A2 City Ring, Lucerne

The work for the total restoration of the Lucerne City Ring is being carried out in 5 sub-phases. The tunnel pipes of the almost 600-metre long Reussport tunnel are being restored between 2010 and 2013. The Senti bridges, which have cracked concrete and corrosion on the abutments as a result of leaking road crossings, are also being restored and noise insulation walls installed. The city connection and the Sonnenberg tunnel are also undergoing restoration.

The work for the total restoration of the Lucerne City Ring is being carried out in 5 sub-phases. The tunnel pipes of the almost 600-metre long Reussport tunnel are being restored between 2010 and 2013. The Senti bridges, which have cracked concrete and corrosion on the abutments as a result of leaking road crossings, are also being restored and noise insulation walls installed. The city connection and the Sonnenberg tunnel are also undergoing restoration.

Construction methods for the Reussport tunnel:

  • Restoration of the damaged concrete structure
  • Replacement of the road surface
  • Construction of new SOS niches
  • Restoration of the calcified tunnel drainage lines
  • Adaptation of the cable pipe systems and safety mechanisms to currently available technology
  • Extension of the north portal by a good 130 metres to improve noise insulation

Construction methods renovation of Senti bridges:

  • Replacement of the overstressed and damaged bridge bearings
  • Replacement of any broken sealing and drainage leaks
  • Replacement of the worn-out road surfaces
  • Construction of an anti-recirculation wall

Construction methods city connection:

  • Renovation of the reinforced steel construction of the city connection, apply surface protection
  • Replace railings and guide rails
  • Replace existing road crossings
  • New sealing for the Geissmatt entrance
  • Trim off surface covers, integrate new binder and cover laye
  • Replace corrosion protection of the steel constructions
  • Install pigeon protection

Map

Additional Services

Unique features: Work will be performed on the tunnel at night and on various weekends so that daytime traffic flow can be maintained during the complete overhaul. The construction sites will be set up every day and cleared again in the early morning to ensure the safe passage of traffic. Space is extremely limited for work and material transport and must be planned precisely. Shift planning for the construction site personnel is also a major challenge for those responsible.

 

Specific figures

Organisation

Project implementation: joint venture

Construction schedule

March 2010 - 2013

Contract value

CHF 216 million