Experimental assessment of the condition of Karelia roads exposed to the active logging transport traffic

The vast majority of wood in the Republic of Karelia is transported by logging trucks and about 85% of the transportation is performed on public roads. Being a heavy vehicle, a logging truck has a significant impact on the road condition. This impact is especially strong during the spring and autumn periods, when the roadbed soil is waterlogged and has lost part of its bearing capacity. During these periods the road surface is subjected to the greatest damage; its pattern requires studying to plan and organize timely repairs. The transportation network of public roads is an integral part of the logistics chains of the regional forest industry and its condition also significantly affects the efficiency of logging in general. The article considers the results of diagnostics of the highway network state in the Republic of Karelia for the presence and dimensions of defects. The authors analyzed the results of quantitative assessment of various destructions and the causes of their occurrence. Also they determined the length of roads in normative and non-normative condition.