The facility is the first to be built in Kenya in the last 80 years.
Experts say the project is likely to destroy the environment, especially mangrove plantations.
Global financiers have pledged grants to be used on road expansion projects.
17 companies had tendered for the project by the October 12 deadline.
The 2,000-km pipeline will be built at a cost of US$3 billion.
The World Bank has already confirmed the release of the funds for this project.
Installation of the security system is set for completion in March next year.
The highway was split into three sections for construction works.
The project is fully-funded by the Kenyan government to the tune of Sh10 billion.
The project begins with building the first three of 32 planned berths at Manda Bay.