| U3 | |
| Type: | Rapid transit |
| System: | Hamburg U-Bahn |
| Stations: | 25 |
| Open: | 1912 |
| Operator: | Hamburger Hochbahn |
| Linelength Km: | 20.68 |
| Map State: | collapsed |
The U3 is a line of the Hamburg U-Bahn. The ring line with a length of 20.68km (12.85miles) serves 25 stations. The first part opened in 1912. The line starts in Wandsbek-Gartenstadt and leads via Barmbek into the ring passing through the city centre and back to Barmbek.[1] [2] [3]
The ring line was built from 1906 to 1912 and had a length of and with 23 stations. The first part of the line which was first opened in February 1912, was the part between Rathaus via Hauptbahnhof and to Barmbek. On 2 January 1967 the first part of the line to Billstedt opened with the section leading to Horner Rennbahn. Since then, the U3 line was not a ring line anymore until the year of 2009.[3]
In 2009 eastern parts of U2 and U3 lines were swapped behind Berliner Tor. Before that, the U2 line led to Wandsbek-Gartenstadt. Since then, it ends in Mümmelmannsberg, and the U3 became a ring line again with a branch to Wandsbek-Gartenstadt.[4]