A8 (Croatia)

A8 motorway
Autocesta A8
Istarski ipsilon
in use other motorways
Route information
Part of
Length	64.0 km (39.8 mi)
Major junctions
From	A9 at the Kanfanar interchange
Major intersections	D8 near Opatija D44 at the Lupoglav interchange
To	A7 at the Matulji interchange
Location
Country	Croatia
Counties	Primorje-Gorski Kotar, Istria
Major cities	Pazin, Opatija, Rijeka
Highway system
Highways in Croatia

The A8 motorway (Croatian: Autocesta A8) is a 64.0-kilometre (39.8 mi) toll motorway in Croatia. It connects the A7 motorway near Rijeka with the road network in the Istrian peninsula via the Učka Tunnel. The road terminates at the Kanfanar interchange with the A9 motorway, which with the A8 motorway forms the Istrian Y road system. The motorway's national significance is reflected in its positive economic impact on the cities and towns it connects, as well as its importance to tourism in Croatia. The importance of the motorway for tourism is particularly high during the summer tourist season, when its traffic volume increases by about 65%.

The construction of the A8 motorway and the Istrian Y can be traced back to 1968 when the Croatian Parliament decided to build a modern road linking Istria with the rest of Croatia. Subsequently, a bond to fund the construction was issued. The construction work started in 1976; in 1981 the Učka Tunnel was finished and a 22.6-kilometre (14.0 mi) section of the route between Matulji and Lupoglav was completed as a single-carriageway, two-lane expressway. The Lupoglav-Cerovlje portion was the next one to be completed, in 1988. The route was extended to the Rogovići interchange between 1992 and 1998, and the remaining section to Kanfanar was completed in 1999 as a two-lane road. In 2011, the expressway route started to be expanded gradually with the addition of a new carriageway and emergency lanes, eventually making most of it a controlled-access highway; the expansion of the route's first section, between Kanfanar and Rogovići, was completed in October 2011. The route's full expansion to motorway standards – including six lanes and grade separation of all its interchanges – is scheduled by 2015, when a second tube for the Učka Tunnel and a new route connecting the tunnel to the A7 motorway are planned. Construction slowed in the 1990s due to a lack of funding; therefore, a build-operate-transfer concession for the Istrian Y was granted to the BINA Istra corporation for a period of 32 years.

All intersections found along the route are grade separated, except for a single at-grade intersection currently regulated by traffic lights; a new route is planned to bypass this intersection. As of June 2021, there were eleven exits and two service areas along the route. The motorway is currently toll-free except for the Učka Tunnel and the Kanfanar-Rogovići section. However, most of the motorway is potentially a toll road using a ticket system, with each exit including a toll plaza except those of Veprinac, Opatija, and Matulji. The toll system of the A8/A9 Istrian Y is integrated: A8 tickets are valid interchangeably on the A9 sections and vice versa, thus obviating the need to stop between the sections.