Reconstruction of the Obernau lock

Reconstruction of the Obernau lock

Posted by Viktoria Weissenburger, Monday, 1st October 2018 @ 2:59 pm

Basic  project  data 

Project ID: PA1A158
Project website (German): 

Need  and  added  value  for  the  Danube  Region  Strategy

The lock Obernau was built between 1926 and 1930 and thus has reached its theoretical service lifetime of 80 years. The technical construction shows damages at the lock, the weir and the pier and the riverside lock chamber wall is leaking. As early as 1997 an analysis of the structures attested the need for major rehabilitation. In order to ensure the safety of navigation and the functionality of the lock in the coming years, works have to be conducted.

A first study examined the possibility of reconstructing the existing lock while ensuring normal shipping operations. This variant was discarded after extensive analyses. 
It is not possible to bypass the lock, which is why the planning procedure was started to build a replacement construction.


Building of the replacement construction.

The new lock will be built 160m downstream of the existing weir and lock. The lock chamber will have the same dimensions in lenght as the old lock (300m), while the width will be enhanced by 50cm to 12.5m.                                                              

Conducted  and  PLANNED  project  activities

The project will be implemented in 7 building phases.

  • 2017 - 2019: planning approval procedure
  • 2020 - 2022: preparation of construction works
  • 2022 - 2030: Phase 1 - construction of the new barrage
  • 2030: operation of the new barrage
  • starting 2035: Phase 2: partial deconstruction of the old lock (approx. 2 years)

Transboundary  impact

Since it is not possible to bypass the lock, its reconstruction is crucial for navigation along the entire Rhine-Main-Danube axis.

Project  beneficiaries  /  target  groups

waterway users

status  and  timeframe

Start date: 2015
End date: 2030


Total budget: approx. 120 million  EUR entirely funded through national budget

Project  team

Project leader: Wasserstraßen-Neubauamt Aschaffenburg / Germany
Address: Hockstraße 10, 63743 Aschaffenburg / Germany

There are no additional partners involved.

Project  environment

project  cross - reference

eusdr  embedding


eusdr  compliance


meta  data

Data provided by viadonau, based on information from the project website and the TEN-T Corridor Study for the Rhine-Danube Corridor - 25.09.2018

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