Expressway S3
Droga ekspresowa S3
Route information
Part ofE65
Length	436.0 km (270.9 mi) 470.6 km (292 mi) planned[1]
Major junctions
From	Świnoujście
Major intersections	merge withA6 east ofSzczecin separation fromA6 south ofSzczecin A2 nearJordanowo A4 nearLegnica
To	D11 border withCzech Republic
Location
Country	Poland
Regions	West Pomeranian Voivodeship Lubusz Voivodeship Lower Silesian Voivodeship
Major cities	Szczecin,Gorzów Wielkopolski, Zielona Góra,Legnica
Highway system
National roads in Poland Voivodeship roads
←S 2 →S 5

Expressway S3 orexpress road S3 (inPolishdroga ekspresowa S3) is aPolish highway, which is planned to run fromŚwinoujście on theBaltic Sea throughSzczecin,Gorzów Wielkopolski,Zielona Góra andLegnica, to the border with theCzech Republic, where it will connect to the plannedD11 motorway. The total intended length is 470.6 km (292.4 mi), of which 436.0 km (270.9 mi) is open to traffic and 33.0 km (20.5 mi) is under construction as of January 2025.

The main section fromSzczecin (interchange withA6) to theCzech border is completed. In was constructed from 2008 until 2024. The last 3 km near the border remain closed to traffic until around 2028 when the connecting stretch of theD11 motorway is to be constructed inCzech Republic.

The section fromŚwinoujście toSzczecin (A6) is partially completed and partially under construction, with planned completion in 2025.^[2]

Section	Length	Constructed	Notes
Świnoujście –Troszyn	33.0 km (20.51 mi)	Under construction – planned opening in 2025
Troszyn, Parłówko, Ostromice bypass	4.2 km (2.61 mi)	2009 – 2012
Ostromice –Miękowo	22.1 km (13.73 mi)	2017 – 2021
Miękowo bypass	4.8 km (2.98 mi)	2009 – 2012
Miękowo – Rzęśnica	21.8 km (13.55 mi)	In the 1970s with at-grade intersections, Reconstructed 2019 – 2020
Rzęśnica –Szczecin Klucz	18.3 km (11.37 mi)	In the 1930s byNazi Germany, Reconstructed 2007 – 2021	Concurrency with
Szczecin Klucz –Gorzów Wielkopolski	81.6 km (50.70 mi)	2007/2008 – 2010
Gorzów Wielkopolski bypass	11.7 km (7.27 mi)	Single carriageway: 2001 – 2007 Second carriageway: 2014 – 2017
Gorzów Wielkopolski –Międzyrzecz	37 km (22.99 mi)	2011 – 2014
Międzyrzecz bypass	6.4 km (3.98 mi)	Single carriageway: 2004 – 2006 Second carriageway: 2014 – 2016
Międzyrzecz –Sulechów	43 km (26.72 mi)	2010 – 2013
Sulechów –Nowa Sól	44 km (27.34 mi)	Single carriageway: 1985 – 1995, 2006 – 2008 Second carriageway: 2015 – 2018
Nowa Sól –Polkowice	33.3 km (20.69 mi)	2014 – 2018
Polkowice –Lubin	14.4 km (8.95 mi)	2014 – 2021
Lubin –Legnica –Bolków	69.7 km (43.31 mi)	2015 – 2018
Bolków –Kamienna Góra	16.1 km (10.00 mi)	2020 – 2024	Includes two tunnels: 2300m and 320m long
Kamienna Góra –Lubawka	15.3 km (9.51 mi)	2020 – 2023	The last 3 km are finished, but remain closed until the connectingD11 motorway is constructed inCzech Republic

Theautostrada A3 was a motorway planned from 1993^[3][4] to 2001^[5] that was supposed to run fromSzczecin toLubawka on the Polish-Czech border. Some road maps published in the 1990s depicted an approximate route of the motorway, which in some places was different from the final route of S3, most notably the motorway was supposed to form north-eastern bypass of Legnica^[6] while S3 was constructed as its western bypass.

