I'm taking a break from BF but I thought this was important enough to share. Yesterday the Supreme Court released its ruling in Brandt v. US. In it the court found that railway easements granted under the General Railroad Right-of-Way Act of 1875 were terminated when the railway was abandoned. This means that abandoned railway easements granted under the 1875 Act won't be available for rails to trails without just compensation to the landowners.
The decision is here.