List of gaps in Interstate Highways

Dwight D. Eisenhower National System of Interstate and Defense Highways Highway shields for Interstate 69 and Interstate 70, highways with true gaps and freeway gapsInterstate Highways in the 48 contiguous statesSystem informationFormedJune 29, 1956Highway namesInterstatesInterstate X (I-X)System links Interstate Highway System Main Auxiliary Suffixed Business Future I-70 briefly following an at-grade portion of US 30 with traffic lights in Breezewood, Pennsylvania There are gaps in the Interstate Highway System where the roadway carrying an Interstate shield does not conform to the standards set by the Federal Highway Administration (FHWA), the body that sets the regulations for the Interstate Highway System. For the most part, the Interstate Highway System in the United States is a connected system, with most freeways completed; however, some Interstates still have gaps. These gaps can be due to unconnected segments of the same route or from failure of the road to fully conform to Interstate standards by including such characteristics as at-grade crossings, traffic lights, undivided or narrow freeways, or movable bridges (lift bridges and drawbridges). True gaps True gaps are whe