Istrian Y
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The Istrian Y (Croatian: Istarski ipsilon) is a highway complex in the Croatian highway network, consisting of B8 expressway (Matulji-Kanfanar) and B9 expressway (Slovenian border - Kanfanar - Pula). It is called the Istrian Y because it is shaped like the letter Y, with the three stretches both meeting at Kanfanar in south central Istria. The complex was built and will be maintained by Bina-istra company until 2027.[1] Both highways have a speed limit of 110 km/h (68 mph).
The B8 highway is 64.21 km (39.90 mi) long. It contains the 5.4 km (3.4 mi) long Učka tunnel, the third longest tunnel in Croatia. The B9 highway is 76.79 km (47.72 mi) long. It includes the tolled Mirna bridge.
As of 2007, both expressways are completed in the two-lane freeway form. When the traffic levels reach 10,000 vehicles per day year-round or 16,000 vehicles per day during the summer, whichever happens first, the Phase II will start. It includes construction of the second roadway and an upgrade to a full-profile highway including changing the designations from B8 and B9 to A8 and A9, respectively. Current traffic levels are 600 vehicles per day at the Mirna bridge and 1,000 vehicles per day at the Učka tunnel.
Upon finishing Phase II, a closed toll collection system will be in use. Only the Mirna bridge and Učka tunnel are currently tolled. Drivers driving at B8 or B9 at these places pay toll that amounts for the entire B8 or B9 length at the current highway toll tariff.
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