D304 is a state road connecting Kastav

Kastav

Kastav is a historical town located about 10 km northwest of Rijeka and about 5 km northeast of Opatija in Primorje-Gorski Kotar County in Croatia.-Demographics:The total population of Kastav is 10,472 ....

 and parts of Rijeka

Rijeka

Rijeka is the principal seaport and the third largest city in Croatia . It is located on Kvarner Bay, an inlet of the Adriatic Sea and has a population of 128,735 inhabitants...

 with A7

A7 (Croatia)

The A7 motorway is a long motorway in Croatia. It connects the nation's largest port in Rijeka, to the Croatian motorway network, as well as to the Rupa and Pasjak border crossings to Slovenia. The motorway forms part of a longitudinal transportation corridor in Croatia, and it is a part of...

 motorway in Diračje

Diračje

Diračje is a location in Rijeka, Croatia. It is not registered as a standalone settlement by the Croatian Bureau of Statistics. The Rijeka bypass has an interchange near Diračje....

 interchange and terminating at D8

D8 (Croatia)

D8 state road comprises Croatian section of Adriatic Highway, and it runs from Pasjak border crossing to Slovenia via Rijeka, Senj, Zadar, Šibenik, Split, Opuzen and Dubrovnik to the border with Montenegro at Karasovići. Most of the D8 state road is still a two-lane road, excepting rare four-lane...

 state road in Rijeka. The road is 7.1 km long.

D304 is fully incorporated in Rijeka and Kastav urban transportation systems.

The road, as well as all other state roads in Croatia, is managed and maintained by Hrvatske ceste

Hrvatske ceste

Hrvatske ceste is a Croatian state-owned company pursuant to provisions of the Croatian Public Roads Act , the county and local roads are managed by county authorities, while the motorways are managed by Croatian Motorways Ltd and other concessionaires.The company is currently administered by a...

, state owned company.

Road junctions and populated areas

D304 junctions/populated areas
Type	Slip roads/Notes
	Kastav Kastav Kastav is a historical town located about 10 km northwest of Rijeka and about 5 km northeast of Opatija in Primorje-Gorski Kotar County in Croatia.-Demographics:The total population of Kastav is 10,472 .... : Ž5021 to Viškovo Viškovo Viškovo is a municipality in the Primorje-Gorski Kotar county in western Croatia. There are 8,907 inhabitants, with 85% Croats.... Ž5047 to Matulji Matulji Matulji is a municipality in Primorje-Gorski Kotar County, Croatia. It is located west of the Croatian town Rijeka, north of the town of Opatija, and it borders Slovenia... L58042 to Čikovići Northern terminus of the road.
	Rijeka Rijeka Rijeka is the principal seaport and the third largest city in Croatia . It is located on Kvarner Bay, an inlet of the Adriatic Sea and has a population of 128,735 inhabitants... : L58043 to Ž5047 L58044 to Ž5025
	A7 A7 (Croatia) The A7 motorway is a long motorway in Croatia. It connects the nation's largest port in Rijeka, to the Croatian motorway network, as well as to the Rupa and Pasjak border crossings to Slovenia. The motorway forms part of a longitudinal transportation corridor in Croatia, and it is a part of... , in Diračje Diračje Diračje is a location in Rijeka, Croatia. It is not registered as a standalone settlement by the Croatian Bureau of Statistics. The Rijeka bypass has an interchange near Diračje....  interchange
	Rijeka Rijeka Rijeka is the principal seaport and the third largest city in Croatia . It is located on Kvarner Bay, an inlet of the Adriatic Sea and has a population of 128,735 inhabitants... : City centre D8 D8 (Croatia) D8 state road comprises Croatian section of Adriatic Highway, and it runs from Pasjak border crossing to Slovenia via Rijeka, Senj, Zadar, Šibenik, Split, Opuzen and Dubrovnik to the border with Montenegro at Karasovići. Most of the D8 state road is still a two-lane road, excepting rare four-lane...  state road to Matulji Matulji Matulji is a municipality in Primorje-Gorski Kotar County, Croatia. It is located west of the Croatian town Rijeka, north of the town of Opatija, and it borders Slovenia... to the west and to Rijeka city centre to the east. Southern terminus of the road.