In Maryland, bridges, roadways and concrete structures are especially prone to premature deterioration due to the seasonal climate, the proximity to the coast and steady abuse from traffic. Bridges near or along the coasts are more susceptible to chloride ion deposits due to sea salt spray combined with precipitation. With the addition of road salts used in the winter months, these bridges are extremely sensitive to premature corrosion. In fact, the 2017, Maryland infrastructure report card noted that 5.8% of Maryland’s bridges were “structurally deficient” due to aging. It was with this in mind that the Maryland DOT decided to protect a recent bridge rehabilitation project utilizing an SBS modified bitumen waterproofing membrane prior to installing an asphalt overlay.
Tecta America was selected to install the waterproofing membrane. They chose SOPREMA’s ANTIROCK bridge waterproofing membrane due to its successful track record in the northeastern United States. ANTIROCK’s tough, dimensionally stable non-woven polyester reinforcement is the perfect option to withstand the asphalt overlay and the constant abuse of road traffic. Also, the proven track record of SOPREMA’s SBS blend ensures the bridge will remain waterproof for years to come.
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