D3 is a state road in western parts of

Croatia Croatia, officially the Republic of Croatia, is a country in Central Europe, Central and Southeast Europe, on the coast of the Adriatic Sea. It borders Slovenia to the northwest, Hungary to the northeast, Serbia to the east, Bosnia and Herze ...

connecting

Rijeka Rijeka (; Fiume ( �fjuːme in Italian and in Fiuman dialect, Fiuman Venetian) is the principal seaport and the List of cities and towns in Croatia, third-largest city in Croatia. It is located in Primorje-Gorski Kotar County on Kvarner Ba ...

on the

Adriatic The Adriatic Sea () is a body of water separating the Italian Peninsula from the Balkans, Balkan Peninsula. The Adriatic is the northernmost arm of the Mediterranean Sea, extending from the Strait of Otranto (where it connects to the Ionian Se ...

coast to

Zagreb Zagreb ( ) is the capital (political), capital and List of cities and towns in Croatia#List of cities and towns, largest city of Croatia. It is in the Northern Croatia, north of the country, along the Sava river, at the southern slopes of the ...

Karlovac Karlovac () is a city in central Croatia. In the 2021 census, its population was 49,377. Karlovac is the administrative centre of Karlovac County. The city is located southwest of Zagreb and northeast of Rijeka, and is connected to them via the ...

and

Varaždin Varaždin ( or ; , also known by #Name, alternative names) is a city in Northern Croatia, north-east of Zagreb. The total population is 46,946, with 38,839 in the city settlement itself (2011). The city is best known for its baroque buildings, ...

, as well as to the

Goričan Goričan () is a municipalities of Croatia, municipality in Međimurje County, Croatia. Goričan is the only village belonging to the municipality. Its population in the 2011 census was 2,823. Of the entire population, 2,763 people identified them ...

border crossing to

Hungary Hungary is a landlocked country in Central Europe. Spanning much of the Pannonian Basin, Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the south, Croatia and ...

. Furthermore, the D3 is used as a parallel road to a number of motorways in Croatia – namely the A4 motorway north of

, the A1 motorway between Zagreb and

Bosiljevo 2 interchange The Bosiljevo 2 interchange () is a trumpet interchange southwest of Karlovac, Croatia, near the eponymous village. The interchange is the northern terminus of the A6 motorway and it connects the A6 route to the A1 motorway between Bosilj ...

south of

and finally the A6 motorway between Bosiljevo 2 interchange and

– and it connects to nearly all motorway interchanges on that route either directly or via connecting roads. The road is long. The D3 state road is concurrent along parts of its route with other state roads, most notably the D1 between Zagreb and Karlovac, as well as some sections of the A4 (south of

Popovec Popovec is a village in Croatia. It is connected by the D3 highway. It is formally a settlement (naselje) of Zagreb Zagreb ( ) is the capital (political), capital and List of cities and towns in Croatia#List of cities and towns, largest city ...

interchange) and the A3 (between

Ivanja Reka Ivanja Reka is a neighborhood located in the eastern part of the Peščenica - Žitnjak city district of Zagreb, Croatia. Its main thoroughfare is the Slavonska Avenue. The nearby Ivanja Reka interchange is a major highway interchange of Slavo ...

and

Lučko Lučko is a settlement in the Novi Zagreb - zapad district of the city of Zagreb, located south of the Sava and southwest of the city center. Lučko is located near the Lučko interchange that connects the A1 motorway, the Zagreb bypass and t ...

interchanges) motorways. The A3 and A4 motorway sections that are

concurrent Concurrent means happening at the same time. Concurrency, concurrent, or concurrence may refer to: Law * Concurrence, in jurisprudence, the need to prove both ''actus reus'' and ''mens rea'' * Concurring opinion (also called a "concurrence"), a ...

with the D3 state road are also a part of

Zagreb bypass Zagreb bypass () is a U-shaped motorway partially encircling Zagreb, Croatia. The largest part by far, between Jankomir and Ivanja Reka interchanges, was built between 1977 and 1979, while the Ivanja Reka – Sveta Helena section was built betw ...

and are not tolled. 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 ( enacted by the Parliament of the Republic of Croatia. The tasks of the company are defined by the Public Roads A ...

, a state-owned company.

Traffic volume

Traffic is regularly counted and reported by

, operator of the road.

Road junctions and populated areas

Maps

Sources

{{State roads in Croatia D003 D003 D003 D003 D003 D003 D003 D003 D003 D003