Construction of an access tunnel to begin in Kaitaa

Construction of the Kaitaa access tunnel will begin in December. Work will be started with earthwork. The open excavation phase is scheduled to take place in February–March 2015. Blasting for open excavation will be announced by a series of short signals before the blast and a long signal afterwards.

It is estimated that the actual excavation of the access tunnel will begin in April 2015. The excavation work for the access tunnel will continue until October 2015.

After the access tunnel project, a metro tunnel and metro station site will be excavated. During both work phases, excavated rock will be taken to Länsiväylä and further afield for use in other construction projects. Haulage will be based on the blasting times. Blasting will occur 1–3 times a day.

Working hours at the site, as determined by the Espoo Environment Department, are as follows:

Earthwork and excavation work
• Mon–Fri 7–18 (quiet work also between 18–22, Sat 9–18)
Tunnel excavation (grout hole drilling, drilling, scaling)
• Mon–Fri 7–18 (quiet work also between 18–7)
Blasting in tunnel
• Mon–Fri 7–22 and Sat 9–18
Loading of excavated rock and transportation
• Mon–Fri 7–22 and weekends 9–22
If no disturbance is caused to residents, also: Mon–Fri 22–7 and weekends

We apologise for any disturbance caused by the work.

More information:
Worksite hotline Destia Oy, tel. +358 40 637 5377
Site Manager Mari Borén, Destia Oy, mari.boren(at)
Länsimetro feedback phone number (Mon-Fri 9 a.m.-3 p.m.) +358 50 377 3700