Sound Study Documents

The following documents were provided by the Jefferson Parkway Public Highway Authority and detail the findings of a sound study showing how Parkway noise may affect Leyden Rock. 

Map showing route of Parkway through Leyden Rock


Map showing sections of roadway


Cross section of roadway segments


Sound impact figures


Showing effect of 6-foot barriers


Showing effect of 8-foot barriers


Showing effect of 10-foot barriers


Showing effect of 20-foot barriers


Showing sound impact without barriers


Barrier height figures in spreadsheet format