The project: The City of McKinney sought to restore eight interconnected silos, originally constructed in 1927 as part of the Collin County Mill & Elevator Company. These structures had remained vacant for decades after the mill closed in
the 1970s but were historically significant as contributing elements to the mill, which was placed on the National Register of Historic Places in 1987. IMEG provided structural engineering services to preserve these iconic silos as part of its downtown redevelopment, ensuring their historical and structural integrity while adapting them for a modern purpose.

The goal: The objective was to restore the historic silos as a landmark and visual backdrop for the city’s new municipal complex while honoring McKinney’s heritage. Beyond preservation, the silos were envisioned as the “canvas” for a large-scale mural that would celebrate the city’s culture and community identity.

The design: The restoration process included a comprehensive structural assessment, development of repair documents, and engineering support during bidding and construction. Over decades of exposure, the silos had suffered from cracked and spalled concrete, corroded reinforcing steel, and deteriorated roofing. Using visual inspections, ground-penetrating radar, and acoustic sounding, the project team evaluated the condition of the silos and devised a restoration plan. Since the silos were no longer intended for grain storage, material strength testing was deemed unnecessary. Key repairs included sealing cracks, reinforcing the roof slab, addressing delaminations, and applying protective coatings to prolong the life of the structures. The restoration also required careful coordination with the artist contracted for the mural, ensuring the structural work did not interfere with the planned artwork.

Challenge: One of the most complex challenges was the deteriorating “doghouse” structure atop the easternmost silos. Solution: Due to its extensive damage, the City determined that full rehabilitation was not cost-effective, opting instead for demolition with the possibility of reconstruction in the future.

The outcome: Despite logistical challenges, supply chain issues, and the difficulties of working around an aging structure, the project was completed on schedule and within budget. The restored silos now serve as a prominent historic and artistic landmark, seamlessly blending McKinney’s past with its evolving downtown landscape. Through preservation and creative reuse, the silos stand as a testament to the city’s commitment to honoring its history while embracing the future.

**Photos provided by City of McKinney