Viaduct Volmarstein
In the course of the motorway BAB A1 eastern junction Volmarstein, the  replacement new construction of the viaduct Volmarstein is currently  being realized. The viaduct stemming from the year 1959 was originally  planned for four traffic lanes, thereby, with focus on long-term  developments, not being designed for the requirements of today's traffic  situation.
The new bridge will be erected as a prestressed  concrete structure with a total length of approx. 285 m and two partial  structures for the admission of three traffic lanes each and a hard  shoulder. In the summer of 2020, the southern superstructure was taken  into operation, temporarily transferring the traffic from the A1  motorway to six traffic lanes. The production of the  substructures of  the second superstructure is almost finished and the production of the  superstructure with help of a sectional scaffolding has started with the  concrete casting of the first two bars in the last few days.
DEGES  plans and realizes, commissioned by the federal government and the  state of NRW, the construction of a new viaduct. For the executing  bidding consortium, led by the company BeMo Tunnelling GmbH out of  Dortmund, ZPP INGENIEURE, starting from 2019, has been providing the  services of the ZTV-Ing coordination, thereby representing an integral  puzzle piece for the quality assurance concerning the planning design  and the approval of execution documents.