separation from A6 south of Szczecin A2 near Jordanowo Expressway S3 or express road S3 (in Polish droga ekspresowa S3) is a Polish highway, which is planned to run from Świnoujście on the Baltic Sea through Szczecin, Gorzów Wielkopolski, Zielona Góra and Legnica, to the border with the Czech Republic, where it will connect to the planned D11 motorway.

In 2001 the decision was made to build a lower standard "express road" as the traffic density was judged too low to justify a motorway.

One section of S3 east of Szczecin (19 km) was constructed in the 1970s in an expressway standard of those times, featuring one-level intersections and a pedestrian crossing.

[9] The exception was the section Polkowice - Lubin, which was also contracted to be completed in the first half of 2018, but the deal with Salini Impregilo was terminated in 2019 due to extensive delays in construction.

The section from Kamienna Góra to the border was opened in September 2023, while the section from Bolków to Kamienna Góra was opened in July 2024. modified trumpet interchange planned extension of Expressway S6 will end here cloverleaf interchange planned Expressway S10 will start here Północ means north Northern endpoint of the stretch with three lanes per carriageway Border with Czechia