Final construction phase for new sewer
14.02.2024 – Stadtwerke Offenbach's largest underground construction project is now entering its final phase: preparatory work has begun on Mühlheimer Straße to close the last gap in the large wastewater collection sewer connecting Offenbach's new development areas. The closure of two lanes will start on Monday, February 19 and the work is expected to last until the end of the year.
Work is being carried out here in six construction phases between the Kettelerstraße and Karl-Herdt-Weg junctions on behalf of Stadtwerke Offenbach's civil engineering department. One lane in each direction will be closed in sections. Cyclists will have their own protective lane.
Construction project to be completed by the end of 2024
When the last pipes are connected in November, the entire project will be completed after 15 years of construction. Since 2007, Stadtwerke has laid almost six kilometers of sewer with an average diameter of 2 meters in several stages for the new drainage system in Offenbach's soil. The route runs from the Bieber-Nord development area via the An den Eichen residential area and the planned Quartier 4.0 at the former goods station as well as the "Bürgel Ost" development area down to the collector sewer on the Main. From there, the wastewater is expected to flow to Frankfurt's sewage treatment plant from 2025. In total, the construction cost just under 40 million euros gross, with the current and final section estimated at 7 million euros.
Pipes are laid using the open construction method
The first construction phase of the upcoming construction site extends from Mühlheimer Strasse number 133 to the junction with Kettelerstrasse. This time, the pipes are being laid using the cut-and-cover method, i.e. the road is being dug up. On some other sections of the project, work was carried out largely underground using the so-called jacking technique. But even for this, two construction sites would have had to be set up on the carriageways, where traffic would have backed up at peak times. The lane will now be closed for a longer section, but the open construction site will also disappear more quickly.