Part of its route traverses the Hangzhou Bay Bridge.

It begins at its southern end in Gaoqiao, Yinzhou District, Ningbo, at an interchange with the G15 Shenyang–Haikou Expressway and the G1504 Ningbo Ring Expressway.

At this interchange, the extra, non-orbital section of expressway to Shanghai branches off to the north while the orbital continues to the south and crosses the bay using the Hangzhou Bay Bridge.

This section, including the Hangzhou Bay Bridge, is concurrent with the G15 Shenyang–Haikou Expressway.

It continues south in a concurrency with G15 Shenyang-Haikou Expressway and G1504 Ningbo Ring Expressway for a short section in Yinzhou District before returning to its southern terminus.