Grodziec Slaski ring road was constructed across new track. It is the part of the Bielsko Biała – Cieszyn clearway. In the neighbourhood of the ring road there is a complex of water bodies. In purpose of protection of animals migration patterns four passages for animals were projected. Their functions are served by flyovers built over flows valleys. Flyovers lenghts come right to 230, 104, 144, 94 meters. Such solution enable the animals to pass across road under flyovers. Animals are guided to flyovers by wire netting which was mounted over half a year after putting investment into use. Additionaly acoustic screen was built along reserve borders. Effectiveness of applied solutions is unquestionable in case of big animals, but applied solutions are not sufficient in a case of little animals. It concerns mainly amphibians which on large scale appear in the neighbourhood of ponds complex and streams valleys.