West Dalton Ranch

Challenge

West Dalton Ranch, a proposed 51-lot luxury subdivision in the Animas River Valley, required high-quality infrastructure that could support growth while preserving the area’s mountain character. Planned six miles north of downtown Durango, Colorado, the project called for roadway upgrades to improve traffic safety and accessibility, along with new infrastructure designed to support a modern mountain community. Situated along County Road 252 (Trimble Lane), a heavily traveled corridor, the design prioritized smoother traffic flow while meeting environmental regulations and maintaining the valley’s sweeping views of the San Juan Mountains.

Solution

To improve access and safety, SEH worked with the developer to design the subdivision and engineer approximately 1,000 feet of County Road 252, incorporating auxiliary lanes to help manage traffic entering and exiting the site. Within the 20-acre property, roughly half a mile of new roadway was constructed to connect homes, parks, and community amenities. In addition to the roadway design, the team planned the overall site layout, integrating grading, utilities, stormwater management, and pedestrian connections to create a cohesive and functional neighborhood. The design emphasized efficient traffic flow, multimodal access, and a seamless transition between the subdivision and the surrounding landscape.

Construction Management and Oversight

Throughout construction, every phase was closely managed to ensure quality results and efficient progress. Regular on-site inspections confirmed work met expectations, while the review and certification of pay applications maintained transparency and accountability. Coordination with utility providers and contractors helped streamline the process and address challenges early, keeping the project on schedule and within scope.

Clear communication and attention to detail defined the entire process. Open coordination among all stakeholders fostered trust, alignment, and a shared commitment to excellence.

Utility and Infrastructure Design

In parallel with construction and roadway work, the project included installing new water, sewer, and dry utility systems to ensure reliable service for every lot. Detailed studies supported these improvements, including a traffic impact study to plan for future growth, and a drainage study to protect against flooding. The team coordinated with the U.S. Army Corps of Engineers (USACE) for necessary wetland permitting and worked closely with the landscape architect to align infrastructure with the community’s visual and functional goals. In addition, four retention ponds were designed to incorporate water quality features that meet EPA, State, and County requirements, resulting in ponds that not only perform a critical ecological function, but also serve as an attractive feature of the development.

Community Benefit

What was once open grassland is now a well-planned residential community supported by dependable infrastructure and improved roadway connections. West Dalton Ranch enhances safety, mobility, and environmental protection while reflecting the natural beauty of the Animas River Valley. The development strengthens the long-term appeal of this growing luxury community nestled beneath the region’s red cliffs.