Optimization of the Layout of Motorway Overpasses on the Example of the A4 Motorway Section Jazwiny – Gora Motyczna

Abstract

The developed, innovative method of estimating the impact of motorway on agricultural land allows determination of all the losses associated with the directions of this impact. The basis for the determination of losses is the analysis of variability in land use and the quality classes and location of access roads to the land along the axis of the planned motorway. The approved measure of the multidirectional impact of the motorway on agricultural land is a change in the value of land, which is determined with taking into account the differences of their suitability for agricultural production. The developed method of determining the impact of motorway on agricultural land was presented on the example of A4 motorway section between Jaźwiny and Góra Motyczna. The existing section of motorway was assessed and then for the same section, the calculations were made again, but with an alternative location of the motorway overpasses (flyovers). In the case of the existing section, the construction of one kilometer of the section of motorway under consideration will result in a reduction in the value of agricultural land of 2119 cereal units. Acquisition of land for the construction of the motorway and its negative impact cover about 78% of the total reduction in value of agricultural land. The remaining 22% of the land value reduction is related to the increase in transport and the deterioration of the plots layout. On the other hand, in the case of the section with alternative arrangement of overpasses, the value of agricultural land is reduced of 2088 cereal units. Acquisition of land under construction and under motorway’s toxic impact will be equal 79%, while the combined effect of transport growth and deterioration of the layout makes 21%.