Does the seat map for your flight shows a 3-cabin layout (GlobalFirst, BusinessFirst, Economy), or a 2-cabin layout (BusinessFirst, Economy)?
As far as I could tell, this route is served by a 3-cabin layout.
Therefore, the bassinet is located at row 19 CEH, so it seems you are OK:
http://www.united.com/web/en-US/cont...R/default.aspx