Construction phase in the south-western section
In May 2023, the long-term project was taken over by Autobahn GmbH, South-West branch. It was responsible for renovating the motorway section between the A6 Mannheim-Sandhofen junction and the Baden-Württemberg/Hesse state border. In both directions, 4.5 km of road had to be adapted to meet current traffic safety and noise protection standards. As part of the project, the old road surface was removed and replaced with one that meets current requirements. Since the old milled road surface dates back to a time when tar was still permitted in the production of asphalt, it had to be completely disposed of.
Logistical solution: temporary storage
Given the complexity of the project, the project management team at Autobahn GmbH decided to temporarily store the tar-containing road rubble on a site directly adjacent to the Sandhofen junction. This meant that the subsequent disposal and the associated disruption to traffic could be carried out within the shortest possible time frame. The contract for the necessary logistics and disposal was awarded at the end of August. REMEX SüdWest GmbH was awarded the contract.
Teamwork at its best (v.l.n.r.): Dieter Gerd Valentin, Marcus Rautenberg, José Nebra, Jens Schmitt
Tight time frame
By accepting the contract, REMEX undertook to remove and dispose of 32,000 tonnes of tar-containing material from the A6 construction project within seven weeks and to restore the temporary storage facility afterwards. Such a short time frame meant that up to 1,500 tonnes of material had to be transported away per working day. This equated to a total of more than 1,200 journeys in confined conditions and required road safety measures to be put in place on the Mannheim-Sandhofen slip road. The company’s own fleet of vehicles was also used to allow for greater flexibility in scheduling.
Disposal at ZAK landfill
In addition to the logistical challenges on the construction site, up to 1,500 tonnes of waste per day had to be properly deposited at the Kapiteltal landfill site, approximately 50 km away. ZAK (Zentrale Abfallwirtschaftsgesellschaft Kaiserslautern) is the operator of the landfill site. REMEX entered into a special cooperation agreement with ZAK more than ten years ago. As part of a public-private partnership project, the expansion of the Class I landfill site was jointly undertaken, creating 7 million m³ of new storage capacity. Access to these disposal options ensures that remediation projects such as the A6 remain affordable.
Disposal at the Kapiteltal landfill site
Thanks to a sophisticated logistics concept developed by REMEX SüdWest GmbH, the temporary storage facility at the Mannheim-Sandhofen junction was cleared in just six weeks and restored to its original condition by milling work. > remex-suedwest.de
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