Ramp Crossover Interchange: Developing the Hybrid Unconventional Interchange

This article presents a framework to develop hybrid unconventional interchange designs. Unconventional and innovative designs are frequently adopted by highway agencies as viable alternatives to improve failing urban cloverleaf and diamond interchanges. Several conventional and unconventional interchange configurations are analyzed, including the modified partial cloverleaf interchange, folded interchange, Diverging Diamond Interchange (DDI) and Ramp Crossover Interchange (RCI). The Maryland State Highway Administration (MDSHA) designed and tested the proposed framework and a case study of the RCI for I-270 at Buckeystown Pike interchange improvement project is presented. The authors review traffic operational, geometric, right of way and economic benefits of the interchange alternatives.


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  • Accession Number: 01484070
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 17 2013 2:16PM