User blog comment:Martolives/Mass Relays/@comment-1341687-20120406011129

It becomes a matter of resources and time. Everyone (especially the asari) outside of Sol have a decent chance of reconnecting and restarting in a fair amount of time. If we think about the resources and time and scope of a dark matter engine like the Crucible, it is feasible that reconnection of the species home worlds could happen in a matter of years. We already know how the relays work. It just becomes a matter of being able to aim any newly built ones because of debris, stellar drift and pure random chance that could make a first jump catastrophic. But if they can pull it off, I don't see any reason why a framework couldn't be finished with 50 years. But by then it will have been too late for pretty much everyone except for certain krogan in the Sol system.