I need to collect a centerline file for the entire state of ND and SD. The best public resource I have found is the U.S. Census Tigerline FTP sight but they appear to only publish county level centerline data, not for the entire state. Does anyone know of another online site where a complete state collection of centerline files could be downloaded or at worst how I could download and consolidate all of the shapefiles for each county? There are a lot and I would rather not download them individually, unzip, reproject them and then merge them together.
U.S. Census Tigerline FTP Site: ftp://ftp2.census.gov/geo/tiger/TIGER2014/ADDRFEAT/