OVERLOADED trucks are damaging national highways, says the LTA.
LTA spokesman Iliesa Sokia said the damage caused to roads by overloaded trucks led to higher maintenance and repair costs.
He said government spent millions of dollars annually on road maintenance.
"This is apart from the construction of new roads or capital works it is currently carrying out.
"It is estimated that between $25million and $30million is spent on our roads annually for maintenance purposes, an exorbitant and valuable amount that could be useful elsewhere.
"Overloaded vehicles, especially freight vehicles, are destroying our roads, impacting negatively on economic growth — the damage caused grows exponentially as the load increases.
"Damage to roads as a result of overloading leads to higher maintenance and repair costs and shortens the life of a road which in turn places an additional burden on the state as well as law-abiding road users who ultimately carry the costs of careless and inconsiderate overloading."