Project Profile: Southeast Missouri State University Campus Tunnels Renovation Project

Engineering firm: Bernhard
2024 MEP Giants rank: 65
2024 Commissioning Giants rank: 13
Project: Southeast Missouri State University Campus Tunnels Renovation Project
Location: Cape Girardeau, MO, United States
Building type: Educational facility
Project type: Tunnels renovation
Engineering services: Electrical, power; energy, sustainability; fire, life safety; HVAC, mechanical; plumbing, piping; other (utility tunnel assessment)
Project timeline: July 2022 to July 2023
MEP/FP engineering budget: $386,688

Challenges

In 2018, Southeast Missouri State University engaged Bernhard to complete a Utility Tunnel Assessment as well as a Campus Integrated Energy Master Plan. The campus’ underground utility tunnel system includes a total of 66 tunnels spanning more than 2.2 miles, with the oldest tunnels dating back to the early 1900s. The assessment provided the data needed to recommend and prioritize the repair and/or replacement of the tunnel structures and the utility. Fifteen of these tunnels were identified as high priority for repairs and this project updated the initial five tunnels.

Underground utility tunnel system. Courtesy: Bernhard

Partnered with the Lawrence Group, Bernhard TME provided mechanical, electrical, plumbing (MEP) and fire protection engineering services for the repairs/renovations to the University’s Group Housing tunnels. The project included replacing the entire 6-in Fire Main, seismic upgrade for utilities, replacing chilled water service valves, and improving tunnel working environment. The estimated construction cost for this project was $12 million.

Project included repairing damaged piping and insulation. Courtesy: Bernhard

Solutions

The following tunnels were identified as having a high priority for tunnel replacement, renovation and/or repair due to their poor structural integrity and conditions of utilities:

• TU-10 – Normal Avenue Junction to Dearmont (approx. 297 ft): Temporary supports were provided for pipes while structural elements were preserved. The tunnel structure was replaced while utilities remained operational, with piping systems replaced and rerouted. Additionally, broken pipes were repaired, and lighting was installed.

Group Housing tunnel. Courtesy: Bernhard

• TU-14 – Bypass Around Academic Hall (approx. 304 ft): Modifications were made to utilities to accommodate partial replacement of the tunnel lid. Corroded support structures were replaced, and damaged insulation was repaired. Various options were considered for seismic bracing and enhancing working conditions.

• TU-15, 16 and 25 – Serena Building to Academic Hall (approx. 169 ft): Existing pipe racks were modified, and temporary supports were provided during construction. Tunnel structures were replaced while utilities remained operational, and new pipe racks were installed to improve access. Insulation, conduits, and lighting systems were upgraded, with considerations made for seismic bracing and improved working conditions.

SEMO Campus photo. Courtesy: Bernhard

Phase 1 of the project was completed in the summer of 2022 and the phase 2 completed in 2023.

SEMO River Campus photo. Courtesy: Bernhard

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