A pair of regattas means traffic will be detoured along Kelly Drive from Thursday morning until Sunday night.
The standard detour routes, as announced by police, are as follows:
Toward Center City
South up the Strawberry Mansion Drive ramp to Reservoir Drive, south on Reservoir Drive to Fountain Green Drive, west on Fountain Green Drive until it reaches Kelly Drive.
Toward Northwest Philadelphia
East on Fountain Green to Reservoir Drive, north on Reservoir Drive to Strawberry Mansion Drive, north on the Strawberry Drive ramp back to the Kelly Drive.
Detour signs will be posted but, even still, expect delays.