Kawaguchi Route

The Kawaguchi Route (川口線, Kawaguchi-sen), signed as Route S1, is one of the routes of the Shuto Expressway system serving the Greater Tokyo Area. The route is a 12.2-kilometer (7.6 mi) long radial highway running north from Adachi, Tokyo to Kawaguchi, Saitama. It primarily connects central Tokyo to the Tōhoku Expressway and points further north such as Sendai and Aomori.

Kawaguchi Route
Route information
Maintained by Metropolitan Expressway Company Limited
Length12.2 km (7.6 mi)
Existed1987–present
Major junctions
South endKōhoku Junction in Adachi, Tokyo
C2 Central Circular Route (Shuto Expressway)
North endKawaguchi Junction in Kawaguchi, Saitama
Tokyo Gaikan Expressway
Tōhoku Expressway
Location
CountryJapan
Highway system

Route description
The northern terminus of the Kawaguchi Route at Kawaguchi Junction facing south

The speed limit is 60 km/h for the first 4 kilometers (2.5 mi) of the route between Kōhoku Junction and the Kaga exit and entrance. From the Kaga exit and entrance north to Kawaguchi Junction the speed limit is 80 km/h.

History

The Kawaguchi Route was opened on 9 September 1987 alongside a section of the Central Circular Route. Upon opening, the expressway formed the first of many links between the expressways of northern Honshu to the expressways of the rest of the island and Kyushu. On 25 December 2002 access at Kōhoku Junction was extended to westbound traffic on the Central Circular Route.[1]

On 20 July 2008, a project was completed on the Kawaguchi Parking Area to give its facilities a face-lift, add greenery, and to increase the size of its parking lot.[2]

Junction list

PA= Parking area, TB= Toll booth[3]

PrefectureLocationkmmiExitNameDestinationsNotes
TokyoAdachi0.00.0—KōhokuC2 Central Circular Route (Shuto Expressway) – Ginza, ShinjukuSouthern terminus
1.40.87S01Shikahama BridgeTokyo Metropolitan Route 107Full access to and from northbound traffic; no access to southbound traffic
1.40.87S02Shikahama BridgeTokyo Metropolitan Route 318 (Kanana-dori)Access only from northbound traffic to Route 318
Saitama PrefectureKawaguchi3.72.3S04Higashi-RyokeSaitama Prefecture Route 107 (Kan-nana-dori)Southbound exit only
TokyoAdachi4.02.5S05KagaTokyo/Saitama Route 239 (Adachi-Kawaguchi Route)Southbound entrance; northbound exit
6.03.7S06Adachi-iriyaTokyo/Saitama Route 106 (Tokyo Hatogaya Route) / Tokyo/Saitama Route 239 (Adachi-Kawaguchi Route)Southbound exit; northbound entrance
SaitamaKawaguchi6.84.2S07ShingōSaitama Prefecture Route 58 (Taitō-Kawaguchi Route) / Saitama Prefecture Route 239 (Adachi-Kawaguchi Route)Southbound entrance; northbound exit
7.84.8S08ShingōSaitama Prefecture Route 58 (Taitō-Kawaguchi Route) / Saitama Prefecture Route 239 (Adachi-Kawaguchi Route)Southbound exit; northbound entrance
8.75.4S09AngyōSaitama Prefecture Route 239 (Adachi-Kawaguchi Route)Southbound entrance; northbound exit
10.66.6PAKawaguchiAccessible only by southbound traffic
10.76.6TBKawaguchiSouthbound traffic only
11.16.9S11AraijukuSaitama Prefecture Route 239 (Adachi-Kawaguchi Route) to – National Route 122 / National Route 298Southbound entrance; northbound exit
12.27.6—Kawaguchi Tokyo Gaikan Expressway
Tōhoku Expressway north – Ōizumi, Misato		Northern terminus; expressway continues as the Tōhoku Expressway
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References
  1. "首都高の歴史". Metropolitan Expressway (in Japanese). Retrieved 4 June 2019.
  2. "首都高川口PAがリニューアル　緑豊かに". Interface In Design, Inc. (in Japanese). Retrieved 4 June 2019.
  3. "高速川口線". Metropolitan Expressway (in Japanese). Retrieved 3 June 2019.
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