The Highways Capital Programme will see £7.5m spent in 2012/13 alone and a further £6.3m in 2013/14.
The Council is putting up £4.5m of this and the Department for Transport has already indicated it will spend a further £4m in 2014/15. The council figure for that year is still to be decided.
The council has now announced the list of projects that are planned for the first year which include resurfacing work at Purbeck Dale and Chiltern Gardens.
Councillor Shaun Davies, cabinet member for Environment, Co-operative Council and Partnerships, said: "Although the winter we've just been through has been comparatively mild, like many local authorities we are still catching up on the damage done to our roads by the previous three years.
"This planned investment over the next three years will see us take significant strides towards improving the quality of the borough's roads and our year one programme covers both residential and principle roads and was developed in consultation with Town and Parish Councils."
Additionally, the council has also been successful in securing £3.5m of direct investment from Central Government via the Department for Transport's Local Sustainable Transport programme.