Light Transport
Flight Crew Air Transport Pilot (ATP)
Confusion; Situational Awareness
No Specific Anomaly Occurred All Types
Air Traffic Control Issued New Clearance; Flight Crew Became Reoriented
Chart Or Publication; Human Factors; Procedure
Ground issued a taxi clearance to taxi to Runway 10; via Runway 16 and Alpha.  We were parked at the main terminal ramp.  Trying to figure out where to exit the ramp; we stopped at the hold short line; of what turned out to be Runway 16/34.  Runway 4/22 is depicted on the airport Diagram as a closed runway; and does not have the runway numbers depicted.  We realized this; and before we could ask to use 16/34 to taxi to (closed) Runway 4; ATC told us to utilize Runway 16 to Runway 4 to Alpha to hold short Runway 10.  Based upon various parking conditions and congestion; it would be very easy to depart the ramp area; and mistake Runway 16/34 as a parallel taxiway due to its close relative position to the ramp area; and narrow width.  The lack of a Runway 4/22 on the Airport Diagram; congested; small ramp; added to the confusion and increase workload.  Additionally; this airport does not utilize the enhanced runway hold short markings; and the hold short markings at Taxiway A and Runway 10 are a bit faded.    Additionally; Ground Control mentioned to us that the AWOS frequency needs to be activated; and sometimes works by keying the microphone 3 times.  This isn't listed as a NOTAM; or on the Jeppesen chart. Please update Company Ops Notes to include these items.  Please recommend that ATC be cognizant of these issues when issuing taxi clearance to our aircraft; and provide an initial progressive taxi; whether requested or not; to ensure that the aircraft make the proper exit at the North end of the terminal ramp to avoid a potential for runway incursion by entering Runway 16/34 unintentionally.  Issues with the AWOS should be resolved as an issuance of a NOTAM; especially considering that HTO is a part-time Tower; without Radar surveillance.
First Officer reports confusion after being cleared by HTO Ground to taxi via Runway 16 and Taxiway A to Runway 10. The crew winds up holding short of Runway 16/34 at Taxiway F.