From Washington, D.C. –

Take I-395 South, take the VA -27/Washington Blvd/Ridge Rd.exit. Exit #8 Keep right at fork in ramp, and merge…

From Maryland –

Take I-495 towards Northern Virginia.
Take the GW Parkway towards
Washington, D.C. Take the I-395
South Exit, keep right at fork in ramp, and merge…

From Virginia –

Take I-395 North, take the Take the VA-27/Washington Blvd. Exit #8A,
keep left at fork in ramp, and
merge…

…merge onto Washington Blvd. Take the VA-244/Columbia Pike ramp towards Baileys Crossroads. Follow Columbia Pike approximately 5 blocks to Wayne Street. Take a right onto Wayne Street, go one block, then take a left onto 9th Street South. (PSI is located in the 8 story United Bank building)