 Most of the roadway has two lanes in each direction (three lanes from Ōizumi Junction to Wakō-kita Interchange).The eastern section from Misato to Ichikawa was opened to the public on the 2nd June, 2018, three years after schedule.The western section from Izumi to the Chuo expressway is under construction, while the final section linking to the Tomei expressway is still at the planning stage.