The construction work covers the excavation of two 1.8 km metro tunnels, the end of the work tunnel, as well as a station and two shafts. In addition, the work includes open excavation on top of the future metro station, next to Iso Omena shopping centre. All work will be carried out inside the fenced areas. The construction work is being carried out by Swedish contractor STRABAG Sverige AB.
Matinkylä worksite
Address: Suomenlahdentie 7
On-duty worksite phone 050 520 3423
Olof Korvi, Site Manager, tel. 050 379 1807
Working hours at Otaniemi
Earth excavation and removal 7 a.m.-6 p.m. (Mon-Fri)
Open excavation 7 a.m.-6 p.m. (Mon-Fri)
Boring from 7 a.m.-6 p.m.; possibly until 10 p.m., at night time and at weekends if noise level measurements show that guideline values are not exceeded
Blasting in tunnel 7 a.m.-10 p.m. (Mon-Fri)
Blasted rock loading and transport 24 h (Mon-Sun). Blasted rock will be hauled to Jätkäsaari.
Noise levels
Noise level means an average A-weighted sound pressure level (LAeq) during working hours.
- Night-time (weekdays plus weekend) < 30 dB (LAeq)
- Weekdays 6 p.m.-10 p.m. < 40 dB (LAeq)
- Weekends and mid-week holidays 7 a.m.-10 p.m. < 35 dB (LAeq)
Preliminary timetable
The Matinkylä excavations will last around two years until November 2013.
West metro construction work begins in Matinkylä (pdf-file)
