Harvard has purchased tracts of land in Allston, a walk across the Charles River from Cambridge, with the intent of major expansion southward. The university now owns approximately fifty percent more land in Allston than in Cambridge. Proposals to connect the Cambridge campus with the new Allston campus include new and enlarged bridges, a shuttle service and/or a tram. Plans also call for sinking part of Storrow Drive (at Harvard's expense) for replacement with park land and pedestrian access to the Charles River, as well as the construction of bike paths, and buildings throughout the Allston campus. The institution asserts that such expansion will benefit not only the school, but surrounding community, pointing to such features as the enhanced transit infrastructure, possible shuttles open to the public, and park space which will also be publicly accessible.