| Country: | HRV |
| Type: | D |
| Route: | 56 |
| Length Km: | 122.5 |
| Length Round: | 1 |
| Terminus A: | D424 in Tromilja interchange |
| Junction: | D27 in Benkovac D33 in Lozovac and in Drniš |
| Terminus B: | D1 in Klis-Grlo interchange |
| Counties: | Zadar, Šibenik-Knin, Split-Dalmatia |
| Cities: | Benkovac, Skradin |
D56 runs parallel to a segment of A1 motorway between Zadar and Split areas. Furthermore the road has junctions to major state roads, namely D27 in Benkovac, connecting to D1 state road in Gračac, serving as a possible bypass of both Maslenica bridges, D424, D59 and D33 state roads. The road also connects to A1 motorway Skradin and Zadar 2 interchanges via D424 and a short connector road, respectively.[1] The road is 122.5km (76.1miles) long.[2]
The D56 road also serves as a connection to Krka National Park.
The road, as well as all other state roads in Croatia, is managed and maintained by Hrvatske ceste, a state-owned company.[3]
Traffic is regularly counted and reported by Hrvatske ceste, operator of the road.[4] Substantial variations between annual (AADT) and summer (ASDT) traffic volumes are attributed to the fact that the road serves as a connection to A1 motorway and it carries substantial tourist traffic.
| D56 traffic volume | |||||||||
| align=center bgcolor=00c0f0 | Road | align=center bgcolor=00c0f0 | Counting site | align=center bgcolor=00c0f0 | AADT | align=center bgcolor=00c0f0 | ASDT | align=center bgcolor=00c0f0 | Notes |
| D56 | 4916 Raštević | align=center | 3,109 | align=center | 3,493 | Adjacent to Ž6003 junction. | |||
| D56 | 5318 Lišane Oštrovičke | align=center | 742 | align=center | 1,200 | Between L63177 and L63147 junctions. | |||
| D56 | 5306 Skradin | align=center | 1,930 | align=center | 3,058 | Adjacent to Ž6090 junction. | |||
| D56 | 5413 Kljake | align=center | 1,362 | align=center | 1,568 | Between Ž6098 and Ž6099 junctions. | |||
| D56 | 5503 Progon - south | align=center | 2,732 | align=center | 3,267 | Between D219 and Ž6116 junctions. |