A321
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance; Ground Incursion Taxiway
Flight Crew Requested ATC Assistance / Clarification
Airport
After landing on Runway 9L ORD and taxiing to gate. Taxi instruction given to hold short of approach path of Runway 9R while taxing south on Taxiway Tango. We taxied beyond that point under the approach path of Runway 9R. We notified ground immediately and were given clearance to continue taxing south on Tango. No conflicts were created and the controller didn't seemed concerned.We don't believe there was any hold short markings in place for taxiing underneath the approach path of 9R while south on Tango. We were looking for signage while south on Tango for reverse high speed Taxiway T2. Don't believe it's marked for that direction of taxi.Improve signage and markings; lesson learned to slow down and use more caution.
A321 Captain reported they received instructions to hold short of the Runway 9R approach path while taxiing on Taxiway Tango. They couldn't locate the hold short lines or any signage indicating where to stop.