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I-95 WIDENING / PAVEMENT REHABILITATION
Johnston County, North Carolina |
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In 1998 Ko & Associates, P.C. was awarded a contract by the
North Carolina Department of Transportation to provide Traffic Control and Pavement Marking Plans for a 3.0 mile section of widening (from four lanes to six lanes) and pavement rehabilitation on I-95 in Johnston County, near Smithfield. The contract was a part of a Limited Services Agreement contract awarded to Ko & Associates, P.C. for on-call traffic engineering design services. The project involved three interchanges and exceeded $15,000,000 in construction cost. Construction was completed in 2002.
Traffic on this major northeast United States to Florida route is heaviest on weekends. As a result, a four-lane, two-way pattern was mandatory from Friday morning through Monday morning each week (and all holidays). The existing concrete pavement was rubblized and overlayed with 8 inches of asphalt surface. With pavement rehabilitation requiring full road closure in one direction at a time, Ko & Associates, P.C. developed a plan of utilizing movable concrete barrier and median crossovers to accomplish the work.
On Monday morning, movable concrete barrier was shifted into the centerline of one direction of traffic and, utilizing a crossover, two-lane, one-way traffic was converted to two-lane, two-way traffic, allowing construction to proceed in the opposite lanes. On Friday, temporary pavement markings were placed on the completed length of rehabilitated pavement, the movable concrete barrier relocated to the shoulder and traffic opened to a four-lane, two-way pattern.
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