 | |
|---|---|
| Stormwater Management And Road Tunnel (SMART Tunnel) Terowong Jalan dan Pengurusan Air Banjir (Terowong SMART) | |
 East Kuala Lumpur map with the SMART Tunnel | |
| Route information | |
| Maintained by Syarikat Mengurus Air Banjir dan Terowong Sdn Bhd (SMART) | |
| Length | 4 km (2.5 mi) |
| Existed | 2003–present |
| History | Construction works started November 2003, and were completed in 2007 |
| Major junctions | |
| North end | Sultan Ismail–Kampung Pandan Link Jalan Tun Razak |
| Sultan Ismail–Kampung Pandan Link Kuala Lumpur Middle Ring Road 1 (Jalan Tun Razak)  East–West Link Expressway Kuala Lumpur–Seremban Expressway East–West Link Expressway East–West Link Expressway | |
| South end | SMART Tunnel toll plaza near Sungai Besi Airport |
| Location | |
| Country | Malaysia |
| Primary destinations | Bukit Bintang Imbi Cheras Petaling Jaya Seremban |
| Highway system | |
 Southbound upper deck of the SMART Tunnel | |
| Overview | |
|---|---|
| Location | Kuala Lumpur, Malaysia |
| Status | Operational |
| Route |  SMART Tunnel E38 |
| Start | Jalan Tun Razak on Kuala Lumpur Middle Ring Road 1 |
| End | Sungai Besi Airport on East–West Link Expressway Kuala Lumpur–Seremban Expressway |
| Operation | |
| Work begun | 2003 |
| Constructed | Gamuda Berhad MMC Corporation Berhad |
| Opened | 2007 |
| Owner | Government of Malaysia Malaysian Highway Authority (LLM) Department of Irrigation and Drainage Malaysia (JPS) |
| Operator | Syarikat Mengurus Air Banjir dan Terowong Sdn Bhd (SMART) |
| Toll | Private cars and taxis |
| Technical | |
| Length | 4 km (2.5 mi) |
| No. of lanes | 4, double-decked |
| Operating speed | 60 km/h |
The Stormwater Management And Road Tunnel (SMART Tunnel), E38, is a storm drainage and road structure in Kuala Lumpur, Malaysia, and a major national project in the country. The 9.7 km (6.0 mi) tunnel is the longest stormwater drainage tunnel in Southeast Asia and second longest in Asia.
The main objective of this tunnel is to solve the problem of flash floods in Kuala Lumpur and 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 is the longest multi-purpose tunnel in the world.
In 2011, the SMART tunnel received the UN Habitat Scroll of Honour Award for its innovative and unique management of storm water and peak hour traffic.
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 (Lembaga Lebuhraya Malaysia, 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 MMC Corporation Berhad (MMC).