2016-09-26-14028 DDI board Final.jpg

DGL recently partnered with ODOT to construct the new SR 25 Diverging Diamond Interchange (DDI). Because DDI’s are a fairly new concept, and there is currently only one other of its kind in Ohio, DGL had to complete research for their design and plan development. This project was necessary to increase safety and improve mobility at the interchange of SR 25 and I-475/US 23 in Perrysburg. Perrysburg serves a significantly growing community, but is bound on the north by the Maumee River. Therefore, a natural growth has occurred along its southern area and an increased traffic pattern resulting in traffic backups onto the IR-475 mainline and the turn lane storage along SR 25 was insufficient. The construction and completion of this innovative DDI will allow two directions of traffic to temporarily cross to the left side of the road, while moving high volumes of traffic through the intersection without increasing the number of lanes and traffic signals. Additional features will provide a 10’ bikeway along the west side of SR 25 and a 6’ walk along the east side of SR 25. Pedestrians will be protected by the use of jersey barriers on each side of the path while on the bridge. This barrier will have inset lights for pedestrian safety. Slotted holes along the bottom of the barrier will be used for drainage.

DGL received an Outstanding Award for this project at the 2018 Engineering Excellence Awards Ceremony for the American Council of Engineering Companies (ACEC)