Together these two expressways will be 12 km in length with 9 km underground. Construction due to commence 2001 for completion of Kallang in 2005 and Paya Lebar in 2006. Fifteen companies have prequalified to tender for four contracts with a value US$500 million. Contract 421 is for design and construction of a tunnel from East Coast Parkway to Nicoll Highway crossing the Geylang river; contract 422 is for a tunnel from Nicoll Highway to Pan Island Expressway; contract 423 is for a tunnel from Pan Island Expressway to Paya Lebar Road crossing Pelton Canal; contract 424 is for a tunnel and depressed road with surface road from Paya Lebar Road to just north of the Bartley Road extension. More from www.lta.gov.sg/projects August 2000. Contractors shortlist includes overseas contractors Daewoo, Sato Kogyo, Dumez GTM, Penta-Ocean, Kumagai Gumi, Hyundai, Obayashi, Wayss & Freytag, and Impregilo. Local companies include Semb-Corp, Chew Eu Hock, L & M, Koh Brothers, Lum Chang and Econ Piling. Visit www.lta.gov.sg/projects Sept 2000. Contract 421 worth S$235 million secured by SembCorp Engineers and Constructors for the design, construction and completion of the 1.5 km tunnel from East Coast Parkway to Nicoll Highway. Cut-and-cover method. Visit www.lta.gov.sg 43/01. Contract 422 for the design, construction and completion of 1.64 km of tunnels from Nicoll Highway to the Pan Island Expressway (PIE) clinched by a jv of SembCorp Engineers and Constructors Pte Ltd and Daewoo Engineering & Construction Co Ltd. The tunnel will cross under Nicoll Highway, Mountbatten Road, Geylang Road, Sims Avenue and the PIE. Cut-and-cover method. Value of approximately $257 million. Visit www.gov.sg/lta 52/02. Contract 423 has been awarded by the Land Transport Authority to Samsung Corporation for the design, construction and completion of 2.96 km of tunnels from the Pan-Island Expressway (PIE) to Ubi Road 2. The tunnels will be constructed by the cut-and-cover method and will run beneath the Pelton Canal and Airport Road, crossing Aljunied Road, Merpati Road and Paya Lebar Road. Value $364 million. Work to begin later this month for completion in February 2007. Visit www.secc.co.kr and www.lta.gov.sg 28/02.Contract 424 has been commissioned to Taisei of Japan for the design, construction and completion of 2.6 km of tunnels from Ubi Road 2 to Defu Lane 3. The tunnels will also be constructed in cut-and-cover, running beneath Airport Road, Paya Lebar Air Base before surfacing at Defu Lane 3. Value $251 million. The project is due to be completed in early 2007. Visit www.taisei.co.jp 28/02.Mott MacDonald has been appointed by contractor Samsung to provide full detailed design services for a £137 million underground section of the Kallang-Paya Lebar Expressway, as part of Contract 423 which comprises a 2.9 km tunnel, two ventilation buildings, five slip roads, two road bridges and an interchange. The 36 m-wide cut-and-cover tunnels will run below a 27 m-wide stormwater canal. Designs will be finalised in one year and the expressway is scheduled to be completed by 2005. Visit www.mottmac.com. 33/02.