First officer and captain reported departing a runway that ATIS showed as closed but controllers ask...

Narrative:

After pushback and engine start from the gate at okc; I called ground control for taxi and they asked me if we wanted runway 31 for departure. I looked at the captain and we both agreed since it's a shorter taxi. I recall mentioning to the captain that 'I guess they opened runway 31;' since it was reported closed on the ATIS. I accepted the offer and we were issued a taxi clearance to runway 31. Once clear of the ramp; I pulled out the opc to recalculate for the new runway. Shortly thereafter; at the runway; I switched to tower frequency and we were cleared for takeoff for runway 31. I don't know why the runway was listed closed on the ATIS; but it did not seem unusual to us that it was closed and then reopened by ATC. Furthermore; both ground and tower control cleared us to the runway so we didn't question it. Finally; neither of us saw any markings to indicate that runway 31 was closed. I feel that we both acted in a safe manner in this case. I don't recall seeing runway 31 listed closed in any notams; and even if it was; I would assume that both controllers would be aware of their runway status. The next time; if there is any doubt; I will verify it with the controller.

Original NASA ASRS Text

Title: First Officer and Captain reported departing a runway that ATIS showed as closed but controllers asked if they wanted to depart on. Pilots accepted runway and later found out through company that it was closed.

Narrative: After pushback and engine start from the gate at OKC; I called Ground Control for taxi and they asked me if we wanted Runway 31 for departure. I looked at the Captain and we both agreed since it's a shorter taxi. I recall mentioning to the Captain that 'I guess they opened Runway 31;' since it was reported closed on the ATIS. I accepted the offer and we were issued a taxi clearance to Runway 31. Once clear of the ramp; I pulled out the OPC to recalculate for the new runway. Shortly thereafter; at the runway; I switched to Tower frequency and we were cleared for takeoff for Runway 31. I don't know why the runway was listed closed on the ATIS; but it did not seem unusual to us that it was closed and then reopened by ATC. Furthermore; both Ground and Tower Control cleared us to the runway so we didn't question it. Finally; neither of us saw any markings to indicate that Runway 31 was closed. I feel that we both acted in a safe manner in this case. I don't recall seeing Runway 31 listed closed in any NOTAMs; and even if it was; I would assume that both controllers would be aware of their runway status. The next time; if there is any doubt; I will verify it with the controller.

Data retrieved from NASA's ASRS site 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.

Attributes
ACN	1172069
Time
Date	201405
Local Time Of Day	1201-1800
Place
Locale Reference	OKC.Airport
State Reference	OK
Environment
Light	Daylight
Aircraft 1
Make Model Name	Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Person 1
Function	First Officer
Experience	Flight Crew Last 90 Days 298
Person 2
Function	Captain
Experience	Flight Crew Last 90 Days 248 Flight Crew Type 8000
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy Ground Incursion Runway

First officer and captain reported departing a runway that ATIS showed as closed but controllers asked if they wanted to depart on. Pilots accepted runway and later found out through company that it was closed.