Nadia Schweisthal

Nadia Schweisthal serves as a Professional Engineer I within the Illinois Engineering Agency, where she plays a pivotal role in the technical evaluation and procurement of civil infrastructure projects. Her responsibilities include leading the acquisition process for engineering services and construction contracts related to water, sewer, transportation, and stormwater systems. She ensures that procurements align with state engineering standards and agency priorities such as aging infrastructure rehabilitation and combined sewer overflow mitigation. Nadia is deeply involved in the technical scoping, solicitation development, and contract administration for complex public works initiatives, bridging engineering expertise with procurement compliance to deliver resilient, long-term public assets. Nadia collaborates primarily with engineering consulting firms and civil construction contractors specializing in water resource infrastructure and utility system upgrades. While no single contractor dominates her portfolio, she consistently engages with firms possessing demonstrated experience in hydraulic modeling, pipeline rehabilitation, and pavement management systems. Her working relationships are characterized by a focus on technical competence, past performance in similar public works projects, and adherence to Illinois Department of Transportation and EPA regulatory frameworks. Nadia’s procurement patterns reflect a strong preference for open competition, with 100% of her acquisitions classified as “No Set-Aside.” She does not prioritize 8(a), HUBZone, or SDVOSB set-asides, instead emphasizing technical merit and capacity to deliver mission-critical infrastructure outcomes. Her approach prioritizes project success over socioeconomic preferences, though she remains compliant with all federal and state small business participation requirements when applicable. Her primary procurement focus lies in NAICS 541330 (Engineering Services) and 237110 (Water and Sewer Line and Related Structures Construction). She routinely procures design-build services, geotechnical investigations, CSO control systems, pipe inspection and rehabilitation, and stormwater management solutions. Nadia’s technical expertise spans hydraulic analysis, utility coordination, and infrastructure resilience planning, making her a key figure in advancing Illinois’ civil infrastructure modernization agenda.