As part of the I-235 reconstruction project, the East 9th St. and Cottage Grove Bridges over I-235 needed to be removed. The concrete box girder structures could not be removed effectively during the normally allotted 20-minute Interstate closures. A special provision was developed to allow I-235 to be closed for one night for the complete demolition and removal of the bridges. One lane in each direction was to be open the next morning with the entire Interstate open early the following morning. Detours were established using city streets to route traffic around the construction site. The Des Moines Police Department (DMPD) had officers stationed at the major intersections to help keep traffic running smoothly. Traffic lights were set to flash to allow the officers to properly control the traffic. Both permanent and movable Changeable Message Signs (CMS's) were used on the Interstate to communicate the Interstate closure to the traveling public. A close relationship with the media also helped to inform the public of the closures.
Expedited Concrete Box Girder Bridge Removals over the Interstate in One-Night Interstate Closures
2002
38 pages
Report
Keine Angabe
Englisch
Highway Engineering , Construction Equipment, Materials, & Supplies , Transportation , Transportation & Traffic Planning , Bridge decks , Girder bridges , Concrete structures , Box beams , Lane closures , Interstate highway system , Removal , Construction sites , Traffic control , Traffic management , Changeable message signs , Iowa , Des Moines(Iowa)
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