Does anybody know how wide the C aisle is in a 777XC/XI (I think)? Specifically this flight:

Friday, April 27
United Airlines Flight 902
From: Denver Int'l Airport, CO
10:06 am, Friday, April 27
Unspecified Terminal
To: Washington Dulles Int'l Airport, DC
3:25 pm, Friday, April 27
Unspecified Terminal

and specifically from the jetway to 8C.