[1] The viaduct was constructed by Konstruktor, Split, as the main contractor, and Viadukt and Hidroelektra of Zagreb as subcontractors in 2000 and 2001.

[3] Cost of the construction works related to the Drežnik Viaduct was 250 million Croatian kuna.

[2] The Drežnik Viaduct is the largest and the most significant structure on the Karlovac - Bosiljevo 1 section of the A1 motorway, which carries the transit traffic between Zagreb in the north and Rijeka and Split in the south, and channels it away from the Karlovac city centre, dramatically reducing travel times between those cities and relieving traffic congestion from the D1 state road running through Karlovac, which was especially severe during summer seasons.

[7] Substantial variations between annual (AADT) and summer (ASDT) traffic volumes are attributed to the fact that the bridge carries substantial tourist traffic to the Adriatic resorts.

The traffic count is performed using analysis of motorway toll ticket sales.