The Huangmaohai Cross-sea Passage starts from Gaolan Port District, Zhuhai City, Guangdong Province, connects to the Hong Kong-Zhuhai-Macao Bridge in the east, connects Xintai Expressway to the west and intersects with the Western Coastal Expressway, and ends at Doushan Town, Taishan City, Jiangmen City. The total length of the route is about 31 kilometers. It adopts the standard of two-way 6-lane expressway, with a design speed of 100 kilometers per hour and a designed service life of 100 years. The approved construction period is 4 years, and it is expected to be completed and opened to traffic in 2024.