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Świna Tunnel (Świnoujście)

Road tunnel under the Świna in Świnoujście, linking the islands of Uznam and Wolin on national road 93. It is 1,780 m long, of which 1,484 m was bored with a tunnel boring machine and 295 m built by cut and cover. The city of Świnoujście is the investor; GDDKiA acted as substitute investor. A design-and-build contract was signed on 17 September 2018 and the tunnel opened on 30 June 2023. It is not tolled.

Total length
2 km
Open today
2 km
Sections
1
Cost on record
€280.265M
1 of 1 sections carry a comparable figure

Restated into EUR at 2025 prices.

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Sections

Sections of Świna Tunnel (Świnoujście): status, length, dates, cost, funding and contractors
SectionsStatusLengthTimelineCostFundingContractorsContract terms
Tunnel under the Świna

The road is signed DK93 (OpenStreetMap ref 93; pl.wikipedia). Works: the site was handed to the contractor on 10 October 2019 and boring began on 5 March 2021. The 1,780 m is 1,484 m bored plus 295 m cut and cover (pl.wikipedia); a 2019 PortalMorski report gave 1.48 km bored, 295 m cut and cover and 475 m in retaining walls. Total investment cost is given as over 912 million PLN (pl.wikipedia), against 950 million PLN in its infobox, so no outturn is recorded. The 775.6 million PLN EU grant is the 85% share of the 912 million PLN total.

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Opened2 km
  1. Sep 17, 2018Tender awarded
  2. Oct 10, 2019Construction start
  3. Jun 30, 2023Opened
–
  • European UnionEU co-financing of 775.6 million PLN from the Infrastructure and Environment Operational Programme 2014–2020 (POIiŚ); the agreement was signed on 28 April 2017. The rest came from the Świnoujście city budget.
  • PORR – PORR Bau – Gülermak – Energopol-SzczecinBuilder
Contract value zł793.19M

Contractor roles are as recorded in the award. Only builders count toward the delivery rankings.

Funding

  • European Union2 km
    1 section
    • EU co-financing of 775.6 million PLN from the Infrastructure and Environment Operational Programme 2014–2020 (POIiŚ); the agreement was signed on 28 April 2017. The rest came from the Świnoujście city budget.

A section that lists two sources counts its full length under each: the data records which sources paid, not what share each one carried.

Related projects

Sources

  1. Wikipedia (pl): Tunel pod Świnąread Oct 9, 2026
  2. PortalMorski.pl: Więcej o zezwoleniu na budowę tunelu w Świnoujściu i o samej inwestycjiread Oct 9, 2026
  3. OpenStreetMap contributors (geometry, ODbL), way 304973954read Oct 9, 2026