Widebody Transport
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Distraction; Other / Unknown; Situational Awareness
Deviation / Discrepancy - Procedural Clearance; Ground Event / Encounter Other / Unknown; Ground Incursion Taxiway
Air Traffic Control Provided Assistance; Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Human Factors
While taxiing out of exit spot FE on the EWR Ramp; we were cleared to taxi RB to A. When we were leaving the ramp there was construction going on in the triangle between N; A and PA. Our attention was momentarily diverted to a convoy of dump trucks that drove out in front of us as we were leaving FE. I diverted too much attention to allowing space between my left wingtip and the dump truck while I was taxiing. Looking at the construction it seemed to impede what was taxiway A; I misidentified Taxiway A and the Terminal A entry into the [Company] ramp. Ground told us to stop and contact Ramp; which we did. Ramp told us to contact Ground which we did and they told us to continue a right turn on RA to a left turn on A which we did and the rest was uneventful. I am not sure of the signage for Taxiway A coming from the [Company] Ramp.Unusual taxi instruction from the normal flow; Taxiway A instead of B. Attention diverted to construction and truck while I should have slowed down or stopped to recalculate the route. Not triple checking the taxi chart. Stopping and reviewing a shared mental picture with my co-pilot. If construction trucks are a factor stop and let ground know. Don't allow preconceived taxi biases to cause a conflict. Don't let yourself get too hurried. For future flights from EWR it might be a good idea to let the crews know that A has enough taxi clearance for all aircraft. Visually from the [Company] Ramp it doesn't appear to be the case.
Air carrier Captain reported taxiway incursion due to distraction from taxiway construction area and associated vehicles.