The tunnel under the circus at Jalan Bahru (now where Jurong Town Hall Road passes under the Ayer Rajah Expressway) was one of three railway tunnels built for the industrial Jurong Railway Line. The line, built as part of the development of Jurong Indistrial Estate in the mid 1960s, was one of the more profitable sections of the Malaysian run railway and fell into disuse in the early 1990s.
Large parts of the abandoned line have since been built over, although several sections of it, including a series of steel and concrete bridges and sections of tracks can still be found. The tunnels, all of which were constructed by Hong Guan Construction Engineering Co. Ltd. and lined with corrugated steel, are also still around. The westernmost tunnel, now under Jurong Pier Circus (previously the junction of Jalan Buroh and Jalan Pabrik) is difficult to reach. A third tunnel, under Clementi Road, is being extended for the road widening project taking place above it.