The Patterson Building

Carroll Engineering provided civil designs under the MSA-BCPS 21st Century Schools partnership for the construction of the new, $95 million Patterson Building. Opened in Fall 2021, the new building combines the Patterson High School and the Claremont School for Special Education into one modern, multidisciplinary facility on 37 acres in Baltimore City. The new school encompasses approximately 266,000 SF with capacity for more than 1,500 students and features a 3-story academic wing and a separate, single-story cafeteria and auditorium wing. Educational facilities include classrooms, state-of-the-art laboratories, shared community spaces, daycare program area, gymnasium, and administrative offices. The project was phased to allow for occupancy of the existing Patterson High School throughout construction of the new building. CEI provided full civil designs for the new building and a variety of outdoor recreational and athletic facilities, including athletic fields, field house, an outdoor playground, and a running track with bleachers.


  • Site designs included bus queuing, student drop-off areas, and a new loop access drive, which serves as the primary route for all traffic and provides two entrances from city roads.
  • Our team provided plans for separate and shared outdoor spaces for both programs, including a new stadium, universally accessible bicycle and walking paths, and the unique Claremont Outdoor Recreational Area, which includes a rubberized infield.
  • With a 22.5-acre area of disturbance, the site required extensive stormwater management and erosion/sediment control to meet environmental standards.
  • This site is adjacent to a brownfields site which had spilled over. Special care was taken in the site design so as not to disturb contaminated areas and to use as much on-site material as possible to cap areas where hazardous zones were found.


  • Project Type:
    Education K-12
  • Expertise:
  • Completion:
  • Architect:
  • Owner:
    Maryland Stadium Authority / Baltimore City Public Schools