Tram routes 2, 3, 4 and 7 will be diverted on the nights of Monday 21 October and Tuesday 22 October 10pm to 5am due to crane work on Unioninkatu. The trams will serve all stops along the diversion routes. On the night of 21 October, another diversion will also be in place for trams 3 and 7 from midnight.
Trams 2 and 3 will run via Eira counter clockwise which meansthey will not serve the stops in the other direction. In addition, tram 3 will run to Hakaniemi and Meilahti via Kruununhaka, i.e. it will not serve the Central Railway Station, Kaisaniemenkatu and Kaisaniemenpuisto. Tram 2 will run to Töölö and Pasila station via Kruununhaka and not serve Aleksanterinkatu.
Tram 4 will run via Kruununhaka in both directions, i.e. the tram will not serve Aleksanterinkatu between Ylioppilastalo and the Senate Square.
Tram 7 will run from the Central Railway Station via Kaisaniemi to Hakaniemeä. The tram will not serve Aleksanterinkatu and Kruununhaka.