The Balong Suspension Bridge on the Jiaobanshan Sanxing Historic Trail from the Japanese occupation period is located 47 kilometer away from today's Northern Cross-island Highway, next to the Baling Scenic Bridge. The predecessor of the Northern Cross-island Highway was the Jiaobanshan Sanxing Historic Trail during the Japanese occupation. In October of Taisho 3rd year (1914) the Japanese built the Balong Suspension Bridge. When the Northern Cross-island Highway was built in the 1960s, the Bridge was demolished and rebuilt into the Baling Bridge. Although the suspension bridge no longer exists, the Taoyuan City Government has reproduced a small section of the suspension bridge at the southern end of the bridge, allowing tourists to see the full image of the bridge at that time.

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