The original canal was a single-lane waterway with passing locations in the Ballah Bypass and the Great Bitter Lake. It contains no locks system, with seawater flowing freely through it. In general, the canal north of the Bitter Lakes flows north in winter and south in summer. South of the lakes, the current changes with the tide at Suez.
The canal is owned and maintained by the Suez Canal Authority (SCA) of Egypt. Under the Convention of Constantinople, it may be used "in time of war as in time of peace, by every vessel of commerce or of war, without distinction of flag".
In August 2014, construction was launched to expand and widen the Ballah Bypass for 35 km (22 mi) to speed the canal's transit time. The expansion was planned to double the capacity of the Suez Canal from 49 to 97 ships a day. At a cost of $8.4 billion, this project was funded with interest-bearing investment certificates issued exclusively to Egyptian entities and individuals. The "New Suez Canal", as the expansion was dubbed, was opened with great fanfare in a ceremony on 6 August 2015.
On February 24, 2016, the Suez Canal Authority officially opened the new side channel. This side channel, located at the northern side of the east extension of the Suez Canal, serves the East Terminal for berthing and unberthing vessels from the terminal. As the East Container Terminal is located on the Canal itself, before the construction of the new side channel it was not possible to berth or unberth vessels at the terminal while the convoy was running.
Ancient west–east canals were built to facilitate travel from the Nile River to the Red Sea. One smaller canal is believed to have been constructed under the auspices of Senusret II or Ramesses II. Another canal, probably incorporating a portion of the first, was constructed under the reign of Necho II, but the only fully functional canal was engineered and completed by Darius I.