HELSINKI (AP) — Estonia, Latvia and Lithuania said Saturday they are committed to completing by the end of the decade a financially troubled and badly delayed high-speed rail project integrating the three Baltic countries with the continental European rail network.

Set to link the Baltic capitals of Tallinn, Riga and Vilnius on a new track with passenger trains running at speeds of up to 250 kph (155 mph), the Rail Baltica project was launched in 2014 as a pan-Baltic joint venture with financing primarily provided by the European Union.

Vladimir Svet, the Estonian infrastructure minister, said Saturday after an earlier meeting with the Latvian and Lithuanian transport ministers that “it is still our goal to start passenger and freight train traffic on the entire Rail Baltica route from 2030.”

“However, we still have to keep an eye on the growth of costs and find ways to save money and build more efficiently,” he said in a statement.

While the initial 2010 plan saw the project’s total cost at around 3.5 billion euros ($3.9 billion), a June joint report by auditors from the three Baltic states showcased the venture’s ballooning costs and said the project may need up to 19 billion euros ($21 billion) more funding to be completed.

It is unclear how much the EU, which has identified Rail Baltica as one of the key European transport projects, is willing to inject money into the venture.

Construction of new rail track, running a total length of 870 kilometers (540 miles) from Tallinn, Estonia to Kaunas, Lithuania and onward to the Polish border, started in 2019 but has been marred by delays and disputes between the Baltic governments of the train’s routing.

The venture is running at least five years behind as the first pan-Baltic passenger and cargo trains were supposed run on the new tracks in 2025.

Critics of the project say the meager population base in the Baltics — just over 6 million people live in the three Baltic states — makes the project economically unfeasible for passenger travel and its emphasis should be more on cargo, also a key element in the venture.

Estonia, Latvia and Lithuania, all former Soviet republics, inherited the Soviet rail infrastructure system and the wider Russian gauge of 1,520 mm rails, when they regained their independence in the beginning of the 1990s.

“The Rail Baltica project is a symbolic return of the Baltic States to Europe — until the Second World War the Baltic States were already connected to Europe with 1,435 mm wide (gauge)," the Rail Baltica website says.

“But since the middle of the 20th century the Baltic countries have been mainly linked to an East-West railway axis using the Russian gauge 1520 mm rails,” it said.