Toronto's York Spadina subway extension is running $400 million over budget, according to a new TTC report (PDF).

This isn't the first time we've heard about this six stop, 8.6-kilometre route going over its initial $2.6 billion budget.

For this latest increase, Toronto will likely have to shell out $240 million, while York Region will be on the hook for $160 million.

Back in March 2015, the Toronto Star reported that the extension was $400 million over budget - though the mayor's office wouldn't confirm these numbers at the time.

However, later that same month, the TTC fired two high-ranking managers working on the extension and said the project required a "complete reset" if it was going to be ready by 2017. And, the Transit Commission also announced it needed $150 million more to complete the project on time.

Now, the extension, which runs from the current Downsview Station to York University, is 80 percent complete. The TTC's Andy Byford said it would likely open late next year.

Photo by Tom Ryaboi.