The studies for Werkmaatschappij Almere-Amsterdam look at a possible rail connection between Amsterdam-South and Almere-South Centre.

The route proposed by Movares includes an arched bridge over the lake. Its proposals are costed at US$3bn to US$3.4bn, depending on the option chosen.

Jacobs/APPM/Posad has opted for a design that includes four bridges touching down on islands in the lake. Its railway is costed at US$3.5bn.

Mott MacDonald and Baca Architects propose a US$4.3bn route that involves 9km of tunnels, including the crossing of the lake.