A1 Motorway (Zagreb – Ploče)

Built as the Zagreb–Karlovac section of the Zagreb–Rijeka motorway and later made part of the A1. English Wikipedia gives 39.3 km; the mapped alignment between the Lučko and Karlovac interchanges measures 38.97 km.

Opened 2001 per English Wikipedia, which names Vukova Gorica as the end of this section; the cut is at the Vukova Gorica rest area. Includes the Novigrad interchange, opened in June 2012 on the existing road. Length measured from OpenStreetMap geometry.

Opened 2003 per English Wikipedia, one of the first sections not shared with the Zagreb–Rijeka motorway. Passes the Bosiljevo 1, Bosiljevo 2 (A6 junction) and Ogulin interchanges. Length measured from OpenStreetMap geometry.

English Wikipedia: the tunnel itself opened in 2005, a year after the roads on both sides, and was first operated as a single tube with two-way traffic. Length is that of the OpenStreetMap way tagged Mala Kapela. It is a lot of the A1 itself, not a separate structure project. Length measured from OpenStreetMap geometry.

Opened 2004 per English Wikipedia. Passes the Brinje, Žuta Lokva (A7 junction), Otočac, Perušić and Gospić interchanges. Length measured from OpenStreetMap geometry.

English Wikipedia names this section Gornja Ploča–Zadar 2 and dates its opening to 2003; Zadar 2 is taken here to be the Zadar istok interchange. Includes the Sveti Rok tunnel, whose excavation began in 1993 per the same article, and the Maslenica Bridge. Length measured from OpenStreetMap geometry.

English Wikipedia dates Zadar 2–Pirovac to 2004. The Vodice exit, which serves Pirovac, is taken here as the Pirovac interchange. Passes the Benkovac interchange. Length measured from OpenStreetMap geometry.

English Wikipedia dates Pirovac–Vrpolje to 2005. The Danilo exit, which serves Vrpolje, is taken here as the Vrpolje interchange. Passes the Skradin and Šibenik interchanges; the Šibenik–Podi interchange was added in April 2024 per the same article. Length measured from OpenStreetMap geometry.

English Wikipedia dates Vrpolje–Dugopolje to 2004; the A1 interchange at Dugopolje is signed Split. Passes the Prgomet and Vučevica interchanges. Length measured from OpenStreetMap geometry.

Croatian Wikipedia: 37 km, opened 27 June 2007, with 6 tunnels, 5 viaducts and a bridge over the Cetina. The mapped alignment measures 36.43 km. Passes the Bisko and Blato na Cetini interchanges.

Croatian Wikipedia: 40 km, opened December 2008, worth about 1.66 billion kuna, with 47 structures (7 viaducts, 9 overpasses, 29 underpasses, 2 wildlife crossings). English Wikipedia gives 22 December 2008. Passes the Zagvozd interchange. The mapped alignment measures 40.49 km.

Croatian Wikipedia: 9.8 km, opened 30 June 2011, with 5 viaducts, 4 overpasses, 1 tunnel and the Vrgorac interchange. The mapped alignment measures 10.45 km.

Croatian Wikipedia: opened 20 December 2013, 11 km from Vrgorac to the Ploče interchange and a further 5 km from the interchange towards the town of Ploče, joining the D8; 7 viaducts, 2 overpasses, 2 underpasses and 4 tunnels across both. Sourced length is 11 + 5 km; the mapped alignment measures 16.5 km. The A10 to the Bosnian border opened the same day. HAC stated the Zagreb–Split–Dubrovnik motorway then totalled 483.1 km.