South Shore Health is asking people to use extreme caution when visiting Queens General Hospital. The health authority says a combination of snow, ice, mud and construction vehicle traffic has created messy and slippery conditions in the parking lot. Facility Planning Director, Margo Walsh-Leaman, says people need to be careful when they're on the property.Traffic is also being temporarily re-routed at the hospital so an underground pipe can be installed. People are encouraged to follow the designated signs when visiting the hospital.