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D4 Motorway
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
	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;

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.

History

The connecting motorway on the Austrian side, Nordost Autobahn A6 was opened on 19 November 2007. The highway connects the border with Slovakia to the Ost Autobahn A4. It provided connection to 3rd of its 5 neighboring country, until 2007 Slovakia was connected by motorway only to the Czech Republic and Hungary.^[1]

In 2016, the construction began of the 27 km long motorway section from the D2x D4 junction near Jarovce to Bratislava, Rača. All the section was set to open in 2020, which was delayed due to construction problems. Therefore, only the Bratislava, South - Bratislava, Podunajské Biskupice and the Bratislava, Podunajské Biskupice - Bratislava, Vrakuňa sections were opened in 2020. The rest of the section opened in the fall of 2021. However, the D1x D4 junction has been delayed all the way to the year 2026. ^[2] ^[3]

Sections of the motorway

Section number	Section name	Section length in km	Year of commencement of works on the section	Year of section completion (dd/mm/yy)	Exits and junctions (x) with other motorways
1.	SK/AT border – Bratislava, Jarovce	2,0	1996	1999	D4xD2 junction, Bratislava-Jarovce
2.	Bratislava, Jarovce – Bratislava, Petržalka	2,5	2016	3.10.2021	Bratislava-Petržalka
3.	Bratislava, Petržalka – Bratislava, juh (Bratislava, South)	4,5	2016	26.9.2021	D4xR7 junction, Bratislava-juh (South)
4.	Bratislava, juh (Bratislava, South) – Bratislava, Podunajské Biskupice	4,0	2016	19.7.2020	Bratislava-Podunajské Biskupice
5.	Bratislava, Podunajské Biskupice – Bratislava, Vrakuňa	3,6	2016	8.11.2020	Bratislava-Vrakuňa
6.	Bratislava, Vrakuňa – Bratislava, východ I (Bratislava, East I)	7,5	2016	11.2.2021	Bratislava-východ I (East I)
7.	Bratislava, východ I (Bratislava, East I) – D4xD1 Bratislava, východ II, (Bratislava, East II) junction	1,0	2016	12.11.2021	Section without exits
7.	D4xD1 Bratislava, východ II (Bratislava, East II) junction	0,0	2016	2025	Bratislava-východ II (East II), D4xD1 junction
8.	Bratislava, východ II (Bratislava, East II) – Bratislava, Vajnory	2,0	2016	12.11.2021	Bratislava-Vajnory
9.	Bratislava, Vajnory – Bratislava, Rača	2,4	2016	5.9.2021	Bratislava-Rača
10.	Bratislava, Rača – Bratislava, Záhorská Bystrica	12,4	2029	2035	Bratislava-Záhorská Bystrica, dostavba
11.	Bratislava, Záhorská Bystrica – Bratislava, Devinska Nová Ves, left half	3,0	2009	2011	Bratislava-Záhorská Bystrica, temporary connection D4xD2 junction, Stupava Bratislava-Devínska Nová Ves, temporary connection
11.	Bratislava, Záhorská Bystrica – Bratislava, Devinska Nová Ves, right half	3,0	2028	?	Bratislava-Devínska Nová Ves,
12.	Bratislava, Devínska Nová Ves – SK/AT border	3,6	2028	?	Section without exits, connection to an Austrian expressway at the border