The Quest For 100-Year Bridge Coatings In Japan

LUMIFLON FEVE Resin, Kiyosu Bridge
Coatings for steel bridges are used to prevent corrosion and subsequent degradation of structural properties. Since the use of zinc rich primers in the 1970’s, it has been a challenge to match the longetivity of the primers with existing and developing topcoats until the early 1980’s with the introduction of Fluoroethylene vinyl ether (FEVE). FEVE resin, a fluoropolymer resin for coatin...

The Story of Hell Gate Bridge And Its Faded Coating

HELL GATE BRIDGE PHOTO BY WIRED NEW YORK
In the early 1990’s, the bridge was completely recoated for the first time in over 80 years using $55 million appropriated by Congress. The color selected for the topcoat was known as “Hell Gate Red” a deep natural red. The coating was a 4-coat system, two of epoxy, a pigmented polyurethane coat, and a clear topcoat designed to preserve the red color of the bridge. Unfortunately, the bridge began to change color even before the repainting was completed.