Germany – Engineering works and construction works – Vorbereitung Baulogistik Hollerich

The Waterways New Construction Office Heidelberg plans the replacement of the weir and the establishment of ecological continuity at the Hollerich lock and weir on the Lahn. Due to the topographical situation in the narrow Lahn valley, accessibility is currently strongly restricted. The subject of this tender are the construction preparatory traffic development measures for the supply of the construction site as well as for the later operation of the facilities. The conceptual and innovative optimisation of the existing plans is part of the scope of services. Weg Salscheid The measures initially comprise the construction of the road at Weg Salscheid and the Lahn cycle path. Here, an existing farm track will be upgraded for two-way traffic of heavy construction traffic over a length of approximately 5 km. This includes the creation of passing places, waiting areas and construction site set-up areas. While the first asphalted section from the Singhofen roundabout remains at approximately 850 meters, the following section up to the Lahn cycle path will be fundamentally upgraded to a width of 3.50 meters. This requires an exchange of the subsoil of 40 centimeters, widening of the carriageway in bends and slope stabilisations at deep cutting slopes. In addition, the affected section of the Lahn cycle path, approximately 240 meters long, will be asphalted in its existing condition and also widened to 3.50 meters. Lock Bridge Furthermore, the construction of the lock bridge is part of the scope of services. This includes the design and execution planning based on the pre-concept as well as the new construction of a bridge for the traffic development of the central island over the lock canal. This includes the necessary ramps, slope stabilisations, slope stabilisations and the connection to the existing road network. Also included are all structural details such as construction joints, bearings, sliding plates and seals as well as the technical equipment with cable ducts, empty pipes, railings and lighting. Crane positions Additionally, the contract includes the creation of two new mobile crane positions for vehicles with up to five axles at the upper and lower head of the existing lock. This requires the creation of suitable access roads with connection to the Lahn cycle path. At the crane position on the upstream side, additional geotechnical strengthening measures are required to secure the canal slope of the lock canal. Further components of the contract include the exploration of unknown media lines by means of search slots as well as their relocation and securing.