Teams bored one-third of the corridor to avoid utilities and plowed the other two-thirds. Photo: Ohio Department of Transportation
U.S. Route 33 carries as many as 50,000 vehicles per day through ru- ral and urban settings, including the cities of Dublin and Marysville. Data collected along this limited-access four-lane divided corridor and urban local streets in Dublin and Marysville will allow ODOT and oth- ers to test smart transportation technologies, provide accurate traffic counts, monitor weather and surface conditions, and deliver incident management improvements, ultimately yielding safety benefits to the traveling public. What’s the value in enabling these capabilities? Suppose there is a traffic incident blocking a specific lane along the stretch with CAV services — an alert can be transmitted to the vehicles behind it that there is a lane closed ahead. The cars following could avoid the danger and move to another lane, avoiding a traffic jam or another potential incident. Delivering a fast-track project The project operated on an aggressive schedule — design and fiber in- stallation needed to be finished in about 100 days. Taking an integrated design-build approach, Gannett Fleming, as the engineer of record, and Team Fishel, as the contractor, developed a unique plan to complete this project — the designs were completed in three linear buildable units and one vertical buildable unit.
Typically, most projects are designed in full and then handed off to contractors and clients for review and approval. For this project, the team completed the designs in increments and then passed them on for review and approvals. Once approved, construction would begin on that portion and design would begin on the subsequent step. Gannett Fleming designed these buildable units one at a time in com- pliance with the ISO-9001 certification quality review process. Team Fishel participated in review of the designs and provided comments every step of the way to ensure no time was lost in making revisions. Gannett Fleming then made those changes and submitted the revised plans to ODOT for approval. This process worked effectively and efficiently as it minimized the number of plan review comments from ODOT. It also allowed Team Fishel to become intimately aware of the design that they were go- ing to install, eliminating surprises during cable installation. From the design of the first buildable unit through completion, the teams worked together using this seamless process. Overcoming obstacles As productive as this process was, there were still hurdles to overcome so the teams could complete the project on time and avoid contract disincentives.
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csengineermag.com
march 2018
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