Narrative:

Requested taxi clearance. Cleared to taxi to runway 22L. Requested to use runway 4R if available. Cleared to taxi to runway 4L. Told tower we were ready on runway 4L. Then cleared for takeoff on runway 4L. At rotation, we realized there was men and equipment on runway 4L. Departure was routine as was remainder of flight.

Google
 

Original NASA ASRS Text

Title: EWR ATCT LCL CTLR CLRS AN A310 FOR TKOF ON A CLOSED RWY.

Narrative: REQUESTED TAXI CLRNC. CLRED TO TAXI TO RWY 22L. REQUESTED TO USE RWY 4R IF AVAILABLE. CLRED TO TAXI TO RWY 4L. TOLD TWR WE WERE READY ON RWY 4L. THEN CLRED FOR TKOF ON RWY 4L. AT ROTATION, WE REALIZED THERE WAS MEN AND EQUIP ON RWY 4L. DEP WAS ROUTINE AS WAS REMAINDER OF FLT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.