# Higashi-Kantō Expressway

The Higashi-Kantō Expressway (東関東自動車道, Higashi Kantō Jidōsha-dō) (lit. East Kantō Expressway) is a national expressway in Japan. It is owned and operated by East Nippon Expressway Company.

## Overview

Officially the expressway is referred to as the Higashi-Kantō Expressway Mito Route.
The expressway commences at a junction with the Shuto Expressway Bayshore Route in western Chiba Prefecture and follows an easterly course which parallels Tokyo Bay. Just before Miyanogi Junction where the expressway meets the Keiyō Road, the route branches away from the bay and heads inland in a northeasterly direction. It continues through Chiba Prefecture, though the city of Narita, and crossing the Tone River into Ibaraki Prefecture where the expressway reaches its current terminus in Itako.
The expressway is an important route linking the greater Tokyo area with Narita International Airport. At Narita Junction travellers must switch to the Shin-Kūkō Expressway to travel the remaining distance to the airport proper.
Currently the expressway extends from Wangan-Ichikawa Interchange to Itako Interchange, however plans are underway to extend the expressway to a junction with the Kita-Kantō Expressway near Mito, Ibaraki.
The expressway is 6 lanes from the origin to Narita Junction, and the remainder is 4 lanes. The speed limit is 80 km/h (50 mph) from the origin to Chiba-kita Interchange, 110 km/h (68 mph) from Yotsukaidō Interchange to Narita Interchange, and other sections are 100 km/h (62 mph).

## List of interchanges and features

* IC - interchange, JCT - junction, PA - parking area, SA - service area, BR - bridge, TB - toll gate
| No. | Name | Connections | Dist. from Origin | Dist. from Terminus | Notes | Location | Location |
| Through to Shuto Expressway Bayshore Route ||||||||
| | Ichikawa JCT | | 0.0 km 0 mi | 123.0 km 76.4 mi | | Ichikawa | Chiba |
| 1 | Kōya JCT | Tokyo Gaikan Expressway | 0.0 km 0 mi | 123.0 km 76.4 mi | | Ichikawa | Chiba |
| 2 | Wangan-Ichikawa IC | National Route 357 | 1.0 km 0.62 mi | 122.0 km 75.8 mi | Ichikawa-bound exit, Itako-bound entrance only | Ichikawa | Chiba |
| 2-1 | Yatsu-Funabashi IC | National Route 357 Pref. Route 15 (Chiba Funabashi-Kaihin Route) | 5.5 km 3.4 mi | 117.5 km 73.0 mi | Itako-bound exit, Ichikawa-bound entrance only | Funabashi | Chiba |
| 3 | Wangan-Narashino IC | National Route 357 | 7.9 km 4.9 mi | 115.10 km 71.52 mi | Itako-bound exit, Ichikawa-bound entrance only | Narashino | Chiba |
| TB | Narashino Toll Gate | | ↓ | ↑ | | Narashino | Chiba |
| PA | Wangan-Makuhari PA | | 8.7 km 5.4 mi | 114.3 km 71.0 mi | | Mihama-ku, Chiba | Chiba |
| 4 | Wangan-Chiba IC | National Route 357 | 11.6 km 7.2 mi | 111.4 km 69.2 mi | Ichikawa-bound exit, Itako-bound entrance only | Mihama-ku, Chiba | Chiba |
| 5 | Miyanogi JCT | Keiyō Road | 16.7 km 10.4 mi | 106.3 km 66.1 mi | No access: Keiyō southbound → Higashi-Kantō westbound Higashi-Kantō eastbound → Keiyō northbound | Inage-ku, Chiba | Chiba |
| 6 | Chiba-kita IC | National Route 16 | 18.8 km 11.7 mi | 104.20 km 64.75 mi | | Inage-ku, Chiba | Chiba |
| 7 | Yotsukaidō IC | Pref. Route 64 (Chiba Usui Inzai Route) | 24.6 km 15.3 mi | 98.4 km 61.1 mi | | Yotsukaidō | Chiba |
| 8 | Sakura IC | National Route 51 | 30.0 km 18.6 mi | 93.0 km 57.8 mi | | Sakura | Chiba |
| PA | Shisui PA | | 35.1 km 21.8 mi | 87.90 km 54.62 mi | | Shisui | Chiba |
| <8-1> | Shisui IC | National Route 51 / National Route 296 / National Route 409 | 37.0 km 23.0 mi | 86.0 km 53.4 mi | | Shisui | Chiba |
| 9 | Tomisato IC | National Route 409 | 39.5 km 24.5 mi | 83.5 km 51.9 mi | | Tomisato | Chiba |
| 10 | Narita IC/JCT | Shin-Kūkō Expressway National Route 295 – Narita International Airport | 44.9 km 27.9 mi | 78.1 km 48.5 mi | | Narita | Chiba |
| <10-1> | Taiei JCT | Ken-Ō Expressway | 51.5 km 32.0 mi | 71.5 km 44.4 mi | | Narita | Chiba |
| PA | Taiei PA | | 51.6 km 32.1 mi | 71.4 km 44.4 mi | | Narita | Chiba |
| 11 | Taiei IC | National Route 51 | 56.6 km 35.2 mi | 66.4 km 41.3 mi | | Narita | Chiba |
| 12 | Sawara Katori IC | Pref. Route 55 (Sawara Yamada Route) Pref. Route 253 (Katori Tsunomiya Route) | 65.9 km 40.9 mi | 57.1 km 35.5 mi | | Katori | Chiba |
| PA | Sawara PA | | 68.5 km 42.6 mi | 54.5 km 33.9 mi | | Katori | Chiba |
| BR | Tonegawa Bridge | | ↓ | ↑ | Length - 630 m | Katori | Chiba |
| BR | Hitachi-Tonegawa Bridge | | ↓ | ↑ | | Itako | Ibaraki |
| 13 | Itako IC | Pref. Route 50 (Mito Kamisu Route) Pref. Route 101 (Itako Sawara Route) | 74.5 km 46.3 mi | 48.5 km 30.1 mi | | Itako | Ibaraki |
| <14> | Asō IC | Pref. Route 50 (Mito Kamisu Route) | 85.6 km 53.2 mi | 37.4 km 23.2 mi | Planned | Namegata | Ibaraki |
| <15> | Kitaura IC | National Route 354 | 97.5 km 60.6 mi | 23.5 km 14.6 mi | Planned | Namegata | Ibaraki |
| 16 | Hokota IC | Pref. Route 18 (Ibaraki Kashima Route) | 105.4 km 65.5 mi | 17.6 km 10.9 mi | | Hokota | Ibaraki |
| 17 | Ibaraki-minami IC | Pref. Route 18 (Ibaraki Kashima Route) | 114.2 km 71.0 mi | 8.8 km 5.5 mi | | Ibaraki | Ibaraki |
| 15-1 | Ibaraki JCT | Kita-Kantō Expressway | 123.0 km 76.4 mi | 0.00 km 0 mi | | Ibaraki | Ibaraki |