| Country: | CZE |
| Type: | D |
| Route: | 3 |
| Map Custom: | yes |
| Length Km: | 70 |
| Length Notes: | Planned: 172km (107miles) |
| Terminus A: | D0 in Prague |
| Terminus B: | S10 border with Austria near Dolní Dvořiště |
| Regions: | Central Bohemian, South Bohemian |
| Cities: | Tábor, České Budějovice |
The D3 motorway (Czech: '''Dálnice D3''') is a highway in the Czech Republic. Currently only the middle segment of the route is in operation; when complete, it will run from Prague via Tábor and České Budějovice to the Czech-Austrian border at Dolní Dvořiště. It is part of the European route E55.
The D3 motorway in the South Bohemian Region towards the Austrian border should be completed by 2026.[1] Completion of D3 in the Central Bohemian Region is planned by 2028, however its designed course through the Lower Sázava landscape is still objected and opposed by environmental and citizens associations.
Once completed, the 172adj=midNaNadj=mid highway will connect the Czech capital Prague with the Austrian Mühlviertel Expressway (S10) to Linz. As of December 2019 only 69.6km (43.2miles) of the highway are in operation, a section from Mezno to Úsilné (near to České Budějovice), while a further 43.7km (27.2miles) from Úsilné to Czechia-Austria border are currently under construction. The most controversial and disputed section is the planned segment in the Central Bohemian Region.
A 24adj=midNaNadj=mid section from Dolní Třebonín to the border with Austria on the other side of the future S10 expressway was initially planned to be built as an expressway (Czech: rychlostní silnice) as well, however on 1 January 2016, the category of expressways (R) was abolished in Czechia, so it is counted as part of the D3 motorway.
| Section | Length | Start of construction | Completion | |
|---|---|---|---|---|
| Praha – Jílové u Prahy | 9,51 km | planned 2026 | planned 2030 | |
| Jílové u Prahy – Hostěradice | 4,49 km | |||
| Hostěradice – Václavice | 11,29 km | |||
| Václavice – Voračice | 16,70 km | |||
| Voračice – Nová Hospoda | 16,45 km | |||
| Úsilné – Hodějovice | 7,2 km | 04/2019[2] | 2024 | |
| Hodějovice – Dolní Třebonín | 12,5 km | 03/2019[3] | 2024[4] | |
| Dolní Třebonín – Kaplice-nádraží | 8,5 km | 02/2022[5] | planned 2024 | |
| Kaplice-nádraží – Nažidla | 12,0 km | 6/2024 | planned 2026 | |
| Nažidla – border with Austria | 3,5 km | 01/2024[6] | planned 2026 |