The St. Pauli Elbtunnel was built between 1907 and 1911 and consists of 2 parallel tunnel tubes of approx. 426.5 m in length, the shaft buildings on the north side of St. Pauli and the south side of Steinwerder, as well as the Steinwerder company building. The tunnels were built using the shield tunneling method and consist of steel tubbings with a concrete inner shell. In the area of the walls and the vault this was covered with tiles. Each tunnel has a lane of asphalt and 2 side walkways. The building has been a listed building since 2003.

Rising amounts of leakage water and associated moisture damage as well as the required adaptation of the technical equipment of the structure made a repair necessary. Since 1994, a comprehensive renovation program is running. The rehabilitation of the shaft building and the operating building as well as the rehabilitation of the east tunnel has been completed. Now the basic repair of the western tube is to begin.

The service includes the repair of the western tunnel tube in compliance with the specified schedule and budget and in compliance with the quality of the state of the art in compliance with the monument protection requirements.

The following main services are to be provided:

Technical processing, construction site equipment, ventilation:

- Preparation of execution documents (including static calculations and design drawings), inventory documents, preservation of evidence, documentation,

- carrying out surveying work,

- construction, maintenance and dismantling of the construction site equipment outside and inside the tunnel structure (including drainage work),

- implementation of protection and safety measures, fire protection,

- Construction, provision and dismantling of the ventilation / dedusting plant.

Demolition:

- removal and storage of ornamental and relief tiles as well as partially non-destructive removal of tiles in the area (optional),

- expansion of pipelines, supply and disposal facilities, built-in components and components of technical equipment,

- removal of leaded tiles,

- dismantling of unreinforced concrete body in the upper tunnel cross-section (containing lead and lead-containing corrosion) in the low-vibration demolition process,

- removal and storage of granite curbs for reuse,

- production of separating cuts and dismantling of roadway asphalt (PAH-containing),

- dismantling concrete body in the lower tunnel cross-section - including. Reinforcing iron and pig iron bars in low-vibration demolition process,

- Disposal / recycling of hazardous and non-hazardous building materials Renovation of the tubbing construction :,

- cleaning and substrate preparation of the tubbing surfaces,

- anti-corrosion work on the tubbing construction,

- repair of lead joints,

- coating of lead joints,

- replacement of screw and rivet connections,

- Disposal of hazardous and non-hazardous building materials.

New construction of the upper and lower tunnel cross section:

- shotcrete works,

- Formwork and reinforcement work with special geometric requirements including installation of various built-in parts,

- concrete and reinforced concrete works,

- precast concrete parts,

- processing of special concretes (heavy and WU concrete) with special requirements for pumpability,

- manufacture of drainage and drainage equipment,

- sealing work,

- metal construction / steel construction work,

- Road construction,

- Replacement of existing granite curbs.

Tile work:

- Tiling work on vault, wall and base surfaces of the tunnel. Incl. Installation of relief tiles,

- Monument-appropriate installation of jewelry ceramics.