|Maintained by Metropolitan Expressway Company Limited|
|Length||62.1 km (38.6 mi)|
|West end||Yokohama-Yokosuka Road in Yokohama, Kanagawa|
|East end|| Tokyo Gaikan Expressway|
Higashi-Kant? Expressway in Ichikawa, Chiba
|National highways of Japan|
Expressways of Japan
The Bayshore Route (, Wangan-sen) signed as Route B, is one of the routes of the tolled Shuto Expressway system in the Greater Tokyo Area. The Bayshore Route is a 62.1-kilometer (38.6 mi) stretch of toll highway that runs in a southwest-northeast routing from the Kanazawa ward of Yokohama, to the city of Ichikawa in Chiba Prefecture. Opened in phases beginning in 1976 and ending in 2001, it is an important route that runs between the artificial islands lining the western shore of Tokyo Bay by way of bridges and sub-sea tunnels that bypass central Tokyo.
The Bayshore Route is a tolled expressway in the Shuto Expressway network of the Greater Tokyo Area and the only route of the network that serves Chiba Prefecture. Its designation as Route B designation is based on the English name for the expressway. It was constructed by the Metropolitan Expressway Company as a motorway for along Wangan-d?ro--today's National Route 357. Much of the tolled expressway is paralleled by that highway, a general-use highway. For administrative purposes, the expressway is also designated on prefecture-level as Route 294 by Chiba and Kanagawa Prefectures, and Tokyo.
The western terminus of the Bayshore Route lies at the eastern end of a spur route of the Yokohama-Yokosuka Road in the Kanazawa ward of Yokohama. It runs from Yokohama through the Yokohama Bay Bridge and Tsurumi Tsubasa Bridge, the Kawasaki Subsea Tunnel, the Tama Subriver Tunnel, Haneda Airport North Tunnel, Tokyo Bay Subsea Tunnel, which connects it to the popular tourist spot of Odaiba, and then on to Urayasu (near Tokyo Disneyland) in Chiba Prefecture. The expressway facilitates direct road travel between Chiba and Kanagawa prefectures as well as Narita and Haneda Airports. It also serves to link the ends of all of Tokyo's ring roads, aside from the Inner Circular Route. As a result, it is a vital bypass of the heavily-congested city center of Tokyo. Due to the nature of the route from Kanagawa passing through Tokyo to Chiba, the direction of travel is represented in Japanese by "eastbound/westbound" rather than the Japanese norm of "up/down" direction that only function relative to the direction one is traveling and Tokyo. The eastern terminus of the Bayshore Route connects to the southern terminus of the Higashi-Kant? Expressway and the eastern end of the Tokyo Gaikan Expressway at K?ya Junction.
Much cargo from Narita International Airport in Chiba destined for southern areas travels by way of large trucks on the Bayshore Route, though the opening of Chubu International Airport helped ease heavy truck congestion on the expressway. It's notable as Tokyo's first offshore highway, providing sightseers with spectacular urban views of Minato Mirai 21, Odaiba, the Rainbow Bridge, downtown Yokohama, and the Yokohama Bay Bridge. Although the expressway is heavily congested during the day, it is frequented by street racing during late night hours.
The Ministry of Land, Infrastructure, Transport and Tourism (MLIT), conducts surveys on the Japan's national routes and expressways every five years to measure their average daily traffic. In 2015, the most utilized point along the expressway, was in the K?t? ward of Tokyo between Tatsumi Junction and Shinkiba, where a daily average of 163,404 vehicles traveled on the Bayshore Route. The least busy section of the expressway was in Yokohama between its western terminus and the interchange at Sugita, there it carried an average of only 27,268 vehicles. Generally, the expressway is more heavily used between Haneda Airport and Chiba Prefecture. From Haneda to Yokohama, traffic levels slowly drop, then decline sharply beyond Honmoku Junction.
The first section of the Bayshore Route was completed in August 1976 between ?i and Rinkai-fukutoshin. It was expanded in stages with the earlier phases of construction generally taking place in Tokyo and Chiba. The first section of the expressway to open in Kanagawa Prefecture, where later phases of the expressway's construction were completed, opened in January 1989. The Bayshore Route was selected in April 2000 to be one of two trial routes of the Shuto Expressway network for the implementation of electronic toll collection (ETC). The ETC system was popular among the route's drivers and was implemented throughout the network in December 2003. The final link in the expressway was opened in October 2001 between the interchanges at Sugita and Sankeien.
There have been several developments on the Bayshore Route since its completion in 2001. Between 2004 and 2008, the expressway was widened to four lanes in each direction in a series of projects in the wards of Minato and K?t?. The first of these widening projects was completed in 2004 on the westbound side of the expressway between Shinkiba and Tatsumi Junction on 17 September 2004. The final stage of the project was completed on March 2008 with the widening of the eastbound section of the Bayshore Route between Tatusmi and Ariake Junction. Part of this expansion project also made room for the addition of Shinonome Junction where the Bayshore Route meets the southern terminus of the Harumi Route. The junction was opened on 11 February 2009.
