Cornerstone Engineering Inc.

Cornerstone Engineering Inc., a minority-owned small disadvantaged business headquartered in Louisville, Kentucky, delivers civil works construction, infrastructure repair, architectural and engineering design, and facility maintenance services to the Army Corps of Engineers and the Department of Interior as a prime contractor (94% of recent awards), with small business set-asides accounting for the vast majority of its portfolio.

Cornerstone's customer concentration is heavily skewed toward the Corps of Engineers. The Department of the Army Corps of Engineers across all districts accounts for 11 of the top-five-customer slots and 99% of combined potential value in the vendor's portfolio. The Engineering District Louisville leads by award count with 10 awards ($10.2 million combined potential value), but the Department of the Army Corps of Engineers portfolio-wide carries $127.2 million in combined potential value across nine awards. The Department of the Interior Fish and Wildlife Service Region 9 anchors the second-largest single-customer position with a $50 million MATOC for architectural and engineering services (2022-2027), under which Cornerstone is executing design work for facility improvements such as Quonset structures at the Erwin National Fish Hatchery. The remaining portfolio spreads across the Department of Agriculture Forest Service Job Corps and smaller Army direct awards, covering 84% of awards and 99% of potential value.

Cornerstone holds five named parent indefinite delivery vehicles. The U.S. Army Corps of Engineers St. Louis District Civil Works and Flood Recovery IDIQ (awarded November 2025, $95 million ceiling, through November 2030) and the Mobile District Civil Works and Construction IDIQ (awarded June 2025, $49 million ceiling, through June 2030) represent the two largest vehicles. A $24 million river bank stabilization MATOC with the Nashville District (awarded March 2023, through March 2028) has funded two substantive delivery orders: the $2.74 million City of Cumberland Looney Creek Channel Widening Project (October 2023) and the $2.99 million Gallatin-East Camp Creek Watershed Flood Risk Management Project (September 2025). Cornerstone also holds a $5 million HVAC repairs and maintenance BPA with the Corps (awarded January 2023, through January 2028) and the $50 million DOI Architecture and Engineering Services MATOC noted above. Recent delivery order work includes the $719,519 Brewster Road repairs project with the Department of the Army (awarded March 2026, completion December 2026, Total Small Business set-aside) and smaller BPA calls for electrical relocation and generator equipment.

Activity has accelerated — one award in 2022, four in 2023, three in 2024, and eight in 2025 — though only one award appears in the first quarter of 2026. Three awards with combined potential value of $3.7 million face ultimate completion within the next twenty-four months, creating modest recompete exposure. Cornerstone's work spans civil engineering construction (Other Heavy and Civil Engineering Construction NAICS accounts for 12 awards), infrastructure maintenance and repair (six awards in equipment repair and maintenance NAICS), architectural and engineering design services (four awards), and specialized mechanical trades including HVAC and plumbing services (three awards). On the subcontractor side, Cornerstone delivered structural analysis work under an Infrastructure Investment and Jobs Act IDIQ held by another prime and performed structural value engineering for an air traffic control tower and base operations complex at Robins Air Force Base under Barge Emersion Joint Venture. The vendor's established track record on large indefinite delivery vehicles with the Corps and DOI positions it as a sustained infrastructure and facility services supplier to those agencies through 2030.

Award winning engineering & construction services including assessment, design/build, addition & modification, repair & strengthening of various facilities, Bridges, Tunnels, Retaining walls, misc construction, concrete, masonry & steel construction, horizontal and foundation, earth work, storm and sanitary sewer & concrete repair construction.

Design/Build/Installation/Maintenance and Training for Collective Protection & Overpressure Protection Systems. Providing Facility Maintenance Services (Electrical, HVAC, Architectural, Generators, Control). Providing Blower Door Testing Services (Utilizing Minneapolis blower door testing equipment) Providing Specialized in-place filter testing & Filter Change outs (HEPA/ Carbon)

With Equipment Service Capability. Building maintenance service. ATFP & UFC design experience. Industry expert in FRP composite strengthening of aging buildings, bridges, tunnels, sewers, water mains and other facilities.