Virtual Tour US 6 / US 99Newhall Pass US 6 / US 99 Junction Tunnel Station The Tunnel Station Viaduct (53-409), as it is known, was originally built in 1911 by the City of Los Angeles. The structure was later widened in 1936 to its current form. While somewhat modified in the intervening years through … Continue reading US 6 / US 99 Junction – Tunnel Station