The Corridor Xa is a branch of the Pan-European Corridor X. It runs north–south between the cities of

Graz Graz (; sl, Gradec) is the capital city of the Austrian state of Styria and second-largest city in Austria after Vienna. As of 1 January 2021, it had a population of 331,562 (294,236 of whom had principal-residence status). In 2018, the popul ...

and

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, northwest of the country, along the Sava river, at the southern slop ...

through three countries:

Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...

Slovenia Slovenia ( ; sl, Slovenija ), officially the Republic of Slovenia (Slovene: , abbr.: ''RS''), is a country in Central Europe. It is bordered by Italy to the west, Austria to the north, Hungary to the northeast, Croatia to the southeast, an ...

and

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 ...

. The road route of Corridor Xa is

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

European route E59 European route E 59 is a north-south Class-A intermediate European route. It begins in Prague, Czech Republic, passes through Vienna, Austria and Maribor, Slovenia, ending near Zagreb, Croatia. The total length of the route is . The E59 larg ...

throughout its entire length.

Road route

The corridor starts at the A9 (''Pyhrn Autobahn'') highway in Graz, Austria. It follows the highway from the junction with the A2 and the

European route E66 European route E66 is a part of the International E-road network. This Class A intermediate west-east route runs from Franzensfeste in Italy to Székesfehérvár in Hungary, connecting the Alps with the Pannonian Plain. Itinerary The E ...

for to the border with Slovenia at

Spielfeld Spielfeld ( Slovene: ''Špilje'') is a former municipality in the district of Leibnitz in Austrian state of Styria. Since the 2015 Styria municipal structural reform, it is part of the municipality Straß in Steiermark. It was an Austria-Slovenia b ...

. In Slovenia the corridor continues from the Austrian border at Šentilj for along the

A1 motorway A1, A-1, A01 or A.1. may refer to: Education * A1, the Basic Language Certificate of the Common European Framework of Reference for Languages * Language A1, the former name for "Language A: literature", one of the IB Group 1 subjects * A1, a ...

(''Slovenika'') to the city of

Maribor Maribor ( , , , ; also known by other #Name, historical names) is the second-largest city in Slovenia and the largest city of the traditional region of Styria (Slovenia), Lower Styria. It is also the seat of the City Municipality of Maribor, th ...

and the Slivnica. There it switches to the A4 motorway for until

Draženci Draženci () is a village in the Municipality of Hajdina in northeastern Slovenia. The area is part of the traditional region of Styria. It is now included with the rest of the municipality in the Drava Statistical Region. History In 2005, the set ...

near

Ptuj Ptuj (; german: Pettau, ; la, Poetovium/Poetovio) is a town in northeastern Slovenia that is the seat of the Municipality of Ptuj. Ptuj, the oldest recorded city in Slovenia, has been inhabited since the late Stone Age and developed from a Roman ...

, continuing (while A4 construction is in progress) on the G9 main road for a few dozen kilometers to the Croatian border at Gruškovje. In Croatia the corridor follows the A2 toll highway for from

Macelj Macelj (; ) is the name of a village and a forest in northern Croatia bordering on Slovenia. There is an official border crossing in Macelj, and the end of the A2 highway. The villages are administratively divided into Gornji Macelj (''Upper''), p ...

outskirts. The highway has three to six lanes throughout its entire length. Upon approaching

Zaprešić Zaprešić () is a town in Hrvatsko zagorje, Zagreb County in Croatia. It has a population of 19,644 inhabitants in the town proper, with 25,223 in the administrative area. The town's metropolitan area, which encompasses the seven neighbouring m ...

interchange in suburban Zagreb, small backups on the mainline toll plaza are encountered at all times of day. The last part of the Corridor between

and

Lučko interchange The Lučko interchange ( hr, Čvor Lučko) is a hybrid ( Full Y/ Half-clover) interchange in Zagreb, Croatia. It is named after the nearby Zagreb neighborhood of Lučko. The interchange represents the northern terminus of the A1 motorway and it co ...

s is part of the

Zagreb bypass Zagreb bypass ( hr, Zagrebačka obilaznica) 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 Helen ...

. Congestion can be bad at rush hour near interchanges, though. Transport in Europe Roads in Croatia 10a Roads in Slovenia {{Europe-road-stub