The Damansara–Puchong Expressway (Malay: Lebuhraya Damansara–Puchong) , abbreviated as LDP, is a major controlled-access highway in the Petaling District of Selangor, Malaysia. The expressway runs in a north–south direction between Bandar Sri Damansara and Putra Permai, near Putrajaya, forming a major thoroughfare in the cities of Petaling Jaya and Puchong. A short east–west spur of the expressway connects Pusat Bandar Puchong to the suburb of UEP Subang Jaya. Route description The Damansara–Puchong Expressway begins at the interchange with the Sungai Buloh Highway and Kuala Lumpur Middle Ring Road 2. The Kelana Jaya line, Sungai Buloh–Kajang line and Sri Petaling line runs alongside substantial portions of the expressway. History The construction of the Damansara–Puchong Expressway was awarded to Lingkaran Trans Kota Holdings Bhd (Litrak). On 23 April 1996, the concession agreement was signed between the Government of Malaysia and Litrak for the privatisation of the improvement, upgrading, design, construction, maintenance, operations and management of Damansara–Puchong Expressway. Construction of the expressway began in September 1996 and completed in December 1998. The work was awarded on a turnkey basis (i.e. design and construct) to Gamuda–Irama Duta Joint Venture (GIDJV) at a cost of RM 1.1 billion. The overall cost for expressway is RM 1.4 billion. The expressway was opened to traffic on 25 January 1999. With the completion of the Damansara–Puchong Expressway, the Kuala Lumpur Middle Ring Road 2 was substantially completed on the west of Kuala Lumpur which provides for free flow and ease congestion. It also links Bandar Sunway to Puchong and traveling time is shortened between Petaling Jaya and Puchong. The expressways connects the Putrajaya and Hicom/Shah Alam with the Middle Ring Road. The expressway used to have its own electronic toll collection system known as the "FasTrak". From 1 July 2004, the FasTrak was replaced by the Touch 'n Go and SmartTAG systems. Original routes The construction of the Damansara–Puchong Expressway includes the acquisition and upgrades of several major roads as follows:- Developments Puchong Jaya interchange The upgrading works of the Puchong Jaya interchange including ramp from Bukit Jalil Highway to the expressway began in 2002 and was completed in 2005. Kelana Jaya and Kampung Baru Puchong interchanges The Kelana Jaya interchange which used to be a U-turn junction was completed in 2007. The Kampung Baru Puchong interchange was upgraded from underpass to diamond interchange was completed in 2007. TTDI interchange The TTDI interchange upgrading project is being undertaken