The recent inception of Metrobus, a popular mode of transportation in Lahore, made further improvements necessary at the Kalma Chowk junction.

The Punjab Government considered these public difficulties and decided to construct an underpass from Gulberg to Garden Town, including four signal-free U-turn lanes, to improve traffic flow.

Currently, it is the longest underpass in Pakistan, with a full height of 5.1 meters (17 feet) and a structural integrity capable of supporting light and heavy vehicles alike.

Project planning called for the construction of an underpass with two bores, one for each direction of traffic or carriageway, with ramps of varying length.

[clarification needed] The project involved construction of two bores of varying width along the Barket Market–Liberty Market Road.

A sump pump was installed on the Liberty-side ramp to prevent rain water from flooding the area of the underpass.