What is the fine-grained topic of the following text: Meydenbauer Bay Park will be the starting point of the Grand Connection, which will be a pedestrian corridor that is planned to extend east through downtown, across Interstate 405 to connect in the Wilburton neighborhood with the Eastside Rail Corridor, a regional pedestrian-bicycle trail. Only return the topic.
The Grand Connection pedestrian corridor plan starting from Meydenbauer Bay Park.