The Inner Circular Route (, signed as Route C1, is one of the routes of the Toshin Kanj?-sen)Shuto Expressway system serving the central part of the Greater Tokyo Area. The route is a complete loop around the central Tokyo wards of Chiyoda, Ch, and Minato, with a total length of 14.3 km (8.9 mi). In addition to serving areas of central Tokyo, the Inner Circular Route is also serves the origin of the Shuto Expressway radial routes. Part of the expressway is built above the Shibuya River.
The expressway was built between 1962 and 1967, partly in preparation for the 1964 Summer Olympics. In 2009, Tokyo private industries proposed funding a project to dismantle the elevated expressway and put them underground. On 16 November 2017, the voice actress Hiromi Tsuru noted for her role as Bulma in the Japanese animated series Dragon Ball, died from aortic dissection while driving on the Inner Circular Route.
List of interchanges and exits ordered following the outer loop (clockwise) beginning just past Edobashi Junction.
|Ch-ku||Takaracho||Yaesu-dori, Hatchobori 2 crossing||Outer loop exit/inner loop entrance|
|Ch-ku||Kyobashi JCT||Tokyo Expressway to Higashi-ginza exit and Shimbashi||access from outer loop only|
|Ch-ku||Kyobashi||Inner loop exit/outer loop entrance|
|Ch-ku||Shiodome JCT||Tokyo Expressway and Yaesu Route to Kita-ikebukuro||access from inner loop only|
|Ch-ku||Shiodome||inner loop exit/outer loop entrance|
|Minato-ku||Hamasakibashi JCT||Route 1 to Haneda and Bayshore Route|
|Minato-ku||Ichinohashi JCT||Route 2 to Meguro and Keihin #2 Road|
|Minato-ku||Iikura||Gaien-higashi-dori, Roppongi||outer loop exit/inner loop entrance|
|Minato-ku||Tanimachi JCT||Route 3 to Shibuya and Tomei Expressway|
|Chiyoda-ku||Kasumigaseki||Diet Building, Japanese Government offices|
|Chiyoda-ku||Miyakezaka JCT||Route 4 to Shinjuku and Ch Expressway|
|Chiyoda-ku||Daikancho||British Embassy in Tokyo, Chidorigafuchi Park||outer loop exit/inner loop entrance|
|Chiyoda-ku||Kita-no-maru||Kitanomaru Park, Nippon Budokan||inner loop exit/outer loop entrance|
|Chiyoda-ku||Takebashi JCT||Route 5 to Kita-Ikebukuro, Omiya, and Kan-Etsu Expressway|
|Chiyoda-ku||Kandabashi JCT||Yaesu Route to Marunouchi and Haneda||access from outer loop only|
|Ch-ku||Gofukubashi||inner loop exit/outer loop entrance|
|Ch-ku||Edobashi||outer loop exit/inner loop entrance|
|Ch-ku||Edobashi JCT||Route 1 to Ueno
Route 6 to Hakozaki JCT, and Bayshore Route via Route 9
|Route 1 to Ueno can be access from inner loop only.|