The Doing Business section has information for contractors, vendors, and commercial vehicle operators. This site is unbelievably persistent in its attempt to place a cookie on your computer. It has stories about the department, maps, and traffic cams for Louisville. The site does provide information on road closures and weather, but it appears designed more for businesses than the public. There is plenty of technical information, as well as information on construction letting.
Maps require plug-ins.
This is available in a graphics heavy or text only version. A lot of information is presented, both about the department itself and planned projects. A special section is designed just for contractors. The Department heads an alphabet soup of transportation sub-administrations, which link from this page. The site seems to be designed for businesses, rather than the traveling public.