|Length:||49 km (30 mi)|
|Beltway around Zagreb|
|From:||A2 in Zaprešić interchange|
| A3 in Jankomir interchange
A1 in Lučko interchange
A3 in Ivanja Reka interchange
|To:|| A4 and
A12 in Sveta Helena interchange
|Counties:||City of Zagreb, Zagreb County|
|Major cities:||Zagreb, Velika Gorica, Samobor, Zaprešić|
|Highways in Croatia|
Zagreb bypass (Croatian: obilaznica, zaobilaznica) 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 Helena section was built between 1996 and 1999. 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. The bypass crosses the Sava River twice and comprises a bridge across the Sava-Odra floodwater overflow canal. 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.
Zagreb bypass is not designated as a separate motorway with a distinct motorway number, rather it consists of sections of three motorways:
|A2||Zaprešić – Jankomir|
|A3||Jankomir - Lučko - Buzin - Kosnica - Ivanja Reka|
|A4||Ivanja Reka - Kraljevečki Novaki - Popovec - Sveta Helena|
The bypass currently comprises four traffic lanes along its entire length, with an emergency lane in each direction. In its current form, the Zagreb bypass has a small number of interchanges spaced widely apart. For example, the current Zaprešić interchange extends a trip from Zaprešić to Zagreb via the bypass by 4.5 km (2.8 mi). The last new interchange was built in 2007–2008 at Kosnica in the southeast, to connect the Homeland Bridge and Zagreb via Radnička cesta (Ž1029).
There are two rest areas along the bypass: Lučko rest area is located between Jankomir and Lučko interchanges comprising famous Plitvice Motel, well known for its pedestrian bridge across the bypass, while Sesvete rest area is located between Popovec and Sveta Helena interchanges. A new rest area is planned between Jakuševec and Kosnica interchanges.
A proposal has been made in 2007 for a new interchange near Zaprešić, one that would reduce traveling time between the cities.
As a part of the A11 motorway Jakuševec interchange - Velika Gorica section construction works, a new interchange is under construction east of current Buzin interchange, which is in turn planned to be abolished, in favor of another new interchange, Sveta Klara, further to the west.
A long-term plan exists to build a new outer bypass road around Zagreb. The outer bypass would be a part of the tolled motorway network thus permitting vehicles not to stop at two toll plazas near Zagreb as they enter and leave the present bypass, decreasing congestion on the inner bypass motorway. 2009-2012 motorway and road construction plan entails funds for development of design documents for the outer bypass motorway and specifies its route: It is to be a 106 km (66 mi) long motorway originating from the A2 motorway Luka interchange, connecting the A3 motorway Gradina interchange near Samobor, the A1 motorway Horvati interchange, the A11 motorway Mraclin interchange, once again the A3 motorway Ivanić Grad interchange and finally the A4 motorway Zelina interchange. A total of 14 interchanges are planned on the new bypass, including the ones connecting it to the other motorways already specified, connecting the outer bypass to all major roads intersected.
Because of the Medvednica Mountain north of Zagreb, the present bypass is U-shaped, leaving the city without a northern bypass that would connect the A2 and A4 highways. A northern branch (around 27 km long) of the bypass was planned and designed to bridge the gap. It was planned to connect the Zaprešić interchange with the Popovec interchange. The route would have required a number of long tunnels and viaducts making it expensive. 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 tunnels longer than 500 m would be: Ivanec Tunnel (2656 m), Borčec Tunnel (1797 m), Pantovčak Tunnel (1625 m), Dotrščina Tunnel (1050 m), Remete 1 Tunnel (1025 m), Čuguvec Tunnel (550 m) and Novaki Tunnel (502 m). 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. However, as of September 2011, all such plans were cancelled as unfeasible.
|Connection to Zaprešić and Zagreb via Aleja Bologne and Ilica.
The westernmost interchange of the Zagreb bypass.
Westbound traffic continues along the northbound A2 motorway towards Krapina and Maribor, Slovenia.
The D1 road is not physically signposted along the Zagreb bypass.
|0.3||Sava River Bridge|
|City of Zagreb||7.4||7/3||Jankomir|| A3
|Connection to the A3 motorway (E70) (connecting Samobor and Ljubljana, Slovenia to the west) and to Zagreb via the Ž1035 road.
