TREASURE ISLAND Ė A project to replace two 60-year-old bridges on Treasure Island begins this month and is expected to take about 10 months to complete.
Construction of a new Isle of Palms bridge on 112th Avenue and a new Capri Isle bridge on 116th Avenue is set to begin on Jan. 21. Both bridges will be built simultaneously, one half at a time, with the south sides of the bridges done first, followed by the north side.
Construction of the new bridges will affect traffic coming in and out of 112th and 116th avenues. Two-way traffic will share one lane throughout the entirety of the project.
To ensure an orderly flow on and off the islands with minimum delays, temporary traffic lights on both sides of the bridges will regulate vehicles. To accommodate heavier traffic periods such as morning and evening commutes, there will be adjustments in the timing of the signals. The lights also will include automatic sensors to prevent long backups.
The south sides of the new bridges is scheduled to be completed by May, at which time traffic will be switched over and the north sides of the remaining old bridges will be demolished to allow construction of the second half of the new bridges.
Construction hours are 7 a.m. to 5:30 p.m., Monday through Friday. Work will be performed on Saturdays only when weekday construction is delayed because of weather. A sidewalk will be open throughout the construction for pedestrians and bicyclists.
The new bridges are expected to cost $3.46 million. They are scheduled to be complete and opened to two-way traffic by October.