PA-30 Twin Comanche
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Private
Flight Crew Last 90 Days 30; Flight Crew Total 1315; Flight Crew Type 239
Confusion; Situational Awareness
Deviation / Discrepancy - Procedural Published Material / Policy; Ground Incursion Runway
Procedure
By NOTAM checked with flight watch the runway at Bandon State was closed at night. This gave me 40 minutes in the morning to leave the airport on a trip to ZZZ. The runway had markers up at the ends and the taxiway was blocked. The engineer walked the runway with me to be sure it was clean; the X markers were removed and I was told by the engineer the runway was open at which point 1 1/2 hours after I arrived I departed for ZZZ. There was later a call that I had departed from a closed runway.
PA30 pilot reported departing an airport after he believed a NOTAM for runway closure was no longer in effect.