What is now Hudson River Park emerged from the failed 1970s and 1980s Westway proposal to replace the dilapidated West Side Highway with an interstate highway connecting the Brooklyn–Battery Tunnel (I-478), the Holland Tunnel (I-78), and the Lincoln Tunnel (then I-495). The right-of-way of the new six-lane highway would have demolished the then-existing West Side piers and replaced them with of landfill, through which the new highway would have tunneled. In addition to of development, the plan also had provisions for of continuous parkland to be laid on top of the highway, including four waterside parks and a tree-lined promenade and bike path on the waterfront. Around 90% of the funds for the project were to come from federal aid. The project was abandoned on September 19, 1985, due to political as well as environmental objections, particularly concerns in Congress over excessive cost as well as concerns by federal courts over the Hudson River striped bass habitat. Much of the estimated $2 billion in federal funds allocated for the Westway was diverted to mass transit. Plans for the park still persisted, with $265 million of the park's proposed $500 million cost having been secured by 1990. The park would be built on all of the land not occupied by the future West Side Highway, as well as the remaining piers.