Mott MacDonald offered KD17.8m ($58.3m) for the contract. Its local partner for the project is the Al-Dowailah Engineering Consultancy.
Offers for the project were submitted in September last year.
Five other firms are understood to have submitted an offer for the contract including UAEs Aurecon and KEO, Spains Idom and Sener and Germanys Kling Consult.
Idom and Kling are understood to have been disqualified in the technical evaluation of the offers.
In July last year, the MPW has invited 50 construction companies, including international contractors and their local agents, to bid for the road linking the 4th Ring Road with the southern part of Kuwaits regional road.