Illinois Tollway Plaza 37-Maintenance of Traffic

Regina Webster & Associates (RWA) was retained as a subconsultant to A. Epstein and Sons International to develop a Maintenance of Traffic (MOT) plan for Plaza 37 of the Illinois Tollway, where I-294 joins I-55. The Plaza 37 concept plan called for constructing new plaza lanes approximately 100 feet south of the existing plaza lanes, and realigning the plaza centerline by just over two lane-widths to the west. The existing plaza building had to remain in operation while a new plaza building was constructed on the west side of the roadway. The nearby plaza access road and the I-55/Joliet Road entrance and exit ramps to the south, together with the other factors, made the MOT plan for the reconstruction of Plaza 37 extremely challenging. RWA prepared a Maintenance of Traffic plan that met the objective of balancing the plaza capacity with the need to expedite construction of new critical movement lanes. The detailed plan sheets showed a three-stage maintenance of traffic plan with numerous sub-stages, indicating plaza lane closures, temporary work zones with pavement markings and construction signing, and a plan narrative.