The busy 13.141 km long bypass starts at Mevaram in the south to Kavanad in the north, via Ayathil, Kallumthazham, Kadavoor and Kureepuzha in Kollam city.

The earlier plan was to construct a bypass road through Kollam city via Olayil, Thevally, Vellayittambalam.

[5] This stretch includes three bridges, five culverts, one vehicle underpass, and five major intersections, and needs to pass over the Ashtamudi Lake.

The two-lane Kollam Bypass road was inaugurated on 15 January by Prime Minister Narendra Modi.

As per the plan, Kollam Bypass would become a four-lane road with overbridges at Mevaram, Kavanad and underpassages at Ayathil, Kallumthazham and Kadavoor junctions.