The Jurong East Modification Project (JEMP) was a key infrastructural upgrading project involving the construction of two new platforms and a new track at Jurong East, allowing two trains along the North South Line to enter and depart the station concurrently. Previously, trains had to take turns to arrive and depart from the station using a shared middle track. The new platforms and track allowed for improved NSL frequency between Yishun and Jurong East during weekday peak hours and reduced crowding in trains. Contract 1590 for the design, construction and completion of the new above-ground platform station extension adjacent to the existing station and associated viaducts was awarded to Sato Kagyo Pte Ltd at a contract sum of S$127 million.