Road freight charges between Picton and Christchurch are averaging about 20% higher since last week's earthquake closed State Highway 1 past Kaikoura, forcing traffic to use the longer inland route.
Speculation Pacifica Shipping, the country's only domestic container carrier, was bringing in a second vessel from overseas was firmly rejected by the company yesterday.
Following the multiple mountain landslips and seabed upheavals of the 7.8 earthquake last week, the alternative, inland road route to Picton adds an extra ½two and a-half hours to what was a five-hour trip, and an extra 120km.
Both Road Transport Association NZ and the New Zealand Trucking Association said when contacted the majority of road freighters were charging about 18%-20% more on average for the extra haulage, based on a per kilometre rate and weight.
Neither had heard of any operators ''rorting the system'' with high charges. Road Transport Association NZ chief executive Dennis Robertson said tight competition meant some operators were even offering a lower rate to secure loads.