The executive cited "personal reasons" for stepping down on Friday.
CAMC Engineering, the biggest infrastructure contractor in Bolivia, saw its former local general manager sentenced to 10 years in prison in a corruption scandal.
During the period the government spent US$673mn on improvements to port access channels.
A list of infrastructure projects drafted by the state include new border facilities, as well as port, airport and railway expansions.
Colombia's finance ministry and financial development institution FDN launched a new financing line in pesos to facilitate investment by foreign entities and banks in infrastructure and particularly the 4G highways.
Lower house lawmakers have filed several impeachment requests and the country's bar association will join the efforts to remove the president from the office.
The fund will invest in public-private partnerships (PPP), which could include highway projects and other types of infrastructure.