D21 state road | |
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Route information | |
Part of | |
Length: | 80.1 km (49.8 mi) |
Major junctions | |
From: | Kaštel border crossing to Slovenia Slovenian G11 |
A9 in Medaki, Vodnjan north and Vodnjan south interchanges D300 in Buje D44 in Ponte Porton D301 in Ponte Porton D302 near Baderna D303 near Svetvinčenat |
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To: | D400 in Pula |
Location | |
Counties: | Istria |
Major cities: | Pula, Vodnjan, Buje |
Highway system | |
D21 is a state road connecting the Kaštel border crossing and Buje, as well as A9 motorway via D510 state road. The road is 80.1 km (49.8 mi) long.[1]
The road provides connections to several towns and cities in central and western Istria, most notably to Grožnjan, Svetvinčenat and Pazin via roads connecting to D21.
Prior to construction of the A9 motorway, D21 was the main north-south road in the western Istria, and it was heavily congested in summer due to heavy tourist traffic and the fact that it served as the main connection for regular traffic in the area, passing through many settlements. Now it serves as a parallel road to the A9 motorway, as it is linked to virtually every interchange of the motorway by connecting roads of varying length, most notably D510, D200 and Ž5002 which serve, along the D21 state road, as the main connection of the A9 motorway and Slovenian road network - to route 11 and then towards H5 expressway to Koper, Slovenia and Trieste, Italy.[2][3]
The road, as well as all other state roads in Croatia, is managed and maintained by Hrvatske ceste, a state-owned company.[4]
Contents |
Traffic is regularly counted and reported by Hrvatske ceste, operator of the road.[5] Substantial variations between annual (AADT) and summer (ASDT) traffic volumes are attributed to the fact that the road connects a number of summer resorts to the Croatian motorway network.
D21 traffic volume | ||||
Road | Counting site | AADT | ASDT | Notes |
D21 | 2702 Kaštel | 1,807 | 2,805 | Adjacent to Kaštel border crossing. |
2707 Sveti Ivan | 2,420 | 3,264 | Adjacent to Ž5008 junction. | |
2719 Vižinada north | 1,644 | 2,847 | Between D44 and Ž5041 junctions. | |
2721 Baderna north | 2,015 | 3,009 | Adjacent to D48 junction. | |
2717 Bale | 2,320 | 2,783 | Between Ž5098 and Ž5096 junctions. | |
3905 Pula north | 7,136 | 9,464 | Between Ž5115 and Ž5117 junctions. The site effectively counts traffic between D21 and D400. |
Listed settlements with no specified junctions contain intersections with non-categorized roads.
All intersections are located in Istria County, Croatia.
km | Location | Junction | Notes[6] | ||
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0 | Kaštel border crossing | G11 | Kaštel border crossing to Slovenia.[7] Northern terminus of the road and of the European route E751; Northbound D21 traffic defaults to Slovenian G11 road |
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1 | D510 E751 |
Connection to A9 motorway Umag interchange and to Plovanija border crossing to Slovenia (via D200 state road); The D21 and the E751 north of the intersection are concurrent | |||
3 | Kaštel | ||||
5-6 | Buje | D200 | To Plovanija border crossing | ||
D300 | To A9 motorway and Umag | ||||
Ž5007 | To Šterna, Oprtalj and Karojba | ||||
Ž5008 | To Grožnjan | ||||
15 | Bijele Zemlje | ||||
18 | Ponte Porton | D44 | To Buzet | ||
D301 | To A9 motorway Novigrad interchange and Novigrad | ||||
23 | Vižinada | Ž5041 | To Brnobići | ||
26 | Ferenci | ||||
31 | Žužići | Ž5042 | To Višnjan | ||
34 | Cvitani | ||||
38 | Baderna | D48 | To Pazin | ||
D302 | To A9 motorway Baderna interchange and Poreč. | ||||
45 | Medaki interchange | A9 E751 |
Connection to the A9 motorway (E751) | ||
47 | Ž5002 | To Vrsar | |||
52 | D303 | To A9 motorway and Rovinj | |||
58 | Ž5098 | To Krmed and Svetvinčenat. | |||
60 | Bale | Ž5095 | To Rovinj | ||
69 | A9 E751 |
The A9 at Vodnjan sjever (north) interchange, accessed via a short connecting road | |||
70-72 | Vodnjan | ||||
73 | A9 E751 |
The A9 at Vodnjan jug (south) interchange, accessed via a short connecting road | |||
75 | Ž5117 | To Galižana | |||
76 | Ž5115 | To Fažana, Barbariga and Brijuni National Park (access by boat)[8] | |||
77-80 | Pula | D400 | To A9 motorway Pula interchange, D66 state road, Pula Airport and Pula ferry port Southern terminus of the road |
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1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus • Closed/Former • Incomplete access • Unopened |