Intelligent Transportation Systems in Work Zones. A Case Study. Work Zone Traffic and Incident Management System. Keeping Traffic Moving During Reconstruction of the Big I, a Major Interstate-Interstate Interchange in Albuquerque

摘要

The New Mexico State Highway and Transportation Department (NMSHTD) rebuilt the Big I interchange in Albuquerque to make it safer and more efficient and to provide better access. The Big I is where the Coronado Interstate (I-40) and the Pan American Freeway (I-25) intersect in Albuquerque. The original Big I was designed to support an average daily traffic (ADT) of only 40,000 vehicles and was severely over capacity, experiencing an average of 1.7 crashes per day that were estimated to cost about $12 million annually (data from 1999). ADT in the interchange was approximately 300,000 vehicles prior to its redesign$ the redesigned Big I has a design capacity of 400,000 ADT. The two-year project began on June 30, 2000 and involved 111 lane-miles of construction and 45 new and 10 rehabilitated bridges. For the Big I project, NMSHTD employed ITS in the form of a mobile traffic monitoring and management system to help move the large number of vehicles through the extensive construction area.