[citation needed] The DSP&P had anticipated boring the Alpine tunnel through solid rock, taking about 6 months to complete.

In the event, the line of the tunnel was found to run primarily through loose rock and clay; this very unstable ground required substantial timbering.

[citation needed] Little remains of the station complex built by the railroad to service its trains and workers at this remote and inhospitable location.

Volunteers have restored the railroad's 1883 Alpine Tunnel telegraph office and reconstructed the station platform, 120 feet (37 m) of rail track, a turntable, and an outhouse.

In 2023, work began to reinforce the Palisade Wall with the intent of reopening public access to the Alpine Tunnel Road.