Montgomery County Jail
Salas O’Brien’s engineering team provided mechanical, electrical, plumbing, and fire protection engineering for an expansion to the Montgomery County Jail in Conroe, Texas.
Our client
Located in Conroe, Texas, the Montgomery County Jail is an extension of the Montgomery County Sheriff’s Office and employs approximately 250 sworn and civilian personnel. The facility houses inmates who are serving time for misdemeanor and felony offenses or who are awaiting sentencing and transfer to the Texas Department of Criminal Justice.
Project highlights
Their challenge
When Montgomery leadership began planning for an expansion to this key facility, they knew they would need an experienced, trustworthy partner to ensure the facility’s engineering needs were met. The project aimed to expand the jail’s capacity—with a scope that included a new kitchen, cell block, and administrative areas. Salas O’Brien was brought in to design the supporting HVAC, lighting, power, water, smoke control, and surveillance systems.
Our solution
Salas O’Brien performed mechanical, electrical, and plumbing engineering for each of the new areas included in this expansion project. The kitchen addition included DX roof-mounted equipment as well as supply and exhaust fans for the exhaust hoods. Our design integrated new panels and transformers into the existing building’s electrical distribution system in order to service the new kitchen and cell block. Our solution also rerouted the main electrical service entrance so that there wasn’t any overlap with the footprint of the new cell block addition, and we routed natural gas to serve heating coils for all new DX roof mounted equipment. Our work also covered the addition of new video surveillance cameras throughout the new areas and their integration into the existing CCTV system.
The results
Thanks to our team’s careful design, the finished kitchen, cell block, and administrative spaces have highly efficient mechanical, electrical, and plumbing operations while maintaining crucial high security.


