MapQuest.com, Google.com/Maps and Geology.com are three sites that have Montana state road maps available for viewing online. The Montana government state website, Mdt.Mt.gov, features a road map of Montana state highways.
The maps on MapQuest and Google are interactive, allowing users to zoom in to see the names of minor roads and residential streets as well as highways. The Montana government map, which shows highways, railways and main geographical features, also has a tool that enables viewers to zoom in on sections of the map. The map on Geology.com is fixed and offers an overview of Montana state highways and cities.