Road Infrastructure Agency - Sofia
Regional Road Offices – Bourgas, Kurdjaly, Smoljan, Haskovo, Yambol
‘Road Maintenance Equipment’ – Sofia
‘Injstroi’ – Sofia
‘Vialuks’ – Sofia
‘PSI’ – Stara Zagora
‘Trais Group’ – Sofia
‘AB’ – Haskovo
‘Detelina’ – Haskovo
‘Patishta’ – Plovdiv
‘Technostroi Engineering 99’ – Yambol
‘Mostengineering’ – Yambol
‘Road Building’ – Plovdiv
‘Road Maintenance’ – Kurdjaly
‘Road Maintenance’ – Krumovgrad
‘Road Maintenance’ – Smolyan
‘Viastroiengineering’ – Smolyan
‘Rodopa Trais’ – Smolyan
‘ICA’ – Smolyan
‘Bourgas putstroi’- Bourgas
‘Micro ASU’ – Plovdiv
"Binder" - Sliven

"Public works construction" - Bourgas

Sofia Municipality; Blagoevgrad Municipality; Haskovo Municipality; Kurdjaly Municipality; Yambol Municipality; Ardino Municipality; Asenovgrad Municipality; Banite Municipality; Devin Municipality; Elhovo Municipality; Momchilgrad Municipality; Ihtiman Municipality; Krumovgrad Municipality; Madan Municipality; Nedelino Municipality; Plovdiv Municipality; Simeonovgrad Municipality; Sozopol Municipality; Smolyan Municipality; Tzarevo Municipality; Chepelare Municipality; Zlatograd Municipality.