Route 531 (Hebrew: כביש 531), is a suburban freeway in the southern Sharon region of Israel, just north of the Tel Aviv Metropolitan Area.

In addition, the project includes extending Sharon Railway with a double-track railway, including a long railway tunnel and several passenger stations in the median of the highway along nearly the entire length of the road, using a design similar to that of the Route 431 suburban freeway.

Shapir Engineering initially won the PFI tender to extend the road and railway.

Still, due to financial disagreements and complications caused by the worldwide financial crisis, the government cancelled the PFI tender in the summer of 2010.

Instead, the project was reorganized and funded directly by the treasury and managed by the National Roads Company.