In work zones where space for placing temporary concrete barrier is very limited (such asbridge expansion or repair), the barrier must be restrained to prevent large lateral deflection dueto vehicle impact. This paper presents the development and testing of a restrained F-shapetemporary concrete barrier that has very limited deflections. Additionally, two transitions weredeveloped for use with the restrained barrier – a transition from freestanding F-shape to therestrained barrier, and a transition from the restrained barrier to a rigid concrete barrier. Detailsof the development and crash testing of these transitions are also presented in this paper. Therestrained temporary concrete barrier and its transitions were developed using a simple pinneddownanchoring method. Steel pins are simply dropped into inclined holes that start from the toeof the barrier and continue short distance into the underlying bridge deck or concrete pavement,thus locking the barrier in place. The drop-pin method makes it very easy to install the barrier,inspect for proper installation, and remove or relocate the temporary barrier in a work zone. Thepinning method also results in minimal damage to the underlying bridge deck or concretepavement. This makes it more desirable to use as opposed to some anchoring systems requiringthrough-deck bolting, which results in greater concrete damage and is difficult to install andrelocate.
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