Aside from it becoming "someone else's problem", are there any safety concerns with abandoning a tensioned soil tieback after your SOE is complete? OSHA safety and general worker safety comes to mind - you can't always control what the contractor does on site and all it takes is for one stupid...
In the Arema Manual for Railway Engineering commentary, it states that "The lateral deflection limits recommended are 50% of the FRA allowable limits for alignment deviation for Class 5 Track. Therefore, at least 50% of the allowable limit remains to account for variations in track alignment...