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.^[7] One legacy of the road having been planned as an autostrada is that from the beginning it was being constructed on a completely new alignment some distance away from the old route of the DK3 road. This is akin to how most expressways in Poland are constructed nowadays, but in contrast to the standards of the 2000s when most of the expressways were being constructed by upgrading existing roads. Like other modern Polish expressways, S3 shares the crucial properties of an autostrada, including physical separation, restricted access, all interchanges being grade-separated, and at least two continuous lanes in each direction as well as emergency lanes (hard shoulder).

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. It was reconstructed in 2019–2020 to contemporary standards, with the intersections and the pedestrian crossing upgraded to grade-separated ones.

S3 south of Szczecin overlaps with A6 motorway (seeAutostrada A6: History of construction).

A single carriageway was constructed in years 1985–1995 on the sectionSulechów–Zielona Góra (27 km). Three short sections were constructed in years 2001–2008, also with the first carriageway only.

The first large section of S3 was the stretch from Szczecin to Gorzów Wielkopolski (82 km), opened to traffic in 2010,^[8] followed by the stretch from Gorzów Wielkopolski to Sulechów (80.6 km), opened to traffic in 2013/2014. The new sections had two carriageways, separated by the older stretches (Sulechów–Nowa Sól, Gorzów Wielkopolski bypass andMiędzyrzecz bypass) which still remained as single-carriageway.

In 2014–2017/2018, the expressway between Nowa Sól and Legnica (junction with A4) was constructed, and the second carriageway was added on the three older stretches.^[9] The exception was the sectionPolkowice -Lubin, which was also contracted to be completed in the first half of 2018, but the deal withSalini Impregilo was terminated in 2019 due to extensive delays in construction. It was ultimately opened to traffic in 2021.

Signing the contracts for construction of all four stretches between A4 at Legnica and theCzech border was planned for 2014. However, in 2013 the officials announced that the section will not enter into construction yet, because delays in preparations in the Czech Republic meant that the connecting motorway on the Czech side of the border might enter into construction no earlier than 2018^[10][11] (ultimately, the delays on the Czech side turned out to be even larger and the construction of the connecting stretch is expected to start in 2024 rather than in 2018^[12]). Some of the money allocated for it has been re-purposed to build theS2 expressway in Warsaw.

Later the decision was partially reversed, and in 2014 two tenders were opened for the section between Legnica and Bolków. This part (35.8 km) was constructed in years 2015–2018.^[13] The two remainingdesign-build contracts for the section from Bolków to the Czech border were signed in October 2018. 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.

