Single Point Urban Interchanges (SPUI)
I-55 & Damen Ave Interchange
Chicago, IL
Vinod was Project Manager for Phase II design engineering for staged reconstruction of the I-55 expressway mainline from Western Avenue to Wood Street, as well as the Damen Avenue interchange. The existing expressway was replaced with pavement on embankment at a lowered profile. Reconstruction of the expressway included demolition of the existing structures, ground improvement with dynamic compaction, placement of new embankment, and
construction of the roadway pavement.
The Damen Avenue Interchange, including four access ramp structures, was reconstructed as a Single Point Urban Interchange for improving the interchange traffic capacity.
Photo: EXP
I-80/94 & Torrence Ave.
Lansing, IL
Vinod was the Project Manager for Phase II engineering for the reconstruction and widening of approximately 1.5 miles of I-80/ IL 94 Expressway and about 1 mile of IL 83, and relocation of Frontage roads along both sides of expressway.
The scope of included widening the expressway from 6 to 11 lanes to improve capacity and safety; raising the expressway out of the flood plain; widening of IL 83 to eight lanes through the interchange area; reconstruction of the Torrence Avenue interchange as a Single Point Urban Interchange; reconstruction of Railroad Avenue and Burnham Avenue bridges; construction of about 3 miles of retaining walls and noise barriers; new high mast lighting, expressway signage, and drainage systems; and construction staging and maintenance of traffic.
Photo: EXP
US-20 over McLean Blvd.
Elgin, IL
Vinod was the Project Manager and Sealing Structural Engineer for Phase II design engineering services for complete reconstruction of 1.33 miles of US 20, 0.6 mile of McLean Boulevard and replacing the existing diamond interchange with an at-grade Single Point Urban Interchange (SPUI).
The unique feature of the project is new long-span bridge spanning above the at-grade SPUI. The new bridge is on curved alignment and features three long spans at 175’ – 250’- 175’. The bridge is extra wide in order to accommodate 2 lanes and 2 shoulders in each direction separated with concrete barrier wall.
