That has been due to the slow disbursement of US$250.62 million supplemented for the project because of legal procedures from ministries, agencies and China Eximbank.
The ministry said that it had worked with relevant sites to solve the issue.
So far, Cat Linh-Ha Dong project has completed 95 percent of construction value and capital shortage has delayed the remaining part.
Many items are left half-done including a depot in Ha Dong district, some stations and internal roads.