Street-level or elevated tracks? Province reviewing options for Calgary's Green Line

As work on the Green Line gets ready to roll again, the biggest question about the LRT project continues to be about its route through Calgary's downtown. A provincial review of alternative alignments through the core is underway after the Alberta government deemed the plan to tunnel too costly. "When you go underground, it's $1 billion a kilometre. If you stay at surface, it's $100 million a kilometre," Premier Danielle Smith said Thursday. "So that's part of the reason why the cost is escalate