Date: 201412
Local time of day: 1201-1800
Location: SJU.Airport, PR
Flight conditions: VMC
Light: Daylight
Aircraft: Medium Large Transport
Operator: Air Carrier
Operating under: Part 121
Mission: Passenger
Flight phase: Taxi
ATC / advisory: Ground SJU
Aircraft component: Electronic Flt Bag (EFB)
Component problem: Improperly Operated
Reporter organization: Air Carrier
Reporter function: Pilot Not Flying; First Officer
Reporter qualification: Flight Crew Air Transport Pilot (ATP)
Human factors: Human-Machine Interface; Distraction; Confusion; Communication Breakdown; Workload; Situational Awareness
Second reporter function: Captain; Pilot Flying
Anomaly: Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Incursion Taxiway
Detector: Person Air Traffic Control; Person Flight Crew
Result: Air Traffic Control Issued Advisory / Alert; Air Traffic Control Issued New Clearance; Flight Crew Returned To Clearance; Flight Crew Became Reoriented
Contributing factors: Chart Or Publication; Airport; Procedure
Primary problem: Procedure

Narrative: After normal pushback and engine start; I called for taxi instructions. We were given; 'Taxi to Runway 8; N; N1; inner ramp; S; hold short S2.' I wrote the instructions down as they were given; read the clearance back; and we began to taxi. As we left the ramp and joined N; the Captain wanted clarification on our hold short instruction. I called Ground back and asked for confirmation of our taxi instructions. Again; Ground confirmed we should hold short of S2. We proceeded to taxi from N to N1; then along the inner ramp around the barriers blocking a portion of the S taxiway that was closed. Once clear of the barriers; the Captain joined Taxiway S as our instructions directed. We taxied on S and stopped short of S2. At this point; the Ground Controller called us and said that the S Taxiway was closed and 'crumbling' and we should relocate to the ramp taxi lane. The Captain complied and relocated to the ramp taxi lane with no incident. We proceeded to the end of the runway and continued with a normal takeoff and departure.The Captain and I both had the taxi charts out and visible and in use. We both verified the taxi instructions and each turn; especially since I've only been through SJU one other time. There is a note on the chart that says S is closed between S2-S5; but neither of us saw it because we were zooming in to verify the turns on the poorly marked airfield and taxiways. The note also says that the taxiway is closed; lighted; and barricaded; which isn't true. There is a small portion of the taxiway that is barricaded (between S4-S5); and we both thought that was the closed portion. There is no other indication that the rest of the taxiway is closed at all.


Second narrative: The First Officer confirmed with Ground Control that they were to hold short of Sierra 2. I highlighted the taxi route on a zoomed-in taxi chart and we both confirmed taxi route with each other and taxied out.


Synopsis: An air carrier crew was cleared to taxi to SJU Runway 8; N; N1; inner ramp; hold short of S2. While taxiing; both pilot's EFBs were zoomed in; therefore neither pilot saw the chart note that Taxiway S was closed between S2 and S5 and remained on Taxiway S.