The main objective of this tunnel is to solve the problem of flash floods in Kuala Lumpur and also to reduce traffic jams along Jalan Sungai Besi and Loke Yew flyover at Pudu during rush hour. There are two components of this tunnel, the stormwater tunnel and motorway tunnel.
It begins at Kampung Berembang lake near Klang River at Ampang and ends at Taman Desa lake near Kerayong River at Salak South. The project is led by the government, including Malaysian Highway Authority (LLM) and the Department of Irrigation and Drainage Malaysia (Jabatan Pengairan dan Saliran = JPS) and also a company joint venture pact between Gamuda Berhad and Malaysian Mining Corporation Berhad (MMC).

Stormwater Management and Road Tunnel Sdn Bhd (SMART)
E38 expressway
Length: 4 km
Direction: North-South
Start: Jalan Tun Razak on Kuala Lumpur Middle Ring Road 1
Main destinations:
- Cheras
- Petaling Jaya
- Seremban
- Melaka
- Johor Bahru
- Bukit Bintang
- Jalan Davis
- Imbi

End:Sungai Besi Airport on Kuala Lumpur-Seremban Expressway
Construction dates: 2003 - 2006
Expressway joined:
- Kuala Lumpur Middle Ring Road 1
- AH2 Kuala Lumpur-Seremban Expressway
- Jalan Davis
- Kuala Lumpur Inner Ring Road
- Asian Highway Network:
{{{Asian Highway Network}}}
Technical specifications
Development Cost: 1,887 million RM (514.6 million USD)
Number of lanes: 4 lanes (double-decker)
Interchanges: 3
Toll plazas: 4
Highway tunnels: 4 km
Type of roads: concrete
Toll systems: Open toll systems












