Operational retrofitting of the Uentrop tunnel in the course of the A46 near Arnsberg in accordance with the valid RABT.

These include, for example:

- lighting

- Safety technology of tunnels, operating buildings and ancillary facilities

Part of this tender is the operational equipment of the Uentrop Tunnel and the associated structures.

In the course of the safety-related retrofitting, an ancillary plant must be retrofitted for the Uentrop Tunnel.

The ancillary facility, including the associated access shafts next to the tunnel portal, will be built entirely in cut-and-cover construction on the existing tunnel structure.

In detail, the following services must be carried out:

Manufacture of the vertical support for the cable ducts 1 and 2

Construct structures of the two cable ducts 1 and 2

Manufacture excavation pit, ancillary plant, compact station and empty conduit routes

Manufacture of structure, ancillary plant, retaining wall for compact station, empty conduit routes

Manufacture breakthroughs through best. Tunnel walls and best. Operating room

Creation of access surfaces, outdoor lighting and access stairs.

Restoring/refilling of the best. Noise barriers