From Pittsburgh Airport:

•Follow Parkway West toward Pittsburgh
•Go thru Ft Pitt Tunnel left lane is best
•Exit Tunnel and cross bridge bear left on Rte 279 North
•Take Route 28 North/Chestnut Street Exit #13
•Continue on Route 28 North approx 12 miles
•Take Harmarville Exit #11
•Cross Route 910 onto Gulf Lab Road
•Enter Gate C - Visitor Parking Lot
•Go to Guard House and ask for Microseeps 

From Pennsylvania Turnpike US-76:

•Exit 48 (Allegheny Valley exit, formerly exit 5)
•Bear Right after paying Toll
•Right at 3rd traffic light onto Route 910
•First Right after traffic light onto Gulf Lab Road
•Enter Gate C – Visitor Lot to park
•Go to guard house and ask for Microseeps.

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printable directions