Tunnelgatan was named after the Brunkeberg tunnel which opened in 1886. The previous name was Barnhus trädgårdsgata (Orphanage garden street), after the orphanage at Railway Square. During the 17th century, there was a rope course at the place. The only remaining residential building in the street is located at the crossing of Tunnelgatan and Luntmakargatan and was built between 1894-96.
Tunnelgatan is also associated with the murder of Olof Palme, which occurred at the tunnel mouth on Sveavägen street, and the killer fled up the stairs. A section of the street has since been renamed as Olof Palme Street.
The City Plan 67 intended to expand Tunnelgatan to a six-lane urban highway with continuation through David Bagares street to Stureplan, and further through Humlegårds street to Norra Djurgården. In the west, a connection to Klarastrandsleden via a bridge over the tracks north of Stockholm Central Station was planned. However the plans were shelved indefinitely when the 1977 City Plan were formulated.
- City 67: Stockholm: principplan för den fortsatta citysaneringen framlagd i maj 1967 (in Swedish). [Stockholm]: [Nord. bokh. (distr.)]. 1967. LIBRIS 479017.
- Westlund Börje, Stahre Nils-Gustaf, ed. (1986). Stockholms gatunamn: innerstaden (in Swedish) (1. uppl. ed.). Stockholm: Liber/Allmänna förl. ISBN 91-38-90777-1. LIBRIS 7269073.
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