📋 Tender Overview
Scope : Traffic Signal Intersection Reconstruction
PROJECT DESCRIPTION/JUSTIFICATION : This project provides for the reconstruction of one intersection in the downtown every two years. New findings have prompted the City to accelerate this program. Much of the underground galvanized steel conduit and wiring is in excess of 25 years old and is in need of replacement. Many times when repairs are needed the conduit at the intersection is corroded to the extent that new wiring cannot be pulled through; thereby requiring several spotted areas of conduit to be removed and replaced each year. Anchor bolts and bases are often times corroded or rusted off, requiring new foundations and equipment during which time the signal remains down or in an "all red" flash status. New findings this year have demonstrated a potentially urgent situation. Mastarms that were installed in the early 1980’s as part of a major signalization effort are now in need of replacement. Most of these poles are the white painted signal poles in the area of White, Main, Elm, Iowa and Bluff Streets. These poles and transformer bases are rusting from the inside out and it was found that many of the transformer bases looked adequate from the outside but were nearly completely rusted through. Many additional intersections are in need of rebuilding. New mastarm equipment is fully galvanized with many of the attached parts composed of plastic, aluminum or stainless steel which virtually eliminates this type of corrosion problem. These newly rebuilt intersections will include standard ITS equipment. Future high priority intersections in the downtown include Iowa at 7th, Bluff at 9th, Bluff at 10th, 14th Street signals west of White, Charter at Locust and various improvements in the 1-way to 2-way corridors.
