In February 2008, consultants McCormick Rankin Corporation of Halifax released a report on the need for a third harbour crossing, commissioned by the HDBC. The report shows that cross-harbour traffic is nearing the capacity of the existing two bridges, and concluded that a third harbour crossing would be required by 2016–2026. The report suggested either a six-lane bridge, costing $1.1 billion, or a four-lane tunnel, costing $1.4 billion, from the southern terminus of the Circumferential Highway to the CN Rail cut on peninsular Halifax. The bridge option would allow for two dedicated lanes for bus rapid transit (BRT), in keeping with HRM's regional planning goal of increasing public transit use.