D0 Prague Ring Road (Pražský okruh)

Section 510, 1st stage. Construction start (year only), opening date and length are from the cs.wikipedia section table, which lists the exits Satalice (58) and Chlumecká (59) and gives category S 27,5/100. The cs.wikipedia history text says the first sections, Satalice – Počernice (510/I) and Slivenec – Třebonice (515), opened in 1984. The ŘSD 2010 brochure names Stavby silnic a železnic (Hradec Králové branch) as builder and Vojenský projektový ústav Praha as designer, and dates construction June 1980 to October 1984; no cost is published. The line is drawn from the Satalice junction (exit 58) to the Horní Počernice junction (exit 60) and measures 1.00 km. The OSM carriageway continues about 0.7 km north of exit 58 to the Satalice interchange; that stretch is not drawn.

Section 510, 2nd stage. Construction start (year only), opening date and length are from the cs.wikipedia section table, which lists the exits Horní Počernice (60) and Běchovice (63) and gives category S 27,5/100. The ŘSD 2010 brochure names Stavby silnic a železnic (Hradec Králové branch) as builder and Vojenský projektový ústav Praha as designer, and dates construction July 1988 to 1993; no cost is published. The line is drawn from the Horní Počernice junction (exit 60) to the Běchovice junction (exit 63) and measures 2.70 km, 16% more than the tabled length; the recorded length is the sourced one.

ŘSD section 511 (leaflet no. 2, state 03/2026). The leaflet gives a six-lane main route of 12 650 m, category D 34,5/100, starting at the Českobrodská interchange with I/12 at km 64.0 and ending before the Modletice interchange with the D1 at km 76.570, with the Dubeč (232 m) and Na Vysoké (394 m) cut-and-cover tunnels. The tender was launched on 18 December 2023 and drew four bids after the deadline was moved to 18 October 2024. The consortium of Eurovia CZ, Stavby mostů, PORR a.s. and PORR Bau GmbH signed on 3 December 2024. The leaflet states the opening year as 2027; cs.wikipedia, citing the June 2026 leaflet, gives 2028, so no expected opening is recorded. Drawn from the OSM construction ways; the line measures 12.65 km.

Section 512, part of the south-western segment (512, 513, 514) opened on 20 September 2010 and put into regular operation the next day, per cs.wikipedia. Construction start (year only), opening date and length are from the section table (category S 27,5/100; exits Modletice 76 and Jesenice 82). The ŘSD 2010 brochure gives the length as 8750 m and the extent as from before the Modletice interchange with the D1 to behind the II/101 overpass before the planned D3 interchange, so the boundary with 513 is at the D3 interchange near Jesenice, not at Vestec. Builder: Sdružení 512 (Dálniční stavby Praha, Skanska DS, Metrostav, PSVS); the design for the building permit was by Pragoprojekt and Valbek; contract price 4 539 429 350 CZK excluding tax. The line is drawn from the Modletice junction (exit 76) to the D3 junction near Jesenice and measures 7.32 km, 16% less than the recorded length: the 1.4 km between the end of the 511 construction ways and the Modletice junction lies on the D1 and is not drawn.

Section 513, part of the south-western segment opened on 20 September 2010 (regular traffic from 21 September). Construction start (year only), opening date and length are from the cs.wikipedia section table (category S 27,5/100). The ŘSD 2010 brochure gives the length as 8337 m, starting behind the II/101 overpass before the future D3 interchange near Jesenice (so before the Vestec junction) and ending at the Zbraslav interchange at km 9.687. It lists the 236 m Vltava bridge, the Šabatka ecoduct and the Cholupice (Komořany) tunnel (1937 m left tube) in this section. Builder: Sdružení Skanska DS, Skanska BS and Alpine Mayreder Bau GmbH; the design for the building permit was by Pragoprojekt and IKP Consulting Engineers; contract price 4 931 051 720 CZK excluding tax. The line is drawn from the D3 junction near Jesenice to the west end of the Vltava bridge, where the Zbraslav exit (10) leaves the ring, and measures 8.21 km, 2% less than the recorded length.

Section 514, part of the south-western segment opened on 20 September 2010 (regular traffic from 21 September). Construction start (year only), opening date and length are from the cs.wikipedia section table (category R 27,5/100; exits Zbraslav 10 and Lochkov 15). cs.wikipedia lists the Lochkov tunnel (1659 m) and the Lochkov, Slavičí and Radotín bridges in this section. The ŘSD 2010 brochure names the builder as a joint venture of Strabag, Hochtief and a third firm whose name is cut off in the copy, gives Valbek as coordinator of the implementation design and a contract price of 7 448 429 698 CZK excluding tax, and states a length of 6030 m. The line is drawn from the west end of the Vltava bridge to the Slivenec junction (exit 16) and measures 5.98 km.

