A bypass is a road or highway that avoids or "bypasses" a built-up area, town, or village, to let through traffic flow without interference from local traffic, to reduce congestion in the built-up area , to improve road safety and as replacement for obsolete roads that are no longer in use as a result of devastating natural disasters (earthquakes, tsunamis, landslides, volcanic eruptions). A bypass specifically designated for trucks may be called a truck route .
53-447: The Moscow Automobile Ring Road (Russian: Московская кольцевая автомобильная дорога , romanized: Moskovskaya koltsevaya avtomobilnaya doroga ), or MKAD ( МКАД ), is a ring road running predominantly on the city border of Moscow with a length of 108.9 km (67.7 mi) and 35 exits (including ten interchanges). It was completed in 1962. The speed limit is 100 km/h. The growth of traffic in and around Moscow in
106-538: A built-up area and/or as replacement for roads that became obsolete and inactive because devastating natural disasters — those who oppose the development of (often rural) undeveloped land. A city may also oppose the project, because of the potential reduction in city core. In Ontario , examples include the Donald Cousens Parkway (formerly named the Markham Bypass from 2004 to 2006) and
159-424: A bypass, converting it into an ordinary town road, and the bypass may eventually become as congested as the local streets it was intended to avoid. Many businesses are often built there for ease of access, while homes are often avoided for noise and pollution reasons. Bypass routes are often on new land where no road originally existed. This creates a conflict between those who support a bypass to reduce congestion in
212-413: A city or town, with the standard of road being anything from an ordinary city street up to motorway level. An excellent example of this is London's North Circular/South Circular ring roads, which are largely made up of (mainly congested) ordinary city streets. In some cases, a circumferential route is formed by the combination of a major through highway and a similar-quality loop route that extends out from
265-669: A complete belt road around Hawaii Island . Other major U.S. cities with such a beltway superhighway: There are other U.S. superhighway beltway systems that consist of multiple routes that require multiple interchanges and thus do not provide true ring routes. Two designated examples are the Capital Beltway around Harrisburg, Pennsylvania using Interstate 81 , Interstate 83 , and Pennsylvania Route 581 and "The Bypass" around South Bend, Indiana using Interstate 80 , Interstate 90 , U.S. Route 31 , and Indiana State Road 331 . Edmonton , Alberta, has two ring roads. The first
318-527: A long time the MKAD served as the administrative boundary of Moscow city, until in the 1980s Moscow started annexing territory outside the beltway. In December 2002 Bulvar Dmitriya Donskogo became the first Moscow Metro station that opened beyond the limits of MKAD. In 1995–1999, the road was widened from the initial four to ten lanes, while all intersections became grade-separated , bridges were built to accommodate pedestrians, traffic lights were removed, and
371-423: A ring road or ring road system: In Iceland , there is a 1,332 km ring road, called the ring road (or Route 1), around most of the island (excluding only the remote Westfjords ). Most of the country's settlements are on or near this road. Major cities that are served by a ring road or ring road system: Bypass (road) If there are no strong land use controls, buildings are often built in town along
424-502: A solid concrete barrier was installed in the median . In 2001, all slow-moving vehicles were banned from entering the MKAD, and the renovated road received a freeway designation from the mayor's office . Ring roads in Moscow: Comparison to other ring roads encircling big cities: Ring road A ring road (also known as circular road, beltline , beltway , circumferential ( high ) way , loop or orbital )
477-528: A through-the-city route there, with the Beltway encircling the city as I-495. The portion of I-95 entering the city from the south was soon completed (and so signed), primarily by adapting an existing major highway, but the planned extension of I-95 through residential areas northward to the Beltway was long delayed, and eventually abandoned, leaving the eastern portion of the Beltway as the best Interstate-quality route for through traffic. This eastern portion of
530-634: A town or city, typically without either signals or road or railroad crossings. In the United States, beltways are commonly parts of the Interstate Highway System. Similar roads in the United Kingdom are often called "orbital motorways". Although the terms "ring road" and "orbital motorway" are sometimes used interchangeably, "ring road" often indicates a circumferential route formed from one or more existing roads within
