[1] The bypass is 48.9 kilometres (30.4 mi) long, tracing around the city from the northwestern suburb of Zaprešić to Sveta Helena in the northeast.

As the busiest sections between Jankomir and Buzin interchanges carry traffic volume of approximately 45,000 AADT, it is the most heavily used motorway sector in Croatia.

[9][10] According to the general design alternative in a study executed by the Faculty of Architecture and Institut IGH, the route would comprise 15 tunnels.

The construction works were planned in stages with an additional 5–10 km long tunnel built subsequently through Medvednica Mountain to connect Zagreb and Hrvatsko zagorje directly.

Thus, HAC and the consortium led by the IGH Institute signed a contract for the development of a preliminary design, environmental impact assessment and obtaining a location permit for the reconstruction of the Zagreb bypass from Jankomir to Ivanja Reka by upgrading the third lane and for the main and detailed design and obtaining a building permit, for the busiest section, Jankomir - Lučko.

The estimated value of the investment for the expansion of the entire bypass is around HRK 800 million, and the exact amount will be known after the development of the preliminary design.

[11] On September 29, 2021, highway patrol workers noticed increased vibrations on the Sava River Bridge between Jankomir and Zaprešić interchanges along the bypass.