Conceptually forming one continuous route with motorway A2, it was initially planned (since 1970s) as a part of it, however after local Warsaw residents objected to the plans of an inner-city motorway, the proposed road was downgraded to an expressway (though the actual route was not changed).

[2] Both sections were scheduled to be completed in mid 2012 in time for the Euro 2012 football championships, however this deadline was not met.

The final part of this phase of the project up to Puławska junction was opened in late September 2013.

The second phase of the project took the expressway S2 east of Puławska across the Vistula river, through the Anna Jagiellon Bridge, connecting the route with the eastern part of the Warsaw Express Ring Road and the continuation of the motorway A2 eastwards.

[5] The contracts were:[citation needed] From 2025, on the section between Wilanow and Lubelska junctions, average speed measurement devices will be installed to reduce noise pollution.