D66 is a state road in

Croatia , image_flag = Flag of Croatia.svg , image_coat = Coat of arms of Croatia.svg , anthem = "Lijepa naša domovino"("Our Beautiful Homeland") , image_map = , map_caption = , capit ...

, connecting A9 motorway with D8 state road in

Matulji Matulji ( it, Mattuglie) is a municipality in Primorje-Gorski Kotar County, Croatia. It is located west of the city of Rijeka, north of the town of Opatija, and it borders Slovenia. Municipality There are a total of 11,246 inhabitants in the m ...

. D66 road serves as a connection to a number of towns and resorts along the eastern coast of Istria peninsula, including

Opatija Opatija (; it, Abbazia; german: Sankt Jakobi) is a List of cities and towns in Croatia, town and a municipality in Primorje-Gorski Kotar County in western Croatia. The traditional seaside resort on the Kvarner Gulf is known for its Mediterranean ...

Lovran Lovran ( it, Laurana, german: Lauran) is a village and a municipality in Primorje-Gorski Kotar County, Croatia. It is situated in eastern Istria, on the western coast of the Kvarner Bay with a population of 4,101 in the municipality and 3,336 in th ...

and Ičići, as well as to

Brestova Brestova is a village in Croatia, located south of Učka Mountain ridge. It is connected by the D402 road, which links the Brestova ferry port, from where ferries depart for the island of Cres. The settlement is administered as a part of Istria ...

ferry port, from which

Jadrolinija Jadrolinija is a Croatian sea shipping company. It is a state-owned company and its main mission is connecting Croatian islands to the mainland by operating regular passenger and cargo transport services. The company mainly operates car ferries on ...

ferries fly to island of

Cres Cres (; dlm, Crepsa, vec, Cherso, it, Cherso, la, Crepsa, Greek: Χέρσος, ''Chersos'') is an Adriatic island in Croatia. It is one of the northern islands in the Kvarner Gulf and can be reached via ferry from Rijeka, the island Kr ...

( D100). The northern terminus of the road also provides a link towards Rijeka via D8 state road and to Matulji interchange on A8 motorway. The road is 90.1 km long. The road, as well as all other state roads in Croatia, is managed and maintained by

Hrvatske ceste Hrvatske ceste (lit. ''Croatian roads'') is a Croatian state-owned company pursuant to provisions of the Croatian Public Roads Act ( hr, Zakon o javnim cestama enacted by the Parliament of the Republic of Croatia. The tasks of the company are def ...

, a state-owned company.

Traffic volume

Traffic is regularly counted and reported by

, operator of the road. Substantial variations between annual (

AADT Annual average daily traffic, abbreviated AADT, is a measure used primarily in transportation planning, transportation engineering and retail location selection. Traditionally, it is the total volume of vehicle traffic of a highway or road for a ...

) and summer (ASDT) traffic volumes are attributed to the fact that the road connects a number of summer resorts to Croatian motorway network.

Road junctions and populated areas

Sources

{{State roads in Croatia D066 D066 D066