germany-frankfurt-on-main: architectural, engineering and planning services./ sü 5050 km 51.778 hofer bridge & sü 5903 km 124.946 thomas bridge- lph 1+2 and - lph 3+4 optional./ the subject of this service request is the planning of the sü hofer bridge, route 5050 km 51.778 and thomas bridge, route 5903 km 124.946 ( planning, structural engineering and traffic facility planning). the planning of lph 1+2 should be firmly assigned, lph 3+4 is only tied as an option.