High Quality Content by WIKIPEDIA articles! Senai-Desaru Expressway, SDE (Malay: Lebuhraya Senai-Desaru) , is an expressway in Johor, Malaysia. It is also part of the Iskandar Malaysia (formerly Iskandar Development Region). It connects Senai in western Johor to Desaru in eastern Johor. The expressway measures a total length of 77 km (48 mi). With a new crossing over the Johor River, when opened on June 10, 2011, it shortened travel time from Senai to Desaru from 2.5 hours to one hour.