Section 515. Construction start (year only), opening date and length are from the cs.wikipedia section table (category S 26,5/100; exits Slivenec 16, Ořech 19, Jinočany 21, Třebonice 23). The cs.wikipedia history text says this section opened in 1984, together with Satalice – Počernice; the table date is recorded, and the ŘSD 2010 brochure also gives 09/1983. No contractor or cost is published. The surface was rebuilt carriageway by carriageway before September 2010, and ŘSD has a capacity upgrade of the section in preparation. The line is drawn from the Slivenec junction (exit 16) to the south end of the Třebonice interchange (exit 23, Chrášťany) and measures 6.77 km, 9% less than the tabled length.

Section 516. Construction start (year only), opening date and length are from the cs.wikipedia section table (category R 34/100; exit Řepy 26). The ŘSD 2010 brochure names Sdružení SOKP stavba 516 (Dálniční stavby Praha, Stavby mostů Praha, PSVS) as builder and Pragoprojekt as designer, and dates construction May 1998 to August 2000; no cost is published. The line is drawn from the south end of the Třebonice interchange (exit 23, Chrášťany) to the Řepy junction (exit 26) and measures 3.59 km.

Section 517. Construction start (year only), opening date and length are from the cs.wikipedia section table (category R 34/100; exit Ruzyně 28). The ŘSD 2010 brochure names Sdružení 517 (SSŽ, Metrostav, SMP Construction, Bögl & Krýsl; the list is cut off in the copy) as builder and SUDOP Praha as designer, and dates construction May 1999 to October 2001; no cost is published. The line is drawn from the Řepy junction (exit 26) to the end of the opened carriageway north of the Ruzyně junction and measures 2.27 km. The ŘSD 518 leaflet states that km 27.913 to 29.990 of the ring will be built under the D7 project MÚK Ruzyně – MÚK Aviatická, so a gap of about 2 km separates this lot from lot 518.

ŘSD section 518 (leaflet no. 506, state 01/2026), in preparation. It starts at km 29.990 at the Přední Kopanina interchange with the D7 and ends at km 38.250 behind the Rybářka interchange, 8260 m in category D 34/100, with the Horoměřice, Suchdol (1970 m) and Rybářka tunnels (3450 m in total). The EIA opinion was issued on 2 September 2024; the joint permit design is due in the second or third quarter of 2026. The leaflet plans the start of the works for 2028 and opening for 2031, years only. Ring km 27.913 to 29.990 between Ruzyně and Přední Kopanina is to be built under the D7 project MÚK Ruzyně – MÚK Aviatická. The design was prepared by Pragoprojekt. Drawn from OSM highway=proposed ways between the D7 junction and the Vltava; the drawn line measures 7.91 km, 4% less than the leaflet.

ŘSD section 519 (leaflet no. 504, state 01/2026), in preparation. It starts at km 38.250 before the Vltava bridge (572 m) and ends at km 45.100 at the Březiněves interchange with the D8, 6850 m in category D 34/100, and includes widening the Prosecká radiála at that interchange to motorway standard. The EIA opinion was issued on 2 September 2024. An architectural competition for the Vltava valley bridge drew 15 entries by 28 February 2025; one for the Drahaň valley bridge was launched in October 2025. The leaflet plans the start of the works for 2028 and opening for 2031, years only. The EIA and technical study were prepared by AFRY CZ. Drawn from OSM highway=proposed ways, from the Vltava to the crossing with the Prosecká radiála (D8).

ŘSD section 520 (leaflet no. 503, state 03/2026), in preparation. It starts at km 46.410 at the Březiněves interchange with the D8 and ends behind the Satalice interchange, 13 643 m in category D 34/100, with the Třeboradice (1330 m), Veleň (1000 m) and Vinoř (2710 m) tunnels. The EIA opinion (both variants) was issued on 31 January 2025, and in July 2025 the government chose the tunnel variant. A contract for the design for the joint permit with Pragoprojekt and AMBERG Engineering Brno was concluded in September 2025, and land purchase is expected to start in 2027. The leaflet plans the start of the works for 2028 and opening for 2031; cs.wikipedia, citing the June 2026 leaflet, gives 2029 and 2032, so no expected opening is recorded. Drawn from OSM highway=proposed ways from the crossing with the Prosecká radiála (D8) to the end of the proposed ways at Satalice, so it also covers the 1.3 km between leaflet km 45.1 and km 46.41. The drawn line measures 12.97 km, 5% less than the leaflet.