I still have some of my old topo maps and yes, topography doesn't change but roads, trails and other featues do. Driving several miles to find out the access road you were going to take is now overgrown and abandoned can be a real bummer. Downloading current maps onto a device (gps,phone,tablet etc) can save a lot of time and frustration plus provides some additional safety. The national forest where I live is divided up into districts and each district has their own map with current info plus elevation contour lines. You can puchase the paper version or download the exact same map in pdf form at about the same cost through the Avenza App. Avenza also has topo maps that can be downloaded, many of which are free.