16-477: Interstate 195 ( I-195 ) is a 4.42-mile-long (7.11 km) auxiliary Interstate Highway connecting I-95 , its parent route, in the west with Miami Beach in the east. It crosses Biscayne Bay by traveling over the Julia Tuttle Causeway . The causeway is named after Miami founder Julia Tuttle . It is part of the longer State Road 112 (SR 112), which continues to the west as
32-451: A place where the highway mileage resets to zero. Beltways are also preceded by an even number in the first digit. Some examples of beltways include: Unsigned highway An unsigned highway is a highway that has been assigned a route number , but does not bear road markings that would conventionally be used to identify the route with that number. Highways are left unsigned for a variety of reasons, and examples are found throughout
48-458: A state. There are three states that have no auxiliary Interstate Highways: Alaska, Arizona, and New Mexico. North Dakota has an auxiliary route, but it is unsigned , and Wyoming's does not meet Interstate Highway standards. Auxiliary Interstates are divided into three types: spur , loop , and bypass routes. The first digit of the three digits usually signifies whether a route is a bypass, spur, or beltway. The last two digits are derived from
64-659: The Airport Expressway and to the east as Arthur Godfrey Road (41st Street). As part of a pilot program, the Florida Department of Transportation painted the shoulders as bike lanes east of US Highway 1 (US 1). Pedestrians are still prohibited. I-195 begins at the eastern end of the I-95 and SR 112 interchange , also known as the 36th Street Interchange, heading east with interchanges with Miami Avenue and US 1 before heading onto
80-583: The Airport Expressway, I-195, and the I-195 Spur along with a stretch of I-95 in Miami . The I-195 Spur was the surface portion of the west–east state road along Arthur Godfrey Road in Miami Beach , connecting I-195 and SR A1A east of the causeway. The I-195 Spur signs disappeared from the road shortly after the designation was decommissioned by the newly formed U.S. Department of Transportation in
96-603: The Julia Tuttle Causeway, where the Interstate crosses Biscayne Bay . At the eastern end of the causeway in Miami Beach, it has an interchange with SR 907 before terminating at the intersection of SR 907A and Arthur Godfrey Road, about a mile (1.6 km) west of SR A1A . On December 23, 1961, three signed roads along the route of SR 112 were opened: the 36th Street Tollway, now
112-429: The different classes of routes they maintain (freeways, expressways, rural roads, etc.). In such cases, one or more class of numbers may be reserved for minor routes and these may or may not be signed. Often roads that serve as a connector to a major highway are signed to show the connection to the major road, rather than the road's actual designation. Some highways are not signed to avoid multiple designations, such as when
128-409: The entire route runs concurrent with other highways. There are several instances where a route has officially been given a name by government agencies, and is signed with that name, but the route is also assigned a number by the highway maintenance agencies as to fit in their maintenance and inventory systems. Another common reason to not sign a highway is where the highway is government maintained, but
144-678: The late 1960s. Famously, in early 1975, the rhythm of their car on this road was the inspiration for the Bee Gees 's song " Jive Talkin' ". The entire route is in Miami-Dade County . Auxiliary Interstate Highway Auxiliary Interstate Highways (also called three-digit Interstate Highways ) are a subset of highways within the United States' Interstate Highway System . The 323 auxiliary routes generally fall into three types: spur routes , which connect to or intersect
160-562: The main Interstate Highway. For instance, I-115 contains an odd number in the first digit (1), which indicates that this freeway is a spur. The last two digits signify the highway's origin. In this case, the "15" in I-115 shows that it is a supplement to I-15 . Exceptions to the standard numbering guidelines exist for a number of reasons. In some cases, original routes were changed, extended, or abandoned, leaving discrepancies in
176-542: The parent route at one end; bypasses , which connect to the parent route at both ends; and beltways , which form a circle that intersects the parent route at two locations. Some routes connect to the parent route at one end but to another route at the other end; some states treat these as spurs while others treat them as bypasses. Like the primary Interstate Highways , auxiliary highways meet Interstate Highway standards (with rare exceptions ). The shorter auxiliary routes branch from primary routes; their numbers are based on
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#1732775557265192-489: The parent route's number. All of the supplement routes for Interstate 95 (I-95) are designated with a three-digit number ending in "95": I-x95. With some exceptions, spur routes are numbered with an odd hundreds digit (such as I-395 ), while bypasses and beltways are numbered with an even hundreds digit (such as I-695 ). Because longer Interstates may have many such supplemental routes, the numbers can repeat from state to state along their route, but they will not repeat within
208-415: The same Interstate, some states treat these as bypasses while others treat these as spurs—see Spur route above. A beltway (also known as a loop route ) completely surrounds a metropolitan city, and it is often connected with multiple junctions to other routes. Unlike other auxiliary Interstate Highways (and by extension, all primary Interstate Highways ), beltways do not have termini; however, they have
224-516: The system. In other cases, it may not be possible to use the proper number because the limited set of available numbers has been exhausted, causing a "non-standard" number to be used. A spur route 's number usually has an odd number for its first digit. It is usually one of the following: Examples include: Sometimes, a three-digit Interstate Highway branches off from another three-digit Interstate Highway. These spurs do not connect directly with their parent highways, but are associated with them via
240-472: The three-digit highways they do intersect with. Examples include: A bypass route may traverse around a city, or may run through it with the mainline bypassing. In a typical 3-digit Interstate Highway, bypasses usually have both its two termini junctioned with another Interstate highway. Bypass routes are preceded by an even number in the first digit. Examples include: In the case of an auxiliary Interstate highway which has both ends at Interstates but not
256-703: The world. Depending on the policy of the agency that maintains the highway, and the reason for not signing the route, the route may instead be signed a different designation from its actual number, with small inventory markers for internal use, or with nothing at all. There are a variety of cases where roads are officially designated, but have no markings to show that designation. Many highway maintenance agencies assign some form of number to all highways, bridges, and other features they maintain for tracking and inventory purposes. However, policies vary regarding how and when to publicly post these assigned numbers. Several highway maintenance agencies have multiple numbering systems for
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