Soft Shoreline Engineering Case Studies
Stream Crossing at Humbug Marsh Unit - Site #43
Project Goals and Objectives: Build a stream crossing to connect the Refuge Gateway with Humbug Marsh Unit, including the use of vegetated “green” gabion baskets as wing walls to ensure stability and enhance stream bank habitat
Project Description: Project partners installed a four meter aluminum box culvert that included 4 X 3 meter wing walls and planted seedlings of red osier dogwood and black willow to further increase stability and enhance habitat. The crossing’s railing structures were made from an emerald ash borer-affected ash tree from Detroit. Larval Galleries from the Emerald ash borer were left exposed on the handrails to serve as additional educational experience for visitors.
Partners: Navy Seabees, Mid-American Group, NTH Consultants, Logs to Lumber and Beyond, and DTE Energy
Ecological Effectiveness: No Post-project monitoring of ecological effectiveness to date
Restoration Contact: U.S. Fish and Wildlife Service