Correct. As Nepean Hwy descends off the southern side of Mt Martha it crosses the freeway. Swing left at the roundabout (straight through is the on ramp) to continue on the highway, past farmlands, vineyards & the drive-in cinema. Pass under the freeway (the 2nd crossing of it), into Dromana and as it veers left at the beach it becomes Point Nepean Rd. Marine Dve is the southern end of what's more familiarly known as the Esplanade around Mt Martha and meets from the right at that intersection.