Laiküla Lihula Väike väin Tumala Upa Kuressaare Pärnu County National Road 10 (also known as Risti-Virtsu-Kuivastu-Kuressaare maantee; Risti-Virtsu-Kuivastu-Kuressaare highway) begins from Risti and branches off from the T9.

The Risti-Virtsu-Kuivastu-Kuressaare highway is the only national route to include a ferry crossing (between Muhu island and Estonian mainland).

The road passes through Lääne and Saare County.

The Suur Väin Strait is crossed by a regular Virtsu-Kuivastu ferry, while Väike Väin Strait is crossed via a causeway Väinatamm.

During winter an ice road connects Muhu with the mainland.