Evaluating Roadway Subsurface Drainage Practices

Principal Investigator:

April 2009

Report no. 200908TS

Topics: Storm water

Researchers compared the performance of conventional edge drain systems to centerline drainage systems to determine if centerline drainage is a viable alternative to edge drains. The study does not recommend centerline drainage except at the occasional site in which water may rise from below the subgrade into the pavement structure.