Boulder County On-Call Services
Matrix Design Group has provided design services for a variety of roadway and drainage projects that required an immediate response to meet scheduled commitments.
95th Street Reconstruction
Matrix assisted Boulder County with the design of reconstruction of 2.5 miles of 95th Street from Highway 52 to Boulder Creek. The project, which was initially an overlay project, grew to become a total reconstruction project by removing (milling) the existing pavement and reconstructing with 10.5 inch asphalt pavement over six inches of the reconditioned and recompacted asphalt (16.5 inch total section). The existing roadway profile will be elevated, and the intersecting roads and driveways will be reconstructed to match the elevated section.
Matrix completed the culvert replacement and roadway design for upgrading 95th Street at Oxford Road. Drainage improvements included a 10’ x 8’ box culvert to replace a 6’ RCP at Dry Creek. Extensive utility relocations (gas, electric, and water) were required in advance of the culvert installation.
Gold Hill Road Culvert Replacement
Matrix assisted Boulder County with three Gold Hill Road culvert replacements during the summer of 2010, all of which required immediate responses in order to meet the construction schedule. The company’s support in developing sufficient design level plans, supplemental design survey, and construction survey layout was critical to maintaining the schedule for the planned closure of the road. Matrix’s ability to provide survey and engineering design to a 60% design required timely and essential production effort for the transportation and maintenance departments to accept and implement the design.
2011 Minor Structures
Matrix assisted Boulder County with four culvert replacements, three conveying irrigation flows, and one drainage channel. Matrix addressed the ditch company’s design criteria and right-of-way constraints to allow for construction as the irrigation flows subsided.
63rd and Jay Road
Matrix assisted Boulder County with intersection improvements during the summer of 2012, which required immediate responses in order to meet the construction schedule. The company’s support in developing sufficient design level plans and supplemental design survey was critical to maintaining the schedule for the paving of the roads.