Highway Maintenance and Types of Highway Maintenance
Preserving and keeping each type of roadway, roadside, structures as nearly as possible in its original condition as constructed or as subsequently improved and the operation of highway facilities and services to provide satisfactory and safe transportation, is called maintenance of Highways.
Factor Affecting Road Maintenance:
Generally following factors affect the maintenance of pavements.
Increase in the intensity of traffic.
Since we know that there is increase in road transport per year about 8%. Hence this is the most important factor, which affects the maintenance of roads.
Inadequate Thickness of Pavement.
As already discussed adequate thickness of pavement is essential. If the adequate thickness is not provided, it will result frequent pavement failure, unevenness and heavy patches.
Effect on No of lanes.
The road research laboratory has established by experiments that concentration of road is almost 4 times larger on a single lane pavement than a double lane pavement section. Thus the distress and maintenance on single lane pavement are higher than double lane pavements.
Types of Highway Maintenance
Generally following type of maintenance operations are adopted.
Routine or periodic maintenance.
Since all types of highway are exposed to the adverse climate condition and moving traffic, they would positively wear out. Thus for economy, they need maintenance before further deterioration. Under this category of maintenance generally following works are carried out.
Special repairs are carried out for special problems and when occur due to the failure of pavements. Sometimes repairs are needed for some sub surface drainage system and cross structures
However care should be taken about a few things while the construction of the highway. Some are listed below.