583-532: A true ring road around Detroit is effectively blocked by its location on the border with Canada and the Detroit River ; although constructing a route mostly or entirely outside city limits is technically feasible, a true ring around Detroit would necessarily pass through Canada, and so Interstate 275 and Interstate 696 together bypass but do not encircle the city. Sometimes, the presence of significant natural or historical areas limits route options, as for
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#1732779588758636-405: Is a loose conglomeration of four major arterial roads with an average distance of 6 kilometres (3.7 mi) from the downtown core. Yellowhead Trail forms the northern section, Wayne Gretzky Drive /75 Street forms the eastern section, Whitemud Drive forms the southern and longest section, and 170 Street forms the western and shortest section. Whitemud Drive is the only section that
689-409: Is a road or a series of connected roads encircling a town, city or country. The most common purpose of a ring road is to assist in reducing traffic volumes in the urban centre, such as by offering an alternate route around the city for drivers who do not need to stop in the city core. Ring roads can also serve to connect suburbs to each other, allowing efficient travel between them. The name "ring road"
742-495: Is a series of tunnels between Central and Causeway Bay . Malaysia also contain several bypasses such as Rawang Bypass , Kajang Bypass , Bidor Bypass and Kuala Terengganu Bypass . Bypass roads (or in other cases "diversion roads") in the Philippines are generally considered on national highways passing through a densely populated city or municipality. Local governments usually promote construction of bypasses where
795-413: Is a true controlled-access highway , while Yellowhead Trail and Wayne Gretzky Drive have interchanges and intersections and are therefore both limited-access roads . 170 Street and 75 Street are merely large arterial roads with intersections only. The second and more prominent ring road is named Anthony Henday Drive ; it circles the city at an average distance of 12 kilometres (7.5 mi) from
848-508: Is also sometimes used to refer to a short temporary roadway built to bypass a construction site or other temporary obstruction. The U.S. Manual on Uniform Traffic Control Devices uses the term "diversion". In Brazil the widest and busiest bypasses are located in the state of São Paulo, and many of them intersect and merge around large cities to form ring-like systems. Most notably the Rodoanel Mário Covas , which encircles
901-417: Is challenging when a through highway and a loop bypass together form a circumferential ring road. Since neither of the highways involved is circumferential itself, either dual signage or two (or more) route numbers is needed. The history of signage on the Capital Beltway around Washington, D.C., is instructive here. Interstate 95 , a major through highway along the U.S. East Coast , was originally planned as
954-789: Is colloquially named the Cobequid Pass ; this name is for a section of road that bypasses the Wentworth Valley by crossing the Cobequid Mountains . The idea of bypasses predates the use of motor vehicles. The first (northern) London bypass, the present Marylebone Road between Paddington and Islington , was started in 1756. Bypasses can take many years to gain planning approval and funding. Many towns and villages have been campaigning for bypasses for over 30 years e.g. Banwell in North Somerset . There
1007-846: Is used for the majority of metropolitan circumferential routes in Europe, such as the Berliner Ring , the Brussels Ring , the Amsterdam Ring , the Boulevard Périphérique around Paris and the Leeds Inner and Outer ring roads. Australia , Pakistan and India also use the term ring road, as in Melbourne 's Western Ring Road , Lahore 's Lahore Ring Road and Hyderabad 's Outer Ring Road . In Canada
1060-500: The Capital Beltway around Washington, D.C. Some ring roads, such as Washington's Capital Beltway, use "Inner Loop" and "Outer Loop" terminology for directions of travel, since cardinal (compass) directions cannot be signed uniformly around the entire loop. The term 'ring road' is occasionally – and inaccurately – used interchangeably with the term ' bypass '. Bypasses around many large and small towns were built in many areas when many old roads were converted to four-lane status in
1113-1134: The East Kowloon Corridor , the West Kowloon Corridor , and the Lung Cheung and Ching Cheung Roads . Later ones are named directly as bypasses, such as Kwun Tong Bypass , Hung Hom Bypass , and the Ma On Shan Bypass . Other bypasses include the Tai Po Section of the Tolo Highway , the section within the Tuen Mun New Town of the Tuen Mun Road , the Yuen Long Highway , and the West Kowloon Highway . The Central-Wan Chai Bypass , which costs HK$ 28.1 billion,
