National Route 357
国道357号
Tokyo Bay Road
Route 357 near Ichikawa
Route information
Length	70 km[1] (43 mi)
Existed	1975–present
Major junctions
West end	Hakkeijima, Kanagawa (current) Yokosuka (planned)
Major intersections	National Route 14 Higashi-Kantō Expressway National Route 298 Bayshore Route
East end	National Route 16 in Chūō-ku, Chiba
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
← National Route 356 → National Route 358

National Route 357 is a national highway of Japan connecting Chūō-ku, Chiba and Yokosuka in Japan, with a total length of 70 km (43.5 mi). The highway parallels the Bayshore Route.