The title pretty much says it all--is building railroads worth it, and how do you optimize them? By the time the tech rolls around--usually an RA "gift" as I never tech for it (should I?)--I've disbanded most of my workers to save the high late-era maintenance costs and have a continent pretty much to myself. I do build RRs but it's usually 1 E-W and 1 N-S route, one at least going through the capital, for quicker unit movement. Does the RR production bonus make it worth redoing your entire road network, and linking up minor cities?