BART approved an alignment for its Livermore extension to run along Interstate 580 then tunnel underneath Isabel Avenue to the Livermore ACE station and then continue along the right-of-way to Vasco Road to serve as its final terminal. However, in July 2011, the Livermore City Council reversed its position in response to a petition requesting that the alignment stay within or nearby the Interstate 580 right-of-way, and now favors stations be built at the Interstate 580 interchanges with Isabel Avenue and Greenville Road.[3] The BART extension was later replaced with the Valley Link proposal, again along the I-580 alignment.