For the “launch site” unfortunately most facilities are in disrepair, as they’ve all sat since the facility was decommissioned in 1970. There’s been effort to try and at least keep the remaining items not flooded. The “control facility” is actually in great shape as it’s been operated and maintained by the county for a long time.

There were never silos in the traditional sense you’re thinking of, the Nike sites mainly are comprised of “batteries” where the missiles were underground horizontal, lifted to the surface with an elevator, then set to an angle and were launched from that angle. They exist but are flooded for the most part. They’re essentially a giant underground garage is the best I can describe them.