Three Jersey Shore beaches in particularly erosion-prone areas will get a $20 million touch-up beginning this week.

Rep. Frank Pallone Jr. said the work is needed to address erosion in areas that were hit hard by Superstorm Sandy and that continue to require maintenance.

Work will begin Thursday in Long Branch, Monmouth Beach and Sea Bright, and will add 1 million cubic yards of sand. That’s enough to cover five football fields with a 100-foot-high pile of sand.

Work on beaches along the state’s entire 127-mile coastline has been carried out for decades but took on greater urgency after Sandy in 2012.

The Associated Press wire services contributed to this report.