Carr Creek State Park in Sassafras, Kentucky, is undergoing a significant wastewater infrastructure upgrade under a design-build contract for the U.S. Army Corps of Engineers (USACE). The original project scope involves replacing a small wastewater treatment plant with a packaged wastewater treatment system, installing a new 2-inch force main, and updating two key lift stations—Marina Lift Station and Laurel Lift Station. However, the project team encountered numerous data gaps due to the park shutting down bathroom and campsite facilities on November 1, right after the design phase kicked off in late October 2024. With no wastewater flow during the winter and a tight schedule to complete design before spring facility reopening, the design-build team was forced to rely on historical records and limited field information. These constraints, alongside the absence of accurate record drawings and unclear pump performance data, prompted a creative reconsideration of project scope. A value engineering proposal was submitted to the USACE, recommending a gravity sewer option that could eliminate the Marina Lift Station and force main by directing flow to Laurel Lift Station. In this presentation, we will discuss how design-build collaboration was essential for gathering field data and conducting site investigations in parallel with design efforts. Permitting requirements—spanning environmental compliance to local approval processes—will also be addressed, highlighting how regulation shaped project decisions. Ultimately, this project showcases the flexibility and responsiveness that design-build delivery can offer in the face of incomplete data, seasonal flow constraints, and the demand for cost-effective solutions. Attendees will learn how proactive communication, shared problem-solving, and innovative engineering strategies enabled the team to stay on schedule for construction in November 2025, while laying the groundwork for a resilient wastewater infrastructure at Carr Creek State Park.