The company intends to use the proceeds to pay outstanding debt with Mubadala, among other things.
The future transport and communications minister confirmed that the president-elect will complete the US$3bn project.
Although work on the US$52mn corridor hasn't stopped, the project manager said that construction could be halted by October 19 due to land access issues.
I Squared Capital closes US$7bn global infrastructure fund
President Duque, who took office last month, has claimed that the previous administration did not leave sufficient resources.