Yokohane Route

The Yokohane Route (横羽線, Yokohane-sen), signed as Route K1, is one of the tolled routes of the Shuto Expressway system serving the Greater Tokyo Area and is one of seven of the routes in the system serving Kanagawa Prefecture. The route is a 19.7-kilometer (12.2 mi) long radial highway running southwest from the southern terminus of the Haneda Route in Ōta near Haneda International Airport in Tokyo to the Kariba Route in Naka-ku, Yokohama in Kanagawa Prefecture. Alongside the Haneda Route, it connects Tokyo's Inner Circular Route in central Tokyo to Yokohama.

Shuto Expressway Yokohane Route
首都高速神奈川1号横羽線
The Yokohane Route is highlighted in orange
Route information
Maintained by Metropolitan Expressway Company Limited
Length19.7 km (12.2 mi)
Existed1968–present
Major junctions
North endHaneda entrance/exit in Ōta, Tokyo
H1 Haneda Route
South endIshikawachō Junction in Naka-ku, Yokohama, Kanagawa
K3 Kariba Route
Location
CountryJapan
Highway system

Route description

Route K1 begins at the Haneda interchange in Ōta as a continuation south for the Haneda Route into Kanagawa Prefecture. From this northern terminus, it travels southwest out of Tokyo, crossing in to the eastern part of the city of Kawasaki in Kanagawa Prefecture. The largest junction along the Yokohane Route in Kawasaki is at Daishi Junction where the highway meets the Kawasaki Route at its western terminus. In Yokohama, the expressway intersects the Yokohama North Route, the Daikoku Route, National Route 15, the Mitsuzawa Route, and National Route 1. Route K1 meets its southern terminus at Ishikawachō Junction with the Kariba Route.[1]

The speed limit along almost the entire length of the Yokohane Route is set at 60 km/h. The only exception is at the southern terminus of the route between Yokohama-kōen and Ishikawachō Junction where the limit is lowered to 50 km/h.[2]

History

The first section of the Yokohane Route was opened to traffic on 19 July 1968 between the interchanges at Asada and Higashikanagawa. Later that year, on 28 November, the expressway was extended north to its current northern terminus at Haneda. Next it was extended south to Kinkō Junction on 7 August 1972. It was extended further to the south, terminating at an interchange at Yokohama-kōen on 7 March 1978. The Yokohane Route was completed upon completion of its extension south to its southern terminus at Ishikawachō Junction on 2 February 1984.[3] Work began in 2015 to replace the Daichi Bridge that carries that expressway over the Tama River after fatigue cracks were found throughout the old bridge. The replacement project is set to be completed in 2023.[4]

  • Yokohane Route
  • The northern terminus of the route at Haneda
    The northern terminus of the route at Haneda
  • The Daishi Bridge over the Tama River. The Yokohane Route is carried by the bridges on the left. While Tonomachi-dōri is carried by the bridges on the right
    The Daishi Bridge over the Tama River. The Yokohane Route is carried by the bridges on the left. While Tonomachi-dōri is carried by the bridges on the right
  • Namamugi Junction
    Namamugi Junction
  • The expressway near Koyasu
    The expressway near Koyasu
  • Kinkō Junction
    Kinkō Junction
  • The expressway near its southern terminus
    The expressway near its southern terminus

Junction list
PrefectureLocationkmmiExitNameDestinationsNotes
TokyoŌta0.00.0150Haneda National Route 131 / Tokyo Metropolitan Route 311 (Kanpachi-dōri) – Haneda, Kamata
C1H1 Haneda Route – to Inner Circular Route		Northern terminus, expressway continues north as the Haneda Route
KanagawaKawasaki0.40.25151DaishiNR409 Kanagawa Prefecture Route 6 (Tonomachi-dōri) – to National Route 409, Ukishima, Central KawasakiSouthbound exit, northbound entrance
0.50.31—Daishi Toll Booth/Parking Area
0.70.43152ADaishi National Route 409 (Daishi Michi) – Kawasaki Station, Ukishima
BRCAK6 Kawasaki Route – to Bayshore Route, Tokyo Bay Aqua-Line		Southbound entrance, northbound exit; western terminus of the Kawasaki Route
4.52.8153HamakawasakiKanagawa Prefecture Route 6 (Sangyo-dōro) – Minamisaiwaichō, AsadachōSouthbound exit, northbound entrance
6.44.0152AsadaKanagawa Prefecture Route 6 (Sangyo-dōro) – Ikeda, Kawasaki StationSouthbound entrance, northbound exit
Yokohama7.44.6155ShioriKanagawa Prefecture Route 6 (Sangyo-dōro) – Tsurumi StationSouthbound exit, northbound entrance
9.15.7—NamamugiE83K7 Yokohama North Route west – to Daisan-Keihin Road, Shin-Yokohama
BRK5 Daikoku Route south – to Bayshore Route
9.76.0154NamamugiNR15 Kanagawa Prefecture Route 6 (Sangyo-dōro) – to National Route 15, Daikoku Wharf, Tsurumi StationSouthbound entrance, northbound exit
10.66.6157MoriyachōKanagawa Prefecture Route 6 (Sangyo-dōro) – Ebisuchō, MoriyachōSouthbound exit, northbound entrance
10.86.7159,160KoyasuNR15 Frontage road – to Daiichi-Keihin, Ebisuchō, Moriyachō, Shinkoyasu
12.67.8161,162Higashikanagawa National Route 15 (Daiichi-Keihin) – Rokkakubashi, Mizuho Wharf
14.08.7—KinkōE83K7 Mitsuzawa Route west – to Daisan-Keihin Road, Yokohama Shindō, Yokohama StationEastern terminus of the Mitsuzawa Route
14.18.8164Yokohama Station East Entrance National Route 1 (Tōkaidō) – Aokibashi, Yokohama Portside, Underground square
15.39.5165,166MinatomiraiIchō-dōri – Sakuragichō, Conference CenterPart of this interchange was previously known as Midorichō Ramp before it was upgraded into a full interchange[5]
19.011.8167,168Yokohama-kōen
19.712.2—IshikawachōBRCAK3 Kariba Route – to Bayshore Route, Tokyo Bay Aqua-LineSouthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References
  1. "横羽線". Metropolitan Expressway (in Japanese). Retrieved 13 November 2019.
  2. "首都高速道路速度規制図" [Shuto Expressway Speed Regulation Map] (PDF) (in Japanese). Retrieved 14 November 2019.
  3. "首都高の歴史". Metropolitan Expressway (in Japanese). Retrieved 13 November 2019.
  4. "Major Renovations to Metropolitan Expressway Structures". Metropolitan Expressway. Retrieved 27 November 2019.
  5. "横浜博覧会公式記録" YOKOHAMA EXOTIC SHOWCASE '89, March 1990. 巻末の会場全体図を参照
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