![]() So we needed to find a sweet spot where people can climb at a gradient that is not so steep, but also at a comfortable distance.” Mr Wong said: “If we make a ramp very gentle, that means the ramp needs to be very long. To create working space for the construction of this centre column, a section of the expressway towards Tuas will need to be temporarily diverted.Īnother consideration during the design process was the gradient of the elevated ramps, which will reach a height of 14m. What resulted was a refinement of the bridge’s design to one that is more conventional but easier and safer to construct, and also easier to maintain.Īccording to the tender for the PIE bridge, which closes on Oct 30, the centre column of the bridge will be located in the narrow centre divider of the PIE. In 2020, the URA said it needed more time to conduct more in-depth studies on the PIE bridge, citing the complex nature of carrying out construction over live traffic. ![]() All this adds another dimension of complexity to the project.” “There are fibre optics and electrical cables, water pipes and so on. During that stage, we uncovered additional challenges, and we found out more about the underground services at the site. He said: “From then on, the team had to work on the actual structural design of the bridge. He told The Straits Times that the initial focus was on the Bishan-to-city route itself – how best to get pedestrians and cyclists from one point on the Kallang Park Connector to the next, and get around the expressways and major roads interrupting the route. ![]() ![]() Mr Wong Kia Fu, an executive civil engineer at URA, has been working on the PIE link project since it was proposed in 2015. ![]()
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