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#17327795887581166-474: The Frankfurt area, major national highways converge just outside city limits before forming one of several routes of an urban network of roads circling the city. Unlike in United States, route numbering is not a challenge on European ring roads as routes merge to form the single designated road. However, exit and road junction access can be challenging due to the complexity of other routes branching from or into
1219-943: The North and South Circular roads and the Inner Ring Road ). Birmingham also has three ring roads which consist of the Birmingham Box ; the A4540 , commonly known as the Middleway; and the A4040 , the Outer Ring Road. Birmingham once had a fourth ring road, the A4400 . This has been partially demolished and downgraded to improve traffic flow into the city. Other British cities have two: Leeds , Sheffield , Norwich and Glasgow . Cleveland, OH and San Antonio, TX , in
1272-505: The St. Joseph Valley Parkway ), and Interstate 75 bypassing Tampa and St. Petersburg, Florida . These bypasses usually carry mainline routes rather than auxiliary "bypass" routes. The first bypass route in the United States was completed in 1958 as Alabama State Route 210 (Ross Clark Circle) in Dothan, Alabama . In the United States, the term shoofly – a borrowing from railroad jargon –
1325-495: The United States , also each have two, while Houston, Texas will have three official ring roads (not including the downtown freeway loop). Some cities have far more – Beijing , for example, has six ring roads , simply numbered in increasing order from the city center (though skipping #1), while Moscow has five, three innermost ( Central Squares of Moscow , Boulevard Ring and Garden Ring ) corresponding to
1378-866: The 1930s to 1950s, such as those along the Old National Road (now generally U.S. 40 or Interstate 70 ) in the United States, leaving the old road in place to serve the town or city, but allowing through travelers to continue on a wider, faster and safer route. Construction of fully circumferential ring roads has generally occurred more recently, beginning in the 1960s in many areas, when the U.S. Interstate Highway System and similar-quality roads elsewhere were designed. Ring roads have now been built around numerous cities and metropolitan areas, including cities with multiple ring roads, irregularly shaped ring roads and ring roads made up of various other long-distance roads. London has three ring roads (the M25 motorway ,
1431-680: The 1950s and not yet completed, called the Suburban Beltway. It consists of several roads— Lagimodière Boulevard , Abinojii Mikanah , the Fort Garry Bridge, the Moray Bridge, William R Clement Parkway , Chief Peguis Trail and the Kildonan Bridge . Saskatoon , Saskatchewan, has a ring road named Circle Drive. It is cosigned as Saskatchewan Highway 16 and Saskatchewan Highway 11 along the whole route since
1484-423: The 1950s made the city planners realise Russia's largest metropolis needed a bypass to redirect incoming traffic from major roads that run through the city. Opened in 1961, the MKAD had four lanes of asphalt running 108.9 kilometres along the city borders. Although not yet a freeway , it featured interchanges at major junctions , very few traffic lights , and a speed limit of 100 km/h (62 mph). For
1537-415: The 2013 opening of Circle Drive South. Regina , Saskatchewan has a partial ring road that is named Ring Road ; however, due to the city's urban growth since the road was originally constructed, it no longer functions as a true ring road and has instead come to be used partially for local arterial traffic. The Regina Bypass , a new partial ring road, has replaced it, although Ring Road must still be used in
1590-604: The Beltway ", derived metonymically from the Capital Beltway encircling Washington, D.C. Ring roads have been criticised for inducing demand , leading to more car journeys being taken and thus higher levels of pollution being created. By creating easy access by car to large areas of land, they can also act as a catalyst for development, leading to urban sprawl and car-centric planning. Ring roads have also been criticised for splitting communities and being difficult to navigate for pedestrians and cyclists. Most orbital motorways (or beltways) are purpose-built major highways around
1643-468: The Beltway was then redesignated from I-495 to I-95, leaving the I-495 designation only on the western portion, and the completed part of the planned Interstate inside the Beltway was redesignated as a spur, I-395 . A few years later, the resulting confusion from different route numbers on the circumferential Beltway was resolved by restoring I-495 signage for the entire Beltway, with dual signage for I-95 for
