D4 motorway (Slovakia)

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D4 Motorway
Diaľnica D4
Completed        Under construction        Planned
Almost finished motorway D4 in May 2020
Route information
Part of E58
Length	48 km (30 mi) Completed: 32 km (20 mi) Planned: 16 km (9.9 mi)
Major junctions
From	A6 border with Austria
Major intersections	D2 Bratislava - Jarovce R7 Bratislava - South D1 Bratislava - East (U/C) D2 Stupava
To	S8 border with Austria
Location
Country	Slovakia
Regions	Bratislava Region
Major cities	Bratislava
Highway system
Highways in Slovakia
← D3 → D1

D4 is a motorway in southwestern Slovakia. The planned highway is commonly referred to as the Bratislava bypass. For decades, there was only a short stretch from Austrian border at Jarovce to the junction with D2 (part of the former D61), construction of which started in 1996 and was opened in 1998. Construction of various other parts started in the late 2010s, with several openings throughout 2020 and 2021. The extension to the motorway D1 between Bratislava and Senec is underway, in order to connect the southern bypass of Bratislava to the country's main traffic artery. The bypass also intersects with expressway R7, parts of which are already open as well.