We are experienced with the planning and design development of Tunnels and Culvert structures. Past tunnel projects have included the famous underground transit station on the corner of Hollywood and Vine in Hollywood, California; the I-90 tunnel through Mt. Baker Ridge in Seattle, Washington, and many freeway interchange tunnels. Culvert structures included stream through-structures or where bridge spans may not be needed. Our latest designs have included crossing structures for wildlife where their migration has created accidents. 2KS Consulting can serve in a supporting role to provide the foundations for prefabricated materials, or provide the complete design, plans and specifications for construction.