On Saturday, Aug. 28, Dennis Evanosky will lead a history walking tour along the Oakland Estuary. Meet at 9 a.m. at the intersection of Fernside Boulevard and Versailles Avenue. We’ll walk across the Fruitvale Bridge, along Oakland’s Alameda Avenue to High Street and back to the start. Along the way, Dennis will describe how the estuary was created under the direction of Alameda’s own Hermann Krusi. Pictured here is the first Fruitvale Bridge with the estuary under construction.