Heavy maintenance includes replacement, modernization and improvement works of Motorway structures that can no longer be maintained under the regural maintenance works for various reasons, such as:
- they have reached the end of their life cycle due to wear & tear
- their technology has been outdated and spare parts can no longer be found
- they must be replaced because of changes in the legislation/ regulations
- they need very frequent maintainance which is not cost effective
Heavy maintenance includes works for the renovation/ replacement of the pavement, heavy interventions at structures and building infrastructures as well as the modernization of electromechanical infrastructures and electronical equipment of the Motorway.