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1696-741: The Box Grove Bypass in the city of Markham ; and in Toronto a section of Highway 401 was called the Toronto Bypass in the 1950s when the highway was built as a bypass of Highway 2 , Ontario Highway 2A which was built to bypass Highway 2 between Toronto and Newcastle , and the Caledonia Bypass, a section of Highway 6 in Caledonia. In Nova Scotia , the section of Highway 104 between Thomson Station and Masstown
1749-424: The United States, primary routes are designated with a one- or two-digit number , while bypasses and loops are generally designated with a three-digit number beginning with an even digit . However, there are many exceptions to this convention, where routes with three-digit numbers serve the main route through town while the routes with one- or two-digit numbers serve as the bypass. A few such examples can be found in
1802-461: The United States. In many cases, such as Interstate 285 in Atlanta, Georgia , circumferential highways serve as a bypass while other highways pass directly through the city center. In other cases, a primary Interstate highway passes around a city on one side, with a connecting loop Interstate bypassing the city on the other side, together forming a circumferential route, as with I-93 and I-495 in
1855-592: The area of Lawrence, Massachusetts . However, if a primary Interstate passes through a city and a loop bypasses it on only one side (as in the Wilmington, Delaware , area), no fully circumferential route is provided. Within cities, ring roads sometimes have local nicknames; these include Washington DC's Interstate 495 (The "Capital Beltway"), Interstate 270 in Columbus, Ohio (The "Outerbelt"), and Interstate 285 in Atlanta (The "Perimeter"). Route numbering
1908-475: The city of Calgary , Alberta, for an entire length of 101-kilometre (63 mi). Winnipeg , Manitoba, has a ring road which is called the Perimeter Highway . It is designated as Manitoba Highway 101 on the north, northwest and east sides and as Manitoba Highway 100 on the south and southwest sides. The majority of it is a four-lane divided expressway . It has a second ring road, planned since
1961-502: The city of São Paulo and passes through other cities in the metropolitan area, is the largest project of such type with a planned total length of 180 km upon completion. It is divided into sections and connected to major highways and while not being a toll road itself, accesses to other motorways are often placed through toll booths. Hong Kong contains several bypasses. The first are the Island Eastern Corridor ,
2014-614: The concentric lines of fortifications around the ancient city, and the two outermost ( MKAD and Third Ring ) built in the twentieth century, though, confusingly, the Third Ring was built last. Geographical constraints can complicate the construction of a complete ring road. For example, the Baltimore Beltway in Maryland formerly crossed Baltimore Harbor on a high arch bridge prior to its collapse in 2024, and much of
2067-509: The downtown core. It is a freeway for its entire 78-kilometre (48 mi) length, and was built to reduce inner-city traffic congestion, created a bypass of Yellowhead Trail, and has improved the movement of goods and services across Edmonton and the surrounding areas. It was completed in October 2016 as the first free-flowing orbital road in Canada. Stoney Trail is a ring road that circles
2120-665: The highway's concurrent use as a through Interstate on its eastern portion. The longest complete beltway in the United States is the Charles W. Anderson Loop , a 94-mile (151 km) loop in Texas that forms a complete loop around the Greater San Antonio area. The longest complete belt road, or a beltway that is only two lanes, in the United States is Hawaii Belt Road , a 260-mile (420 km) belt in Hawaii that forms
2173-542: The long-proposed Outer Beltway around Washington, D.C., where options for a new western Potomac River crossing are limited by a nearly continuous corridor of heavily visited scenic, natural, and historical landscapes in the Potomac River Gorge and adjacent areas. When referring to a road encircling a capital city, the term "beltway" can also have a political connotation, as in the American term " Inside
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2226-458: The metropolitan areas of Des Moines, Iowa ( Interstate 235 goes through downtown, while Interstate 35 and Interstate 80 bypass downtown), Omaha, Nebraska ( Interstate 480 traverses the downtown area , while Interstate 80 is one of the bypasses), and Pittsburgh, Pennsylvania (the city is served by Interstate 279 and Interstate 376 , while Interstate 70 , Interstate 76 , and Interstate 79 all bypass city limits). Another meaning of
