The short answer to that question is approximately 6 years.
However, the history of the project is more complicated than that and actually involves two separate rail trail projects.
Back in 1995, Canadian Pacific Railway (CP Rail) proposed to abandon approximately 23 miles of rail corridor stretching from Albany to Delanson in Schenectady County.
At that time, Albany County took a leadership role in an effort to acquire the corridor for a rail trail and, in fact, secured a $1.8 million Transportation Enhancement grant for acquisition of the property and development of the trail.
Shortly thereafter, CP Rail withdrew its plan to abandon the rail line, which resulted in the unfortunate end of the proposed rail trail project and loss of the grant funding.
Then, in 2003, CP Rail once again proposed an abandonment of this rail line, but this time, it was for a 9-mile portion stretching from Albany to Voorheesville.
Albany County immediately filed a request for Railbanking (see next FAQ), submitted a parks acquisition grant application to the NYS Office of Parks, Recreation & Historic Preservation, and began active negotiations with CP Rail to purchase the rail corridor.