Boschert & Crystal Springs Bank Stabilization
Impacted Wards - 3, 7 & 8
A reach of of Bochert Creek between Kingshighway St. and Pine St. (approximately 1,400 feet) was identified as actively downcutting and widening. The bank erosion is encroaching on residential properties and has exposed a section of sanitary sewer crossings. Several bank sections have been reinforced with gabion baskets or block walls. Perched storm sewer outfalls were noted, with at least one headcutting towards residential properties. A new concrete box culvert was recently constructed at Lindenwood Avenue. The project is anticipated to consist of grade controls, bank stabilization measures, and invasive species management.
A reach of Boschert Creek from 10 Le Chateaux Ct to the railroad tracks near 4 Le Chateaux (approximately 600 feet) has experienced active bank scouring with multiple slope failures. The left bank is steep, high and within close proximity to residences, especially 8 Le Chateaux Ct sanitary sewers within the area are at risk of exposure. The project is anticipated to consist of grade control and bank stabilization measures. Consideration may also be given to channel realignment.
A reach of Crystal Springs between Rio Vista Drive and S River Road (approximately 1,500 feet) is experiencing active widening on the left descending bank. The right descending bank is primarily rock outcropping. The channel bottom has downcut to bedrock. The structure at 301-321 San Juan Dr. and parking lot at 1740 S 5th St. are threatened by bank erosion, as well as sanitary sewer and water infrastructure. A section of sanitary sewer in the left bank near 301-321 San Juan Dr. was previously exposed by bank erosion and an emergency repair was done to prevent further damage to the sewer. There is also a sanitary sewer crossing in the channel with concrete encasement and an exposed water main pipe in the right bank behind 3 San Camille Ct. A new 24'x11' double concrete box culvert was recently construction at Rio Vista Dr. The project is expected to consist of streambank stabilization measures and utility protections and/or relocation.
The projects were identified in the City's Comprehensive Stormwater Master Plan and incorporated into the Long Range Stormwater Plan. The design consultant will evaluate options for creek bank stabilization and the City will select those for final design and construction.
Boschert Creek Bank Stabilization at 4-10 LeChateau Ct, Boschert Creek Bank Stabilization from Lindenwood Ave to Pine
Crystal Springs Creek Bank Stabilization from Rio Vista Dr. to S. River Rd.
- Project charter was approved March 2019
- Field investigations and topographic survey began in June 2019
- Expression of Interest received from 8 firms in late March 2019
- Intuition & Logic was selected to perform engineering design service
- Intuition & Logic submitted alternatives analysis memos for each site in October 2019