2279-711: The northeast quadrant of the city. Hamilton , Ontario, has the Lincoln M. Alexander Parkway , Highway 403 and the Red Hill Valley Parkway which form a ring on three sides. Sudbury , Ontario, has a partial ring road consisting of the Southwest and Southeast Bypasses segment of Highway 17 , and the Northwest Bypass segment of Highway 144 . An unofficial northeast "bypass" route can also be completed on city arterial roads that largely bypass
2332-492: The old bypass route of U.S. Route 71 to the east of Kansas City, Missouri was decommissioned as Interstate 435 supplanted it; the remainder that existed as suburban surface route became Missouri Route 291 . Around St. Louis, Missouri , what had been U.S. Route 50 Bypass was absorbed into a diversion of U.S. Route 50 from Interstate 44 and Interstate 64 . In the Interstate Highway System in
2385-522: The parent road, later reconnecting with the same highway. Such loops not only function as a bypass for through traffic, but also to serve outlying suburbs . In the United States, an Interstate highway loop is usually designated by a three-digit number beginning with an even digit before the two-digit number of its parent interstate. Interstate spurs, on the other hand, generally have three-digit numbers beginning with an odd digit. Circumferential highways are prominent features in or near many large cities in
2438-691: The partially completed Stockholm Ring Road in Sweden runs through tunnels or over long bridges. Some towns or cities on sea coasts or near rugged mountains cannot have a full ring road. Examples of such partial ring roads are Dublin's ring road ; and, in the USA, Interstate 287 , mostly in New Jersey (bypassing New York City), and Interstate 495 around Boston , none of which completely circles these seaport cities. In other cases, adjacent international boundaries may prevent ring road completion. Construction of
2491-476: The ring road. One of the most renowned ring roads is the Vienna Ring Road ( Ringstraße ), a grand boulevard constructed in the mid-19th century and filled with representative buildings. Due to its unique architectural beauty and history, it has also been called the "Lord of the ring roads", and is declared by UNESCO as part of Vienna's World Heritage Site . Major European cities that are served by
2544-447: The term bypass route (usually simply called a bypass ) is a highway that was constructed to bypass an area that is often congested with traffic. This includes Interstate Highway beltways and U.S. Highways constructed to circumvent downtown areas. Examples of these are U.S. Route 60 bypassing Williamsburg, Virginia , Interstate 285 bypassing Downtown Atlanta , U.S. Route 20 / U.S. Route 31 bypassing metro South Bend, Indiana (on
2597-572: The term is the most commonly used, with "orbital" also used, but to a much lesser extent. In Europe and Australia, some ring roads, particularly longer ones of motorway standard, are known as "orbital motorways". Examples are the London Orbital (generally known as the M25; 188 km), Sydney Orbital Network (110 km) and Rome Orbital (68 km). In the United States many ring roads are called beltlines , beltways or loops , such as
2650-600: The town, but the designation was changed to "bypass" in 1959 by AASHTO . However, many "truck" routes remain where the mainline of the highway is prohibited for trucks. In a few cases, both a bypass and a business route exist, each with auxiliary signs (e.g. U.S. Route 60 in Lexington, Kentucky ). Bypass routes are less common than business routes. Many of those that existed before the era of Interstate Highways have lost their old designations. For example, in Missouri ,
2703-479: The urban core of the city, but are not fully controlled-access and must be shared with local traffic in the Nickel Centre and Rayside-Balfour districts of the city. Most major cities in Europe are served by a ring road that circles either the inner core of their metropolitan areas or the outer borders of the city proper or both. In major transit hubs, such as the Île-de-France region surrounding Paris and
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#17327795887582756-663: Was chosen in reference to the First Battle of Newbury of 1643 and the Second Battle of Newbury of 1644, both of which took place close to the town during the English Civil War . In the United States , bypass routes are a type of special route used on an alternative routing of a highway around a town when the main route of the highway goes through the town. The original designation of these routes were "truck routes" to divert through truck traffic away from
2809-642: Was large-scale protest during construction of the Newbury bypass —officially known as the Winchester–Preston Trunk Road (A34) (Newbury Bypass)—a 9-mile (14 km) stretch of dual carriageway which bypasses the town of Newbury in Berkshire , England . The protest was popularly known as the Third Battle of Newbury , a name which was also adopted by one of the main protest groups. The name
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