# Vltava River infrastructure and engineering > Live situation record from CLSTR: https://clstr.news/situations/vltava-river-infrastructure-and-engineering > Updated: 2026-08-26T04:51:38.000Z. Sources: 7. Developments: 2. Recent developments regarding the Vltava River in the Czech Republic involve both modern infrastructure management and historical engineering context. In Český Krumlov, authorities have implemented a river tube costing approximately 4.2 million CZK to maintain river navigation during a major bridge reconstruction project. This solution allows water sports enthusiasts to pass under the construction site between Tavírna and Plešivec, avoiding the need to transport vessels by land. The broader bridge reconstruction project, aimed at updating a structure from 1963, has a total budget of roughly 119 million CZK and is expected to take 240 days. Historically, the Vltava River near Čertova stěna has been the subject of various unfulfilled engineering proposals. These include a 16th-century plan by Štěpánek Netolický to create a wooden channel for timber rafting and 18th-century designs by Josef Rosenauer to bypass rock formations via paved or excavated channels. These historical attempts were never realized, preserving the area's natural state. ## Timeline ### 2026-08-26: Vltava river historical engineering projects near Čertova stěna Historical proposals to modify the Vltava river near Čertova stěna for timber rafting were never built, leaving the landscape wild. Modern tourism in the region remains shaped by political infrastructure policy 3 sources. https://clstr.news/cluster/vltava-river-historical-engineering-projects-near-ertova-stna ### 2026-08-20: Český Krumlov implements river tube to maintain navigation during bridge reconstruction A special 4.2 million CZK tube has been installed in Český Krumlov to allow river navigation to continue during the 119 million CZK reconstruction of a local bridge. 4 sources. https://clstr.news/cluster/esk-krumlov-implements-river-tube-to-maintain-navigation-during-bridge-reconstruction --- Cite as: Vltava River infrastructure and engineering. CLSTR, https://clstr.news/situations/vltava-river-infrastructure-and-engineering