Jergins Tunnel, south entrance (Long Beach)

Built in 1927 and opened to the public in 1928, the Jergins Tunnel, aka Jergins Pedestrian Subway, named after pioneer oil baron Andrew T. Jergins, was built to create safe passage to the beach. It also lead to The Pike, which until 1979, was a prominant amusement park. At the time there were no stop signs or traffic signals on the corner of Pine and Ocean ... known then as “The Cross Roads of Long Beach.” What a traffic mess as you can imagine, so folks in City Hall got the idea to build what they termed, The Pedestrian Subway, AKA Jergins Tunnel. (source- longbeachheritagemuseum.com)

The Jergins Trust Building formerly stood on site until 1988. (souce- cinematreasures.org)
(source- www.millikanalumni.com/Pike/JerginsSubway.html)
(source- www.universitybythesea.com/jergins.php#press)
Conflicting information reports that the tunnel was sealed off in 1967 or 1988. 1967 is probably correct. The tunnel was reopened temporarily in 2007. Evidence suggested that vagrants and vandals had been in there. There is a movement to restore and reopen this Long Beach landmark.

added info-
The Jergins Pedestrian Subway, built as an amenity for visitors and residents in 1927, was the gateway to LB's former Pike and former downtown beach. In the 1960s, LB City Hall (whose decisions ultimately doomed the once-thriving Pike and downtown beach) sealed off the subway's entrances.
Its northern end was paved over to accommodate a hotel. Its southern end is temporarily visible because a new building under construction on the south side of Ocean Blvd. isn't finished yet.
(source- www.lbreport.com/news/oct07/usea1.htm)