Crj-200 first officer reports taxiing to runway 11 at taxiway A1 and learning later that taxiway A1 ...

Narrative:

Cae was experiencing fog with RVR's around 1200 when we called for initial taxi from the gate. ATC said to taxi to runway 11 and to pull over to the right side to await our wheels-up time. ATC also wanted us to notify them when we were holding short of runway 11. We complied by taxiing to runway 11 and pulling into the right side of what appeared to be a holding pad. In an effort to be as accurate as possible about our holding position; I looked at my chart page and told ATC that we were holding short of runway 11 on taxiway A1. ATC acknowledged. Only later did I realize that taxiway A1 was notamed closed. However; there was no visual indication that the associated pavement was unserviceable. Also; that was the only pavement that we could have used to comply with our initial taxi clearance. We subsequently noticed that the signage for taxiway A1 at runway 11 was purposely obscured. And the grassy area depicted on the commercial airport diagram does not exist. The entire A1/A2 area is paved with no island in-between. I believe that we put our aircraft on the pavement that ATC intended. However; I don't understand why that pavement was notamed closed. Also; the airport diagram could better depict the taxiway A1/A2 area by removing the island/grass feature because it does not exist.

Original NASA ASRS Text

Title: CRJ-200 First Officer reports taxiing to Runway 11 at Taxiway A1 and learning later that Taxiway A1 was closed by NOTAM. It is also noted that Taxiways A1 and A2 appear to be separated by turf or dirt which does not actually exist.

Narrative: CAE was experiencing fog with RVR's around 1200 when we called for initial taxi from the gate. ATC said to taxi to Runway 11 and to pull over to the right side to await our wheels-up time. ATC also wanted us to notify them when we were holding short of Runway 11. We complied by taxiing to Runway 11 and pulling into the right side of what appeared to be a holding pad. In an effort to be as accurate as possible about our holding position; I looked at my chart page and told ATC that we were holding short of Runway 11 on Taxiway A1. ATC acknowledged. Only later did I realize that Taxiway A1 was NOTAMed closed. However; there was no visual indication that the associated pavement was unserviceable. Also; that was the only pavement that we could have used to comply with our initial taxi clearance. We subsequently noticed that the signage for Taxiway A1 at Runway 11 was purposely obscured. And the grassy area depicted on the commercial airport diagram does not exist. The entire A1/A2 area is paved with no island in-between. I believe that we put our aircraft on the pavement that ATC intended. However; I don't understand why that pavement was NOTAMed closed. Also; the airport diagram could better depict the Taxiway A1/A2 area by removing the island/grass feature because it does not exist.

Data retrieved from NASA's ASRS site as of July 2013 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	1120928
Time
Date	201310
Local Time Of Day	0601-1200
Place
Locale Reference	CAE.Airport
State Reference	SC
Environment
Flight Conditions	IMC
Light	Dawn
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Ground Event / Encounter Other / Unknown Ground Incursion Taxiway

Crj-200 first officer reports taxiing to runway 11 at taxiway A1 and learning later that taxiway A1 was closed by NOTAM. It is also noted that taxiways A1 and A2 appear to be separated by turf or dirt which does not actually exist.