Melbourne's City Square will become a construction site for several years and up to 900 trees around the inner city will go when the Melbourne Metro rail tunnel is built.

South Yarra residents will also lose a local park and can expect to see a huge spike in truck movements during construction, even though they will not gain a new station after the tunnel is built.

The Environment Effects Statement for the Melbourne Metro project will be released for public feedback on Wednesday, and will detail the impact the nine-kilometre rail tunnel will have on inner Melbourne, both permanently and while it is being built.

Those effects, including a host of road closures and curbs on traffic flow, will begin to be felt from next year when early works on the $10.9 billion project begin.