Harold|date=1983|title=Water tower in South Brunswick Township|url=https://rucore.libraries.rutgers.edu/rutgers-lib/43303/|journal=Rutgers University Community Repository|language=en|doi=10.7282/T3N58JK0|access-date=August 29, 2017|archive-date=August 30, 2017|archive-url=https://web.archive.org/web/20170830004531/https://rucore.libraries.rutgers.edu/rutgers-lib/43303/|url-status=live}}</ref> By Forrestal Village, the highway downgrades from six to four lanes until after Finnegans Lane in [[North Brunswick, New Jersey|North Brunswick]]. Northward, it continues through [[New Brunswick, New Jersey|New Brunswick]] as a short limited-access highway until the [[County Route 529 (New Jersey)|County Route&nbsp;529]] (CR&nbsp;529)/Plainfield Avenue traffic signal in [[Edison, New Jersey|Edison]]. Through Edison and [[Woodbridge Township, New Jersey|Woodbridge Township]], US&nbsp;1 has a mix of boulevard and limited-access segments and continues to do so after the [[U.S. Route 9 in New Jersey|US&nbsp;9]] juncture in the [[Avenel, New Jersey|Avenel]] section of Woodbridge. The [[U.S. Route 1/9|US&nbsp;1/9]] [[concurrency (road)|concurrency]] continues through the rest of the state. The six-lane divided highway remains through [[Rahway, New Jersey|Rahway]] in [[Union County, New Jersey|Union County]] and [[Elizabeth, New Jersey|Elizabeth]], until it reaches [[Newark Liberty International Airport]], where it becomes a dual carriageway freeway around downtown [[Newark, New Jersey|Newark]] in [[Essex County, New Jersey|Essex County]] with a 2–2–2–2 configuration. The historic [[Pulaski Skyway]] takes US&nbsp;1/9 into [[Jersey City, New Jersey|Jersey City]], and the route exits the freeway at the [[Tonnele Circle]] to head north into [[Bergen County, New Jersey|Bergen County]]. US&nbsp;1/9 turns onto [[U.S. Route 46|US&nbsp;46]] as a limited-access highway, and the three routes run northeast to the [[George Washington Bridge Plaza]], where they merge into I-95. US&nbsp;46 ends in the middle of the bridge, which crosses the [[Hudson River]] into [[New York (state)|New York]], and [[U.S. Route 9|US&nbsp;9]] exits just beyond onto [[Broadway (Manhattan)|Broadway]] in [[Manhattan]], but US&nbsp;1 stays with I-95 onto the [[Cross Bronx Expressway]], exiting in [[the Bronx]] onto Webster Avenue. Two turns take US&nbsp;1 via [[Fordham Road]] to Boston Road, which it follows northeast out of the city, becoming Boston Post Road in [[Westchester County, New York|Westchester County]], never straying far from I-95. From the Bronx to the state line, it is a local road with two lanes in each direction, except in [[Rye, New York|Rye]] where it has a single lane in each direction. As it enters [[Greenwich, Connecticut]], it continues as a two-lane local road.

===New England===
{{main|U.S. Route 1 in Connecticut|U.S. Route 1 in Rhode Island|U.S. Route 1 in Massachusetts|U.S. Route 1 in New Hampshire|U.S. Route 1 in Maine}}

In [[New England]], US&nbsp;1 generally serves large cities in a side street capacity. In [[Connecticut]], US&nbsp;1 serves the shore of [[Long Island Sound]] parallel to [[Interstate 95|I-95]]. Beyond [[New Haven, Connecticut|New Haven]], the highway travels east–west, and some signs in the state indicate this rather than the standard north–south. While I-95 in [[Rhode Island]] takes a diagonal path to [[Providence, Rhode Island|Providence]], US&nbsp;1 continues east along the coast through [[Westerly, Rhode Island|Westerly]] to [[Wakefield-Peacedale, Rhode Island|Wakefield-Peacedale]], where it turns north and follows [[Narragansett Bay]]. Most of this part is a four-lane [[limited-access highway]], providing access to [[Rhode Island Route 138|Route&nbsp;138]] toward [[Newport, Rhode Island|Newport]]. After [[Rhode Island Route 4|Route&nbsp;4]] splits as a mostly-[[freeway]] connection to I-95, US&nbsp;1 becomes a lower-speed surface road, passing through [[Warwick, Rhode Island|Warwick]], Providence, and [[Pawtucket, Rhode Island|Pawtucket]]. The route parallels I-95 again through Providence and Pawtucket and into [[Massachusetts]], traveling toward [[Boston]] as a four-lane road. When it reaches [[Dedham, Massachusetts|Dedham]], US&nbsp;1 turns east and becomes a freeway through metropolitan Boston, [[Concurrency (road)|concurrent]] with I-95 and [[Interstate 93|I-93]] east to [[Braintree, Massachusetts|Braintree]] and north through [[Downtown Boston]]. The [[Tobin Bridge]] and [[Northeast Expressway (Boston)|Northeast Expressway]] take US&nbsp;1 out of Boston, after which it again parallels I-95 as a high-speed surface road through [[Newburyport, Massachusetts|Newburyport]] to the New Hampshire state line.<ref name=maps/>

The short portion of US&nbsp;1 in [[New Hampshire]] follows the historic Lafayette Road, staying close to I-95, passing through [[Portsmouth, New Hampshire|Portsmouth]] before crossing the [[Piscataqua River]] on [[Memorial Bridge (Portsmouth, New Hampshire)|Memorial Bridge]], which was demolished and replaced during 2012–2013, leaving a temporary gap in US&nbsp;1. During construction, drivers had to detour to one of two other nearby bridges carrying [[U.S. Route 1 Bypass (Portsmouth, New Hampshire–Kittery, Maine)|US&nbsp;1 Bypass]] or I-95. Within [[Maine]], US&nbsp;1 begins as a parallel route to I-95 near the [[Atlantic Ocean]]. At [[Portland, Maine|Portland]], I-95 splits off to the north, and [[Interstate 295 (Maine)|I-295]] heads northeast paralleling US&nbsp;1 to [[Brunswick, Maine|Brunswick]]. There US&nbsp;1 turns east as a mostly two-lane road along the coast to [[Calais, Maine|Calais]]; much of this portion is advertised as the "Coastal Route" on signs. North from Calais, US&nbsp;1 follows the [[Canada–United States border|Canadian border]], crossing I-95 in Houlton and eventually turning west and southwest to its "north" end at the [[Clair–Fort Kent Bridge]] in [[Fort Kent, Maine|Fort Kent]]. The short [[New Brunswick Route 161|Route&nbsp;161]] extends north on the [[New Brunswick]] (Canada) side of the bridge to [[New Brunswick Route 120|Route&nbsp;120]], a secondary east–west route from [[Edmundston]], [[New Brunswick]], west to [[Quebec Route 289]] toward [[Saint-Alexandre-de-Kamouraska]], [[Quebec]].<ref name=maps/>