Country	Voivodeship	Location	km	mi	Exit	Name	Destinations	Notes
Poland	West Pomeranian Voivodeship	Świnoujście			—	Roundabout nearWarszów	DK 3 /E65 –Ystad viaFerry DK 93 –Świnoujście via theŚwinoujście Tunnel	proposed northern endpoint of expressway Kilometrage starting point
					1	Świnoujście	Warszów	exit under construction as part of Świnoujście - Dargobądz section Incomplete junction: no exit ramp Szczecin → Świnoujście; no entry ramp Świnoujście → Szczecin
					2	LNG	Świnoujście LNG terminal	exit under construction as part of Świnoujście - Dargobądz section
					3	Łunowo	Łunowo Świnoujście LNG terminal (planned)	exit under construction as part of Świnoujście - Dargobądz section
		Gmina Międzyzdroje			4	Międzyzdroje	DW 102 –Międzyzdroje	exit under construction as part of Świnoujście - Dargobądz section
		Gmina Wolin			5	Dargobądz	Dargobądz	exit under construction as part of Dargobądz - Troszyn section
					6	Wolin Zachód	Wolin	exit under construction as part of Dargobądz - Troszyn section Zachód means west
					7	Wolin Wschód	DW 111 –Goleniów	exit under construction as part of Dargobądz - Troszyn section Wschód means east
					—	transition from national road	DK 3 /E65	Northern endpoint of expressway section
					8	Parłówko	DW 107 –Kamień Pomorski DW 108 –Golczewo/Płoty Ostromice
		Gmina Przybiernów			9	Brzozowo	Brzozowo
					10	Przybiernów	Przybiernów
					11	Babigoszcz	Babigoszcz
		Gmina Goleniów			12	Miękowo	Miękowo/Stepnica
					13	Goleniów Północ interchange	S 6 /E28 –Gdańsk/Solidarity Szczecin–Goleniów Airport	Northern End of concurrency with Expressway S6 (temporary) modified trumpet interchange planned extension of Expressway S6 will end here Północ means north
					14	Goleniów Zachód	DW 111 –Recław Goleniów/Święta	Zachód means west
					15	Goleniów Południe	Rurka/Goleniów/Lubczyna	Południe means south
					16	Kliniska	Stawno/Kliniska Wielkie
					17	Rzęśnica	DW 142 –Chociwel
					—	—	A 6 /E28 S 3 /E65	Southern End of concurrency with Expressway S6 (temporary) Road continues ascommon section of A6 autostrada and expressway S3 with kilometrage of A6
		Szczecin			6	Szczecin Dąbie	Szczecin-Dąbie/Szczecin-Wielgowo	Exit number part of A6 autostrada
					5	Szczecin Kijewo interchange	DK 10 — Szczecin-Centrum/Lubieszyn/Bydgoszcz	Exit number part of A6 autostrada cloverleaf interchange planned Expressway S10 will start here Centrum means center
					4	Szczecin Podjuchy	Szczecin-Podjuchy	Exit number part of A6 autostrada
					18	Szczecin Klucz interchange	A 6 /E28 — Szczecin-Gumieńce/Kołbaskowo/Berlin	Southern End of concurrency with A6 autostrada Semi-directional T interchange
		Gmina Gryfino			19	Gryfino	DW 120 —Gryfino/Stare Czarnowo
		Gmina Banie			20	Pyrzyce	DW 122 —Pyrzyce/Krajnik Dolny
		Gmina Myślibórz			21	Myślibórz	DK 26 —Myślibórz/Krajnik Dolny
	Lubusz Voivodeship	Gorzów Wielkopolski			22	Gorzów Wielkopolski Północ	DW 130 —Dębno/Gorzów Wielkopolski-K-S SSE/Gorzów Wielkopolski-Centrum	Północ means north Centrum means center
					23	Gorzów Wielkopolski Zachód	DW 132 —Kostryn nad Odrą/Gorzów Wielkopolski-Centrum	Zachód means west Centrum means center
					24	Gorzów Wielkopolski Południe	DK 22 — Gorzów Wielkopolski-Centrum/Wałcz/Gdańsk/Kostryn nad Odrą	Południe means south Centrum means center
		Gmina Skwierzyna			25	Skwierzyna Zachód	Skwierzyna/Deszczno DK 24 — Kostryn nad Odrą	Northern End of concurrency with national road 24 Zachód means west
					26	Skwierzyna Południe	Skwierzyna DK 24 —Poznań	Southern End of concurrency with national road 24 Południe means south
