CTA PURPLE LINE BRIDGES
Owner: Chicago Transit Authority
In the summer of 2012, three bridges on the Chicago Transit Authority’s Purple Line were found to have deteriorated from age and excessive use. The damage was determined to be irreparable and the structures were torn down. Replacement bridges were constructed offsite and D.S. Brown’s Deckguard waterproofing membrane was applied to the steel deck surface.
Rigorous safety requirements and high temperature conditions made the utilization of spray-on membrane challenging, but the product and its application process proved successful. The use of Deckguard on the bridge decks ensures their protection from water corrosion for 50 years.
D.S. Brown Deckguard Spray Membrane
Deckguard Spray Membrane is a 100% solids two-component, elastomeric coating used to waterproof both steel and concrete bridge decks in highway and rail structures. Applied using plural spray equipment, Deckguard provides a seamless, flexible and extremely durable barrier against water penetration and stray current.
D.S. Brown’s Deckguard Spray Membrane is specifically engineered for use on highway and railroad bridge decks, bridge abutments, pier caps, tunnels and pedestrian walkways. This effective waterproofing membrane can be used on intermodal and LRT rail bridges with or without protection board.