By the 1960s, the then four-lane Nicoll Highway was found to be insufficient to carry rush-hour traffic. Consequently, an additional carriageway was added in 1965.
As traffic congestion increased in the 1960s, it became apparent that the then-four-lane Nicoll Highway was unable to cope with rush-hour traffic. To alleviate this problem, an additional carriageway was built in 1965.