Urban railway line the city's longest and also most expensive.
Ho Chi Minh City’s Metro Line No. 4, connecting Nguyen Van Linh Street in Nha Be district and District 7 with Ben Cat in Go Vap district, is the city’s longest and will need the largest investment, of VND97 trillion (nearly $4.5 billion).
The line will run for 35.7 km, with 13.1 km underground, 730 meters at street level, and 18.2 km elevated, from Nha Be and District 7 through District 4, District 1, Phu Nhuan district, and District 12 to Go Vap district, with a 3.4 km long underground spur line (called 4b) connecting Go Vap, Tan Binh and Phu Nhuan districts.
In order to meet maintenance requirements and the repair of locomotives and carriages, the project management board plans to build two depots. The Thanh Xuan depot will be located in District 12 on an area of 24.5 hectares while the Hiep Phuoc depot will be in Nha Be district on 21.2 hectares.
According to the city’s plans it is to develop eight metro lines and three monorail and tram lines. Only Metro Line No. 1 (construction of which is underway), Line No. 2, and Line No. 5 have already received sufficient funds for construction.