The Changshu–Taizhou Expressway (Chinese: 常熟—台州高速公路; pinyin: Chángshú–Tāizhōu Gāosù Gōnglù), commonly referred to as the Changtai Expressway (Chinese: 常台高速公路; pinyin: Chángtāi Gāosù Gōnglù), is an expressway that connects the cities of Changshu, a satellite city of Suzhou, in the province of Jiangsu, China, and Taizhou, in the province of Zhejiang. When fully complete, it will be 339 km (211 mi) in length. The expressway is a spur of the G15 Shenyang–Haikou Expressway.