		Gmina Międzyrzecz			27	Międzyrzecz Północ	Międzyrzecz	Północ means north
					28	Międzyrzecz Zachód	DW 137 — Międzyrzecz/Sulęcin/Trzciel	Zachód means west
					29	Międzyrzecz Południe	Międzyrzecz	Południe means south
		Gmina Świebodzin			30	Jordanowo interchange	A 2 /E30 —Świecko/Poznań	interchange equipped with toll station double trumpet interchange
					31	Świebodzin Północ	Świebodzin/Świecko/Poznań with access toDK 92	Północ means north
					32	Świebodzin Południe	Świebodzin/Krosno Odrzańskie (southbound) DK 92 — Świebodzin/Świecko/Poznań (northbound)	Południe means south
		Gmina Sulechów			33	Sulechów	DK 32 — Poznań Sulechów/Cigacice	Northern End of concurrency with national road 32
		Zielona Góra			34	Zielona Góra Północ	DK 32 —Zielona Góra-Strefa Aktywności Gospodarczej, Centrum, Osiedle Pomorskie/Gubinek/Krosno Odrzańskie	Southern End of concurrency with national road 32 Północ means north Centrum means center
					35	Zielona Góra Południe	DW 282 — Zielona Góra-Racula/Zielona Góra-Stary Kisielin	Południe means south
		Gmina Otyń			36	Niedoradz	Niedoradz/Otyń	Incomplete junction: no exit ramp Legnica → Niedoradz; no entry ramp Niedoradz → Legnica
		Gmina Nowa Sól			37	Nowa Sól Zachód	DW 297 —Nowa Sól/Kożuchów K-SSSE Nowa Sól DW 315 —Wolsztyn	Zachód means west
		Gmina Nowe Miasteczko			38	Nowa Sól Południe	DW 333 —Nowe Miasteczko/Nowa Sól Bytom Odrzański/Kożuchów	Południe means south
					39	Nowe Miasteczko	DW 333 — Nowe Miasteczko/Miłaków
	Lower Silesian Voivodeship	Gmina Gaworzyce			40	Gaworzyce	Gaworzyce/Kurów Wielki
		Gmina Radwanice			41	Głogów Zachód	DK 12 —Głogów/Leszno/Żary	Zachód means west
		Gmina Jerzmanowa			42	Głogów Południe	DW 329 — Głogów	Południe means south
		Gmina Polkowice			43	Polkowice Północ	Polkowice/Chocianów	Północ means north
					44	Polkowice Południe	DW 331 — Polkowice/Chocianów	Incomplete junction: no exit ramp Zielona Góra → Polkowice; no entry ramp Polkowice → Zielona Góra Northern endpoint of the stretch with three lanes per carriageway Południe means south
		Gmina Lubin			45	Lubin Północ	Lubin-Stadion/Rawicz/Góra with access toDK 36	Southern endpoint of the stretch with three lanes per carriageway Północ means north
					46	Lubin Zachód	DW 335 —Chojnów Lubin-Centrum	Zachód means west Centrum means center
					47	Lubin Południe	DW 333 —Chróstnik/Lubin-Przylesie	Południe means south
		Gmina Miłkowice			48	Legnica Północ	DW 333 —Legnica/Kochlice	Północ means north
					49	Legnica Zachód	DK 94 — Legnica/Zgorzelec	Zachód means west
		Gmina Krotoszyce			50	Legnica Południe interchange	A 4 /E40 —Wrocław/Jędrzychowice/Zgorzelec	double trumpet interchange Południe means south
		Jawor			51	Jawor Północ	Jawor/Nowa Wieś Legnicka	Północ means north
		Gmina Paszowice			52	Jawor Wschód	Jawor/Strzegom/Świdnica	Wschód means east
					53	Jawor Południe	Paszowice/Sokola	Południe means south
		Gmina Bolków			54	Bolków	DK 3 /E65 —Jelenia Góra/Prague DK 5 — Wrocław/Lubawka planned Expressway S5 will end here in a new interchange
		Gmina Kamienna Góra			55	Kamienna Góra Północ	DK 5 —Bolków/Kamienna Góra/Lubawka Północ means north
		Kamienna Góra			56	Kamienna Góra Południe	DW 367 — Kamienna Góra/Wałbrzych/Jelenia Góra Południe means south
		Gmina Lubawka			57	Lubawka	DW 369 — Lubawka/Jelenia Góra
					—	Poland-Czechia border	D 11	border crossing planned Border with Czechia Southern endpoint of expressway
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access       Proposed       Tolled       Route transition

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