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|---|---|---|---|---|
| 台84線 | ||||
| 北門玉井線 (Beimen-Yujing Expressway) | ||||
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| Route information | ||||
| Maintained by Directorate General of Highways | ||||
| Length | 41.428 km[1] (25.742 mi) | |||
| Existed | July 1998–present | |||
| Major junctions | ||||
| West end |  Prov 61 in Beimen, Tainan City | |||
 Nat 1 in Xiaying, Tainan City Nat 3 in Guantian, Tainan City | ||||
| East end |   Prov 20 / Prov 3 in Yujing, Tainan City | |||
| Location | ||||
| Country | Taiwan | |||
| Highway system | ||||
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Provincial Highway 84 (Chinese: 台84線) is an expressway, which begins in Beimen, Tainan on the Provincial Highway No. 61 and ends in Yujing, Tainan on Zhongshan Road (Provincial Highway No. 20).