Bend Park & Recreation District
Construction Materials Testing
Voters in Bend approved Bond Measure 9-86 in November 2012, which funded a $12M dam modification, whitewater features, pedestrian bridge and habitat restoration project directly downstream of the Colorado Avenue Bridge crossing of the Deschutes River. The project was designed to provide a safe passage route for river users over a historic, lumber mill district sheet-pile dam, in addition to constructing a whitewater park with improved fish passage and wildlife habitat. The project includes three channels:
Scope of Work:
Wallace Group was part of the engineering design team tasked with planning, designing, permitting, and constructing a series of complex project elements while maintaining the integrity of the existing dam and Old Mill District river levels. Wallace Group’s range of services included:
Wallace Group engineers performed detailed seepage analysis as part of a critical flow-control cut-off wall design within the island separating the whitewater/habitat channels. Construction began in late 2014 and Wallace Group provided comprehensive geotechnical monitoring, special inspection and materials testing services over a 10-month construction schedule. The in-water work was completed and the whitewater park opened to the public in September 2015. The pedestrian bridge, McKay Park restoration and Deschutes River Trail connections were completed in 2016.
Technical and job-site safety challenges included working in the middle of the Deschutes River with very rigorous environmental and regulatory permit requirements. The seepage and geotechnical analyses required for the mid-channel islands were extremely difficult technical challenges that were successfully met by Wallace Group’s engineering team.
“We’ve used Wallace Group many times over the past 15 years to conduct geotechnical services, special inspections and construction materials testing, and prepare environmental assessments. Their work has always been thorough, reasonably priced, and completed on time.”
Don Horton, Executive Director, BPRD