List of first class roads in Slovakia

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The list of Class I roads in Slovakia contains an overview of all communications that are categorized as Class I roads.

Route name	sign	Route	Length [km]
I/2		Holíč – Malacky – Bratislava – Hungarian border at Rusovce	100
I/9		Czech border at Drietoma – Trenčín – Prievidza – Žiar nad Hronom Former portion of I/50	114
I/10		Czech border at Bumbálka – Bytča	30
I/11		Czech border at Svrčinovec – Čadca – Žilina	37
I/11A		Čadca bypass Portion of D3 motorway	5
I/11b		Čadca	1
I/12		Svrčinovec – Polish border at Skalité	15
I/13		Veľký Meder – Hungarian border at Medveďov	12
I/14		Banská Bystrica – Turčianske Teplice	22
I/15		Vranov nad Topľou – Stropkov	49
I/16		Zvolen – Lučenec – Rožňava – Košice Former portion of I/50	197
I/17		Hungarian border at Milhosť – Košice Former portion of I/68	18
I/18		Žilina – Vrútky – Ružomberok – Poprad – Prešov – Vranov nad Topľou – Michalovce Originally began at Bumbálka, but this section became the new I/10, a portion of the current I/61 and the new I/60 in 2015.	304
I/19		Košice – Michalovce – Ukrainian border at Vyšné Nemecké Former portion of I/50	90
I/20		Košice – Prešov Former portion of I/68	24
I/21		Lipníky – Svidník – Polish border at Vyšný Komárnik	59
I/35		Galanta – Sereď	8
I/49		Czech border at Lysá pod Makytou – Púchov – Beluša	27
I/49A		Dolné Kočkovce – Púchov Portion of R6 expressway	5
I/50		Czech border at Drietoma – Ukrainian border at Vyšné Nemecké Decommissioned on 1 August 2015. The Drietoma–Ladomerská Vieska section became the new I/9, the Ladomerská Vieska–Šášovské Podhradie section became a portion of current I/65, the Zvolen–Košice section became the new I/16, and the Košice–Vyšné Nemecké section became the new I/19.	403
I/51		Czech border at Holíč – Trnava ; Nitra – Hontianske Nemce – Banská Štiavnica – Hronská Breznica	200
I/54		Czech border at Moravské Lieskové – Nové Mesto nad Váhom	16
I/57		Czech border at Horné Srnie – Dubnica nad Váhom	12
I/59		Banská Bystrica – Ružomberok – Dolný Kubín – Polish border at Trstená	114
I/60		Žilina ring road	6.5
I/61		Austrian border west of Bratislava – Bratislava – Senec – Trnava – Piešťany – Nové Mesto nad Váhom – Trenčín – Považská Bystrica – Žilina	191
I/61A		Beluša	2
I/62		Senec – Sereď – Šoporňa	37
I/63		Bratislava – Dunajská Streda – Komárno – Štúrovo – Hungarian border	148
I/64		Hungarian border – Komárno – Nové Zámky – Nitra – Prievidza – Žilina	213
I/64A		Rajeckých Teplíc bypass	1
I/64b		Bytčica
I/64C		Road I/64 – Road I/64b
I/64d		Topoľčiani – Krušovice
I/65		Nitra – Zlaté Moravce – Čaradice ; Hronský Beňadik – Nová Baňa; Žarnovica – Žiar nad Hronom – Turčianske Teplice – Martin – Vrútky	125
I/65D		Martin bypass	7
I/66		Hungarian border at Šahy – Zvolen – Banská Bystrica – Brezno – Vernár – Poprad – Spišská Belá – Polish border at Tatranská Javorina	244
I/66A		Poprad bypass	3.64
I/67		Hungarian border at Kráľ – Tornaľa ; Rožňava – Pusté Pole Originally continued to Tatranská Javorina, but this (along with I/67A) became a portion of I/66 in 2015.	61
I/68		Polish border at Mníšek nad Popradom – Stará Ľubovňa – Prešov Originally continued to the Hungarian border at Milhosť, but this section was split off to the new I/17 and I/20 in 2015.	80
I/69		Kováčová – Banská Bystrica	13
I/70		Párnica – Dolný Kubín	18
I/71		Lučenec – Hungarian border at Šiatorská Bukovinka	26
I/72		Rimavská Sobota – Brezno ; Podbrezová – Liptovský Hrádok	105
I/73		Lipníky – Svidník – Polish border at Vyšný Komárnik Decommissioned on 1 August 2015 and renumbered to I/21.	59
I/74		Strážske – Humenné – Ukrainian border at Ubľa	60
I/74A		Humenné inner bypass	3
I/74B		Humenné inner bypass	0.1
I/75		Sládkovičovo – Galanta – Šaľa – Nové Zámky – Veľký Krtíš – Lučenec	200
I/75A		Galanta bypass	9
I/76		Štúrovo – Hronský Beňadik	75
I/77		Spišská Belá – Stará Ľubovňa – Bardejov – Svidník	115
I/77A		Čirč – Polish border	0.1
I/78		Oravský Podzámok – Námestovo – Polish border at Oravská Polhora	44
I/79		Vranov nad Topľou – Trebišov – Slovenské Nové Mesto – Čierna	90
I/79A		Slovenské Nové Mesto – Hungarian border	0.4
I/80		I/68 in Presov – D1 motorway in Presov Decommissioned on 1 October 2020 and absorbed into I/68.	1.8

• Highways in Slovakia
• Transport in Slovakia
• Controlled-access highway
• Limited-access road

• Miestopis cestných komunikácií (Slovenská správa ciest)^[1]

• https://ww-w.ndsas.sk/narodna-dialnicna-spolocnost
• https://www.ssc.sk/sk/Aktualne.ssc