The City of San Marcos is investing their capital improvements funding into revitalizing the Victory Gardens subdivision by widening the streets, adding sidewalks (and lighting for the sidewalks) throughout the subdivision, adding all new utilities (sanitary sewer with new manholes, water distribution, storm sewer), and making drainage improvements. The city also intends to move the electrical distribution for the subdivision underground from overhead poles as part of a beautification effort.
Our team was engaged to provide a full constructability review for all of the proposed improvements (including the electrical transition), a full Class 2 cost estimate for all disciplines of construction, and a construction sequence. Because the neighborhood would require access to all residences at all times for first responders, our team was tasked with identifying the most cost-effective and least impactful process to complete the construction tasks for each street. We presented the idea of using the CIPP method to redo portions of the sanitary sewer line where hydraulics were not affected, thereby requiring the road to be shut down only between manholes. This approach would be far less invasive than excavating a sanitary sewer line nestled twenty-five feet deep in the middle of a twenty foot wide right-of-way, and it would be easier to maintain access within the neighborhood. The client elected to employ the CIPP process, which reduced the budget and allowed the funds to be applied in other places as part of the beautification efforts.
The client asked us to give them a budget on specially designed street signs because each street in the neighborhood was named after a past United States President or other important person in US History. We also coordinated with subconsultants regarding their specific design for street lighting, and we coordinated with San Marcos Electric to determine their phasing and overall construction sequence so our plan could coincide with their intentions.
This project is still in the design phase. The client chose to take the CIPP route to rehabilitate some of the difficult portions of the sanitary sewer system, and that has been under construction for the past few months. Once the CIPP scope has been completed, the engineer will go back through and re-design the portions that need to be designed based on the rehabilitated sections' hydraulics. Once the design is complete, we will re-engage and continue our cost estimating and constructability review.