Buildings and infrastructure in Switzerland will require annual investment of SFr65 billion ($69 billion) over the next 20 years, according to a comprehensive study.
Some SFr30 billion per annum is currently spent on maintenance alone, the Swiss National Science Foundation study revealed.
Two-thirds of the maintenance bill is taken up by technical infrastructure, including transport and communications, with the remainder spent on residential buildings.
Researchers warn that there is a risk of a funding shortfall in road and rail transport if work continues as planned.
Last month the cabinet announced its intention to raise motorway access fees and increase the fuel tax to ensure the financing of Swiss road transport infrastructure.
It also proposed a gradual and targeted price hike for public rail transport to fund the maintenance and upgrading of the rail network.
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