Securing Riviera gives the USGA 12 consecutive years of future US Open sites, and 16 of the next 19 are set through 2042. The only open dates now are 2036, 2038 and 2040. In all, 20 sites have been determined through 2051.
Only once the R&A decided to cancel the Open Championship, freeing up the September window for the USGA to hold the US Open, did it give Winged Foot a chance at remaining the host venue.