On 4 March 2017 the interchange at Minami-honmoku fut? in Yokohama was completed, providing a direct connection from the Bayshore Route to Honmoku Wharf by a 2.5-kilometer-long (1.6 mi) viaduct. K?ya Junction was expanded on 2 June 2018 to add the Tokyo Gaikan Expressway to the highways served by the terminal junction of the Bayshore Route.
|Kanagawa||Yokohama||0.0||0.0||--||Yokohama-Yokosuka Road west (Kanazawa spur) - Yokosuka, Miura||Western terminus, expressway continues west as the Yokohama-Yokosuka Road|
|0.9||0.56||B01||Sachiura||National Route 357 - Hakkeijima, Uminok?en||Westbound exit, eastbound entrance|
|2.8||1.7||--||Torihamach? Toll Booth||Toll booth for eastbound traffic|
|4.0||2.5||B02 / B03||Sugita||National Route 357 - Sugita, Kannai, Honmoku, Hakkeijima|
|6.1||3.8||B05||Isogo|| National Route 357 - Hakkeijima, Sugita|
Yokohama City Loop Route 2 (By?bugaura Bypass) - Shin-Yokohama, Hino
|Westbound exit, eastbound entrance|
|10.9||6.8||B06||Sankeien||National Route 357 - Yamashita Park, Honmoku Wharf||Westbound entrance, eastbound exit|
|13.0||8.1||B07A||Minami-honmoku fut?||Minami-honmoku Avenue||Westbound exit, eastbound entrance|
|14.3||8.9||B07B||Honmoku fut?||National Route 357 west - Hakkeijima, Isogo, A, B, C, and D pier||Westbound exit, eastbound entrance|
|14.3||8.9||--||Honmoku||Kariba Route west - to Yokohama Shind?, Daisan Keihin Road|
|17.4||10.8||B08 / B09||Daikoku|| Daikoku Route north - to Daikoku Parking Area, Yokohane Route, Yokohama North Route, Shin-Yokohama|
?gurobashi-d?ri - Umizuri Park, Namamugi, Daikoku Pier
|B10 / B11||Higashi?gishima||National Route 357 - to National Route 132, central Kawasaki, Kawasaki Port|
|Port of Kawasaki Tunnel|
|29.5||18.3||--||Kawasaki-Ukishima|| Tokyo Bay Aqua-Line east / National Route 409 east - Kisarazu|
Kawasaki Route west - Central Kawasaki
|29.5||18.3||B12 / B13||Ukishima||National Route 409 west - Ukishimach?|
|Tamagawa Tunnel under the Tama River|
|Tokyo||?ta||31.8||19.8||B14||Wangan Kanpachi||National Route 357 east - to Kanpachi-d?ri, Haneda Airport Terminal 1, International Terminal||Westbound entrance, eastbound exit|
|34.5||21.4||B16 / B17||Haneda Airport||National Route 357 - Haneda Airport Terminal 2|
|K?k?-kita Tunnel under Haneda Airport|
|38.6||24.0||--||T?kai||Haneda Route south - to Yokohane Route, Yokohamak?en||Westbound exit, eastbound entrance|
|39.4||24.5||B18 / B19||?i-minami||National Route 357 - Central Shinagawa, Haneda Airport, Katsushima, ?i Wharf|
|41.1||25.5||--||?i|| Central Circular Route north - to Shibuya Route, T?mei Expressway, Ch Expressway|
Haneda Route north - to Inner Circular Route
|No access from Haneda Route to Bayshore Route|
|41.3||25.7||B21||?i||National Route 357 - Central Shinagawa, ?imachi||Westbound exit, eastbound entrance|
|Tokyo-k? Tunnel under Tokyo Bay|
|Minato||43.1||26.8||B22||Rinkai-fukutoshin||National Route 357 - Daiba, Tokyo Big Sight, Ferry Wharf||Westbound entrance, eastbound exit|
|K?t?||44.9||27.9||--||Ariake||Daiba Route west - to Inner Circular Route, Rainbow Bridge|
|45.9||28.5||--||Shinonome||Harumi Route north - Toyosu|
|45.9||28.5||B23||Ariake||National Route 357 - Daiba, Tokyo Big Sight, Ferry Wharf||Westbound exit, eastbound entrance|
|47.6||29.6||--||Tatsumi||Fukagawa Route north - to Mukojima Route, Hakozaki||Interchange features a parking area|
|49.0||30.4||B24 / B25||Shinkiba||National Route 357 - Tokyo Heliport, Yumenoshima, Meiji-d?ri, Shinkiba, Minamisuna|
|Edogawa||50.9||31.6||--||Kasai||Central Circular Route north - to Mukojima Route, T?hoku Expressway, J?ban Expressway|
|52.3||32.5||B26 / B27||Kasai||National Route 357 - Kannana-d?ri, Kasai Rinkai Park|
|Chiba||Urayasu||53.7||33.4||B28||Maihama||Entrance ramp from Tokyo Disney Resort||Westbound entrance only|
|55.7||34.6||B30 / B31||Urayasu||National Route 357 - Tokyo Disney Resort|
|Ichikawa||59.6||37.0||B32||Chidorich?||National Route 357 - Funabashi, central Ichikawa||Soutbound entrance, eastbound exit|
|60.5||37.6||--||Ichikawa Toll Booth||Toll booth and parking area for westbound traffic|
|62.1||38.6||--||K?ya|| Tokyo Gaikan Expressway north - Misato, Kawaguchi|
Higashi-Kant? Expressway north - Narita, Chiba, Narita
|Eastern terminus, expressway continues north as the Higashi-Kant? Expressway|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|