Germany – Architectural, construction, engineering and inspection services – Neubau Biologie und 4. Reinigungsstufe, Kläranlage Wildberg Teilprojekt Zufahrtsstraße inklusive Brückenbauwerk und Hochwasserschutz

The measure includes the upgrading of the sewage-treatment plant access road and the traffic optimisation of the traffic areas on the site of the sewage-treatment plant. The upgrading of the sewage-treatment plant access road extends along the site of the sewage-treatment plant on plot 2499/1 – municipality of Wildberg, under the railway line on the route of the Nagoldtalweg/Kengelweg and along plots 1838 to approximately plot 1840/1. In the section along plots 1838 and 1840, a widening of the current approximately 3.50 m wide farm track to 5.50 m carriageway width plus a 0.75 m wide verge on the inside of the bend is planned. The necessary widening affects the Kengelwald (plot 2499). The formation and securing of the embankments constitute civil engineering structures and must be planned including stability proofs. Along the section, several passing places are planned. Some of these already exist and must be expanded or upgraded as needed as part of the measure. To ensure the required passage height under the railway underpass, a lowering of the Kengelweg is necessary. For this purpose, a trough structure in the form of a trough is to be created and the river-side retaining wall is to be renewed. The trough structure also constitutes a civil engineering structure and requires additional structural design planning. In this context, the existing utilities (Schwarzwaldsprudel, main water pipe and power lines) and the mixed water channel must also be taken into account and secured. Both planning services are to be provided. The site of the sewage-treatment plant is divided by the Heiligenbach. The existing bridge over the Heiligenbach must be checked within the scope of the planning with regard to its load-bearing capacity and its structural condition and, if necessary, upgraded. The engineering services required for this must also be provided. In the area of the sewage-treatment plant access road, there are currently insufficient space conditions for manoeuvring larger vehicles. To ensure proper operation, an overhanging widening of the Kengelweg in the direction of the Nagold may be necessary. This measure also constitutes a civil engineering structure and must be planned including the structural design. The traffic planning of the upgrading of the Kengelweg as a traffic route is to be carried out. In addition, traffic planning is also required on the site of the sewage-treatment plant in order to adapt the internal traffic routes, manoeuvring areas and development areas to the future requirements and to ensure a safe and efficient operation.