Explore details about location 常磐自動車道 (Joban Expressway). 常磐自動車道 (Joban Expressway) is a location situated within the 三郷市 alongside other areas such as 東京外環自動車道 (TOKYO-GAIKAN EXPRESSWAY), 県道越谷流山線 (Koshigaya-Nagareyama-Sen), 県道草加流山線 (Soka-Nagareyama-Sen).