A new interchange is being constructed in Jacksonville, Fla., at SR 115, or Martin Luther King Jr. (MLK) Parkway and 21st Street. The full dollar amount of the Florida Department of Transportation (FDOT) project is $30.8 million and the contract went to Archer Western Contractors based in Chicago, Ill. The project manager is Heath Bunn.
Work began in February of 2012, and is currently on schedule for completion at the end of 2013. The scope of work is to provide a direct interchange between 21st Street and MLK Parkway. The new interchange will include five bridges, six ramps, six retained earth walls, six ponds, and three signalized intersections. In addition, JEA water and sewer services will be upgraded.
"Traffic control restrictions require the new SR 115 mainline to be constructed in three phases," said Douglas Cox, assistant project manager of Archer Western Contractors. "This is required in order to maintain two lanes of traffic in each direction. All bridge substructures are built with spread footing foundations on retained earth walls. There are no pre-cast concrete piles. This was done to reduce noise impact to the surrounding neighborhoods."
The new interchange will reportedly allow for easier access to Jacksonville Port Authority facilities, and will improve safety along the parkway.
Material quantities include 27,000 cu. yds. (20,642 cu m) of ready mix concrete, 350,000 cu. yds. (267,594.2 cu m) of embankment, and 4,965 linear ft. (1,513.