Road schemes are linear in nature, which makes the investment process exceptionally difficult and complex, requiring the involvement of large human potential, time-consuming and very expensive. One road investment is subject to numerous consultations, requires many different studies, collecting a huge amount of opinions as well as approvals and obtaining a number of decisions. Currently without including in the project some solutions that would both guarantee minimal influence of the investment on the environment and ensure the efficiency of local ecosystems it is impossible to obtain the positive decision concerning the condition of the environment, which would allow the realisation of the project. An engineer of the 21st century apart from providing the right construction of a given structure, which ensures that this structure is secure, functional, resistant and has architectural merit, must also take into consideration local environmental conditions. The engineer has to ensure that the environment may function without any obstacles and the species may migrate without restraint. To do this, an engineer needs to have clear guidelines concerning both the project and its realisation. The article contains the general form of these guidelines.