Open-cut sewer construction ahead of liner works 2027

Summary

The City of Bonn is procuring a 2027 annual contract for preparatory open-cut sewer works ahead of liner rehabilitation at around 15 sites across the city. The scope includes approximately 400 m of sewer renewal in DN 300–600, new or renewed manholes, about 60 manhole covers and 60 road gullies with connecting pipes, together with excavation, utility protection, reinstatement of road and pavement surfaces, surveys and leakage testing. The work also covers sewer connections and temporary pumping or bypass arrangements as needed; individual measures will be commissioned separately. No lots are provided for.