 One of the main access points to the park is a bridge that takes Fox River Drive (Ben Street in Plano), over the river, and to an adjoining road (Fox Road) that runs past the entrance to the park.In the 1960s when the current bridge was being constructed, Mrs. Farnsworth appealed to the Kendall County Board, suggesting a block to the bridge, citing ecological concerns among other things.There is evidence that the Fox River valley near Silver Springs was populated by indigenous people near the end of the last Ice Age, 10–14,000 years ago.