Lakeside 370 Park is a 300 acre park with a 140-acre recreational lake.  Amenities planned for the park included fishing, non-motorized boating, a canoe channel through a wetland area, family and corporate pavilions, a boathouse, a recreational beach, primitive campgrounds, dog parks, an archery range and an RV park. The Lakeside 370 Park Masterplan was developed in 2005 and established the vision and funding goals for the City.  The Lakeside 370 Park Design began in 2008 and was developed for phased implementation with components designed for the full buildout conditions. Phase 1 included the core park amenities and RV Pod 1 and 2.  Phase 1 was implemented following the design effort and split the work into three bid packages for mass grading and drainage; utilities; and finally paving. Included in Phase 1 was the repair of the agricultural levee that protects the Lakeside 370 Park from flooding along Dardenne, Spencer and Sandfort Creeks.  Design work for Phase 2 began in 2011 and added RV Pod 4 to the park. 



Intuition & Logic& Logic is the project civil engineer teamed with SWT Design as the project architect. Intuition & Logic provided final design and construction documents for grading, utilities, roadways, trails, parking, agricultural levee repairs, site hydrology and drainage, and retaining walls. The lake amenities designed by I&L include shoreline erosion control using native vegetation and sub-water surface grading, breakwater structure to control wave amplification along this mile-long lake, a sea wall protecting the interior of the circular harbor and a floating boathouse/restaurant. Native prairie and wetland vegetation dominate the restoration planting palette to blend with the many existing wetlands and prairie areas surrounding the lake.



The full buildout condition used for the design includes approximately 200 RV pads, a primitive camping area, a beach area, competition sand volleyball courts with concessions, a 3,000+ seat amphitheatre, a boat launch, dog park, adventure playground, archery range, triathlon competition, hiking and biking trails, corporate pavilions, marina, boathouse with café/restaurant, and other City sponsored festivals and activities.



The Phase 1 Bid Package 1 included the mass grading, drainage system, trails and roadway subgrade preparation.  This included 1.68 miles of roadway, 1.37 miles of multi-use paths, a 187 space parking lot, a boat launch, dedicated RV check-in lanes, an 800 foot long marina wall and sleeves for all utility crossing locations. The backbone of the park includes 1.33 miles of paved roads and 0.35 miles of aggregate roads to be paved in a future phase.  A roundabout was designed at the park entrance and will be added in a future phase. 



The Phase 1 Bid Package 2 included all the electric, water and sewer components necessary to open 50+/- pads in the RV Park, the floating boatdock, comfort stations, picnic shelters, primitive camping, boat launch, and parking. This included 2 duplex sanitary lift stations, 2,200 LF of 2” sanitary force main, 30,000 gallon capacity passive sanitary storage tanks, aerators and control system (to be used until a connection to the City sewer system is constructed over the 100 year levee), 2,300 LF of gravity sewer and 5,900 LF of water main. 



Phase 1 Bid Package 3 included all the paving for the roads, trails, parking lots and RV pads.  This included 7,500 SY of asphalt pavement, 8,500 SY of asphaltic concrete RV pod pavement and 2,400 SY of concrete sidewalks, trails and table pads.



Unique design features: Flood Proofing – the entire park is within the 100 year floodplain but is protected by an agricultural levee to approximately a 25 year flood event. During a flood event when the agricultural levee overtops, the park will be subject to over 20 ft of innundation that could remain for several weeks. In order to address this unusual design condition, a number of the park systems have unique design features. For the roadway a subgrade modification was used to create a base for the roadway that will withstand prolonged inundation by floodwaters.  All of the electrical distribution panels were either located on utility poles above the 100 year flood elevation or were designed to have quick releases so the entire panel can be removed from the support strut and loaded into a pickup truck.  The floating pavillion/boatdock is anchored to telescoping piers that can extend vertically 24 feet to allow the dock to rise with floodwaters.  The dock is secured from movement and impacts with steel box trusses and cabling.