In the entire territory of the Republic of Croatia , Lika Senj County (hereinafter: LSC) has an extremely significant geo - traffic position , and thus has all the prereguisites to take on an important connecting role within the territory of the Republic of Croatia. The county is infrastructurally developed , and using its own natural and human resources, with preserved environment ,and rich natural , historical and cutural heritage , has all the prereguisites for upward economic development , especially after the opening of the A1 motorway passing through LSC. In the last 10 years , the standard and density of the road network has been raised and the county has approached the average density of the road network in the Republic of Croatia, which has a positive effect on the economy of the county itself. The development of road traffic and road connectivity is certainly one of the key elements for the development of the economy in the Republic of Croatia, and thus in Lika - Senj County. Due to the very favorable geo - traffic position , it is necessary to connect the LSC road network even better with the road network of the rest of Croatia , and to improve the existing road network within the county in oder to gain even greater importance within the Republic of Croatia and abroad. Keywords: Lika - Senj County ,geo- traffic position , A1 motorway economic development.