Improvement of highway 4 between Vehniä - Äänekoski

The goal of upgrading Highway 4 has been to improve road safety for the connection and to provide for the future needs of traffic by building Highway 4 into a four-lane and semi-central railing. The sizable parallel road arrangements for the entire stretch of highway to a predominantly new location. One new intersection for Hirvaskylä. The share will be linked to four interchanges in the future. Measuring noise control measures, approximately 7 km on a section of noise control structures.