Citation Excel (C560XL)
Other / Unknown
Deviation / Discrepancy - Procedural Clearance; Ground Incursion Runway; Ground Incursion Taxiway
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Issued New Clearance; Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Airport; Human Factors; Chart Or Publication
We were expecting to taxi E - G - D and crossing Runways 35R and 29 to the departure end of 35R. Our taxi instructions were to taxi E and G hold short of 35R. A few minutes later we were then cleared to cross 35R on G left on D and cross 29. Holding short of Runway 35R and before continuing; we referenced the airport diagram again. The outside references such as lighting and markings were poor. We misinterpreted the plate by mistaking pavement shadowing as Taxiway G. We started to cross 35R and turned left looking for the other side of G then stopped before Runway 29. By this time ground was informing us of our position. We informed him that we were turning around and exiting the runway onto G. We then continued our taxi to Runway 35 right. On duty 10 hours. It was late at night. Had difficulty seeing the taxiway due to glare from the terminal across the field. On airport diagram the taxiway identifier is too close to the pavement shading causing it to appear as a taxiway. Relocate the G identifier on the plate. Have more information in the hotspot note.
CE650 First Officer reports a runway incursion at SDF while attempting to cross Runway 35R on taxiway G but veering left and incurring Runway 29.