LR45 Captain approaching Runway 18 on Taxiway B at ANE using CTAF procedures; is surprised by a Cessna Mustang departing Runway 18. No communication could be established with the Mustang pilot on CTAF after the event.

Narrative

After an uneventful flight; approach and landing on Runway 9; we were taxiing to the FBO when we almost had a collision with a Citation Mustang departing Runway 18. The taxi from our landing runway of 9 to the FBO required us to cross Runway 18 at Taxiway B. The Tower was closed and the weather was IFR at the time. We were making required and extra radio calls on CTAF to notify anyone at the airport of our position. The visibility was around 2 miles in light rain with approximately a 700' overcast cloud deck. Due to trees; we were having a hard time seeing the approach end of Runway 18 as we approached. As we neared the hold short line; we both noticed an aircraft departing Runway 18 at the same time; but he had not made any radio calls on CTAF. We were able to stop our taxi; and did not cross the hold line for Runway 18 so a runway incursion did not occur. We estimated that if we had not stopped in time; we would have been hit on the side of the aircraft as we crossed the runway. We had 4 passengers in the back; and they commented that 'Wow; that was close.' We made several radio calls to the aircraft; but he did not respond. We assume he got an IFR release from departure; and then never switched back to CTAF to broadcast his intentions to takeoff. Our standard operating procedure of making sure we both check each way on a runway before crossing really saved the day.