Shanghai Metro Line 4

Infobox rail line
name = Line 4 (四号线)

---

image_width =
caption = A view of the Yangshupu Road station.
type = Rapid transit
system =
status =
locale = Shanghai, China
start = No terminals; ring line, Yishan Road serves as terminal for trains returning to depot
end =
stations = 26
routes =
ridership =
open = December 31, 2005
close =
owner =
operator = Shanghai Metro Operation Co. Ltd.
character = Underground and elevated
stock =
linelength = convert|33.7|km|mi|2|abbr=on|lk=on
tracklength =
notrack = 2
gauge = RailGauge|sg
el = Overhead lines (1500 volts)
speed = convert|80|km/h|mph|0|abbr=on|lk=on
elevation =

Shanghai Metro/Line 4

Shanghai Metro Line 4 is a loop line in the city of Shanghai. It follows the Inner Ring Road for most of the route, extending into Pudong across the Huangpu River. It shares the route from Baoshan Road to Hongqiao Road with the current Line 3.

Although this is a ring line, trains returning to the depot uses Yishan Road as a terminal to let all passengers disembark.

The first segment of the line between Damuqiao Road and Lancun Road (running in a "C"-shape) opened on December 31, 2005. The remainder of the line opened on December 29, 2007.

Construction problems

During construction of Line 4, part of the tunnel that was under construction close to the Huangpu river collapsed on July 1, 2003. This caused a six-storey building to collapse, and several other buildings in the neighborhood had to be evacuated. No casualties were reported, but the incident caused the completion of the metro line to be delayed for almost a year. Construction has been completed, and the section from Damuqiao Road to Lancun Road opened for operation December 29, 2007.

Major stations

*Shanghai Railway Station: Interchange with Line 3. To transfer to Line 1, passengers need to exit through a tunnel and purchase a ticket to enter the station.
*Zhongshan Park: Interchange with Line 2 and Line 3.
*Century Avenue: Interchange with Line 2; will be a 4-line interchange station in the future.
*Lancun Road: Interchange with Line 2.
*Shanghai Stadium: Serves Shanghai Stadium.
* Shanghai Indoor Stadium: Serves the sports stadium of the same name and the biggest regional and interregional bus station in the city. Interchange with Line 1.