South Dundas Public Works is responsible for the maintenance of over 300km of roads and sidewalks, as well as a number of bridges, railway crossings and overpasses. Not all roads within South Dundas are maintained by the Municipality, however, as County roads such as County Rd. 31, County Rd. 2 and County Rd. 4 are maintained by the United Counties of Stormont, Dundas and Glengarry.