Highways in Bulgaria are dual carriageways, grade separated with controlled-access, designed for high speeds. In 2012, legislation amendments defined two types of highways: motorways and expressways. The main differences are that motorways have emergency lanes and the maximum allowed speed limit is 140 km/h (87 mph), while expressways do not and the speed limit is 120 km/h (75 mph). As of October 2023, a total of 879,1 kilometers of motorways are in service.

The Struma Motorway is a motorway currently under construction in Bulgaria. The motorway is located in the Yugozapaden area in South West Bulgaria, and follows the route Sofia-Pernik-Dupnitsa-Blagoevgrad-Sandanski to Kulata on the border with in Greece. It is part of the Pan-European Corridor IV and also is part of Е79, that runs from Miskolc (Hungary) to Thessaloniki (Greece), via the Romanian cities of Deva and Craiova. This project is under the European Union's Ten-T Priority Projects. The road is also part of the proposed Via Carpatia route.