Research Pays Off: Second-Generation, Full-Depth, Precast Concrete Deck System: Nebraska Department of Roads Applies NUDECK to Improve Constructability and Cost-Effectiveness

There are a number of advantages to using full-depth, precast concrete deck systems instead of cast-in-place concrete decks in bridge construction. These include improved construction quality, decreased impact on the traveling public, possible weight reduction, and a lower bridge life-cycle cost. However, some of the operations associated with traditional full-depth, composite precast concrete deck systems can complicate the process of fabrication and erection and increase construction costs and duration. This can make precast concrete systems a less attractive solution. This article describes a research project by the Nebraska Department of Roads (DOR) to develop a precast concrete desk system that addresses some of the problems with traditional systems, with a goal of achieving a deck with a service-life expectancy that matches the bridge’s design life. The project proposes the application of the second generation of a precast concrete deck system called NUDECK, the first generation of which was used to construct the Skyline Bridge in Omaha, Nebraska. The article describes the demonstration and tests of the system, details its application in the construction of the Kearney East Bypass, and outlines the new system’s benefits.