这条西行的单孔隧道于1973年开通，为乘客提供了一条穿过洛弗兰德山区的捷径，节省他们近一个小时的时间。
The westbound bore opened in 1973, savingcommuters close to an hour by providing them an alternate route throughthe formidable Loveland Pass.
独特之处：直径达76英尺的耶尔瓦布埃纳岛隧道是世界上最宽的单孔隧道，1936年11月，这项令人印象深刻的工程落成开通。
Why It's Unique: With a 76-foot diameter, Yerba BuenaIsland Tunnel is the world's widest single-bore tunnel, an impressivefeat considering it opened in November of 1936.
独特之处：直径达76英尺的耶尔瓦布埃纳岛隧道是世界上最宽的单孔隧道，1936年11月，这项令人印象深刻的工程落成开通。
Why It's Unique: With a 76-foot diameter, Yerba BuenaIsland Tunnel is the world's widest single-bore tunnel, an impressivefeat considering it opened in November of 1936.
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