The plans are part of the county’s budget which is due to be finalised next month.

The cash will primarily pay for improvements to the county’s network of unclassified roads which make up 55% of its network.

Pieter Montyn, Cabinet Member for Highways and Transport, said: “I am delighted to be able to confirm that we plan to spend in the region of £30 million over the next two years as part of the Better Roads Programme.

“This is a really sound use of capital financing because there will be benefits not just in terms of improved roads, but also this investment will help reduce our maintenance costs.

“By putting in place a long term asset management plan that makes our roads more resilient, we can prevent damage, provide greater value for the taxpayer and make managing problems caused by extreme weather easier.

“If we make the extra capital investment now in upgrading road surfaces, it will reduce annual maintenance costs, and prevent deterioration.”

In 2009/10 only 12% of unclassified roads across West Sussex were considered in need of repair.

In 2012/13 that figure had increased to 22%.

Montyn said: “Better roads do not cost as much to maintain and significantly reduce the outbreak of potholes after spells of poor weather.”