The tolled expressway is a combination of a four-lane dual carriageway (Senai–Cahaya Baru section) and a two-lane single carriageway (Cahaya Baru–Penawar section), which improves road connection between western and eastern Johor.
It features a closed toll system like the North–South Expressway.
It is also an alternative route to Desaru Beach, instead of Federal Routes 3 and 92 from Johor Bahru and Singapore.
The highway has become the main access road to Desaru from North–South Expressway Southern Route E2 and a major road link to Senai International Airport from Kota Tinggi and eastern parts of Johor.
Construction of the road included the 1.7 kilometre Sungai Johor-SDE Bridge, the longest single plane cable stayed bridge in Malaysia across Johor River, which became the longest river bridge in Malaysia after Batang Sadong Bridge in Sarawak.

The section between Cahaya Baru and Penawar is built as a two-lane expressway (except the Sungai Johor-SDE bridge) while retaining the full access control, making the section as the first true two-lane expressway with full access control in Malaysia.

There is a water catchment area located along Sungai Layang sections near the Sultan Iskandar Reservoir.
Senai–Desaru Expressway traverses through the environmentally sensitive water catchment area of Sultan Iskandar Reservoir.
Senai–Desaru Expressway is the only expressway in Malaysia which features the Pollutant Removal System (PRS).
The expressway took one step higher by introducing the PRS to monitor and control any potential impact to the water quality in Sultan Iskandar Reservoir in the event of a spillage of dangerous and hazardous chemicals from any vehicle travelling on the expressway.
The tolled expressway is a combination of a four-lane dual carriageway (Senai–Cahaya Baru section) and a two-lane single carriageway (Cahaya Baru–Penawar section), which improves road connection between western and eastern Johor. It features a closed toll system like the North–South Expressway. It is also an alternative route to Desaru Beach, instead of Federal Routes 3 and 92 from Johor Bahru and Singapore. The highway has become the main access road to Desaru from North–South Expressway Southern Route E2 and a major road link to Senai International Airport from Kota Tinggi and eastern parts of Johor. Construction of the road included the 1.7 kilometre Sungai Johor-SDE Bridge, the longest single plane cable stayed bridge in Malaysia across Johor River, which became the longest river bridge in Malaysia after Batang Sadong Bridge in Sarawak.
The section between Cahaya Baru and Penawar is built as a two-lane expressway (except the Sungai Johor-SDE bridge) while retaining the full access control, making the section as the first true two-lane expressway with full access control in Malaysia.
There is a water catchment area located along Sungai Layang sections near the Sultan Iskandar Reservoir. Senai–Desaru Expressway traverses through the environmentally sensitive water catchment area of Sultan Iskandar Reservoir. Senai–Desaru Expressway is the only expressway in Malaysia which features the Pollutant Removal System (PRS). The expressway took one step higher by introducing the PRS to monitor and control any potential impact to the water quality in Sultan Iskandar Reservoir in the event of a spillage of dangerous and hazardous chemicals from any vehicle travelling on the expressway.
Senai–Desaru Expressway