About 42 percent of the work on the new locks for the Panama Canal expansion has been completed, the Miami Herald reports.
The locks are the most costly and complicated part of the $5.25 billion project to expand the nearly century-old canal to handle larger vessels.
Most of the rest of the canal renovation, such as the deepening and widening of the channels along the original route of the canal and construction of the new access channels, is finished or nearly finished. Dredging of Culebra Cut, the narrowest part of the canal, was completed in March.
Work on the expansion is about eight months behind schedule, mainly because the international consortium working on the locks did not initially get the concrete mix right. Heavy rain and a few strikes have also set the work back.
The expansion is scheduled for completion in mid-2015.