The southern terminus of the European route E59.
For the eastbound traffic the exit is signposted as A2 exit number 7, and for the westbound traffic the exit is signposted as A3 exit number 3.
The Zagreb bypass switches between the A2 (to the west) and the A3 (to the east) at this point.
|9.9||Lučko rest area|
|Connection to A1 motorway and to the City of Zagreb via Jadranska Avenue.
The western terminus of European routes E65/E71 concurrency.
The eastern terminus of the D1 state road concurrency and the western terminus of D3 state road concurrency; the state roads are not signposted along the Zagreb bypass.
|19.0||4a||Sveta Klara||L10100||A planned connection to the City of Zagreb via Novi Zagreb and Većeslava Holjevca Avenue|
|Connection to the City of Zagreb via Savezne Republike Njemačke Street and Novi Zagreb, Zagreb airport and to Velika Gorica|
|Interchange to the A11 motorway (under construction), providing connections to Zagreb via Sarajevska Road and to Velika Gorica.
Construction of the interchange is scheduled to be completed by December 31, 2010. Until that time, an 80 km/h speed limit applies in the zone of the interchange.
|Connection to the City of Zagreb via Radnička Road (Ž1029 to the north) and to Velika Gorica and Zagreb Airport (D31 to the south; the southern ramp under construction as of October 2010)|
|33.4||Sava River Bridge|
|34.1||6/12||Ivanja Reka|| A3
|Connection to the A3 motorway leading east towards Slavonski Brod and Osijek. Connection to the City of Zagreb via Ž1035.
The eastern terminus of European route E70 concurrency.
For the westbound traffic the exit is signposted as A4 exit number 12, and for the eastbound traffic the exit is signposted as A3 exit number 6.
The Zagreb bypass switches between the A3 (to the west) and the A4 (to the east) at this point.
|City of Zagreb||34.9||11||Kraljevečki Novaki||Ž3034||Connection to Sesvete and Dugo Selo|
|38.1||10||Popovec||D3||Connection to Popovec and Soblinec (D29)
The northern terminus of concurrency of the A4 motorway and the D3 state road.
The D3 road is not physically signposted along the Zagreb bypass.
|42.0||Sesvete rest area|
|Zagreb||48.9||9||Sveta Helena|| A4
|Connection to Vrbovec and Bjelovar via D28 expressway.
Future connection to A12 motorway (planned).
Connection to Rakovec, Sveta Helena and Donja Zelina (D3) (via the Ž3016)
The easternmost interchange of the Zagreb bypass. The eastbound traffic defaults to the northbound A4.
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- "3. Niskogradnja: Autoceste". Hidroelektra Niskogradnja. 2008-07-30.
- "Regulation on motorway markings, chainage, interchange/exit/rest area numbers and names". Narodne novine (in Croatian). April 24, 2003.
- "Decision on categorization of public roads as state roads, county roads and local roads". Narodne novine (in Croatian). February 17, 2010.
- "Kosnica Interchange" (in Croatian). Hrvatske autoceste. May 8, 2007.
- "A3 Motorway: Bregana - Zagreb - Lipovac" (in Croatian). Hrvatske autoceste. July 3, 2006.
- "2009-2012 Public Roads Construction and Maintenance Program". HUKA (in Croatian). December 3, 2009.
- "New 600 million Euro bypass". Jutarnji list (in Croatian). September 29, 2008.
- "New 600 million Euro bypass (virtual copy of the Jutarnji List article, but with a map)". Novi Zagreb info (in Croatian). October 9, 2008.
- Official study concerning Northern branch
- Kekić, Jasmina (2008-02-28). "Izgradnja sjeverne tangente mogla bi početi već 2009.". Vjesnik. Retrieved 2009-07-03.
- "Reports on traffic conditions". Hrvatske autoceste. Retrieved July 29, 2011.
- "Čvor Kosnica" [Kosnica interchange] (PDF) (in Croatian). Ministry of Sea, Transport and Infrastructure. May 8, 2007. Retrieved October 2, 2010.