The route was initially agreed upon in 2006 by Lithuania, Poland, Hungary and Slovakia. In 2010, this group was joined by Greece, Romania and Bulgaria who signed the so called Łańcut Declaration.
On 22 June 2017, Poland and the Ukraine signed a cooperation agreement for the construction of the road. Signatories indicated the road could be part of the Trans-European Transport Network (TEN-T).
Construction commenced in individual sections along the road with the entire road expected to open in 2025.
The sections known to be under construction or completed are:
- 4 sections of the S19 Expressway in Poland
- Parts of the M30 motorway in Hungary (Hungary to the Slovakian border expected to open 2022)
- R4 expressway in Slovakia
The road will run in a general north-south direction through central Europe from the Baltic Sea to the Mediterranean. Its northern terminus is the Lithuanian port city of Klaipėda. It will then cross the country eastward, pass through eastern Poland, eastern Slovakia and the Hungarian and Romanian border. It will continue in western Romania and western Bulgaria before entering Greece. Its southern terminus is the Greek port city of Thessaloniki. A fork in the south may continue eastwards through Romania to the Black Sea port town of Constanta.
- "Highway from Rzeszów to Budapest - Via Carpathia under construction". www.sejm.gov.pl (in Polish). Retrieved 2018-07-13.
- "Via Carpathia – An Investment in the Future | Warsaw Institute". warsawinstitute.org. Retrieved 2018-07-13.
- www.ideo.pl, ideo -. "President of the Republic of Poland / Archive / News archive 2000-2010 / News 2006 / Łańcut Declaration". m.prezydent.pl. Retrieved 2018-07-13.
- "Poland, Ukraine to build Via Carpathia". New Europe. 2017-10-24. Retrieved 2018-07-13.
- Reformists, European Conservatives and. "ECR Group - European Conservatives and Reformists Group". ecrgroup.eu. Retrieved 2018-07-13.
- a.s., Petit Press. "New stretch of the Hungarian highway eases travel for Slovaks". spectator.sme.sk. Retrieved 2018-07-13.
- a.s., Petit Press. "Figeľ: R4 highway will help eastern Slovakia to develop". spectator.sme.sk. Retrieved 2018-07-13.
- SA, PAP. "New airport hub and Via Carpatia Poland's top infrastructure projects | News | Polish Press Agency". www.pap.pl. Retrieved 2018-07-13.
- "Via Carpatia: Pe unde va traversa România noua autostradă dintre Mediterana şi Marea Baltică". www.economica.net. 2016-03-06. Retrieved 2018-07-13.