In this isthmus, along the course of the Yodo-gawa River into which the Katsura-gawa River (Yodo-gawa River system) and the Kizu-gawa River (Kyoto Prefecture) merge, JR Kyoto Line (Tokaido Main Line), Tokaido Shinkansen (bullet train), Hankyu Kyoto Main Line and National Route 171 (Old Saigoku Kaido Road) are on the right bank, and Keihan Main Line and Old National Route 1 (now Kyoto Moriguchi Line of Kyoto and Osaka Prefectural Road 13 and Old Kyokaido Road) are on the left.
この地峡には、桂川(淀川水系)・淀川・木津川(京都府)が合流して淀川となる川の流れに沿って、右岸にJR京都線（東海道本線）、東海道新幹線、阪急京都本線、国道171号（旧西国街道）が、左岸に京阪本線、旧国道1号（現・京都府道・大阪府道13号京都守口線、旧京街道）がある。