Tunnels & Underground

At CDG, our structural and civil engineering groups have extensive experience in underground tunnel design, primarily related to sewer tunnel projects. We have done multiple projects for the Metropolitan St. Louis Sewer District (MSD) that involve designing underground tunnels and connecting sewers for efficient and effective conveyance of stormwater.

No tunnel design project is too big or too small, and the team at CDG has designed very challenging alignments of underground pipes that required a “thread the needle” approach to avoid disruption of existing underground utilities, structures, etc. We work with our clients from start to finish and are able to help with every aspect of underground development – from permitting and design to construction and implementation.

In addition to underground development for sewer projects, CDG also provides inspections and structural repair recommendations for underground electrical vaults. If you are looking for an engineering partner to help you achieve superior underground tunnel design, contact CDG today to learn more about how we can help.