
桃園市政府配合八德交流道聯絡道工程,推動大漢溪左右岸道路新闢,右岸道路將新建跨溪橋梁並銜接台3線,預計明年5月招標、2030年底完工;左岸道路進入細部設計,未來將串聯國道、台3線及地方道路,形成大溪新區域交通骨架,提升替代通行能力與分流效果。
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大溪地區受大漢溪及河階地形限制,跨溪及對外交通高度依賴既有道路與橋梁,假日期間觀光車潮集中易導致主要幹道壅塞。
桃園市大漢溪兩岸新闢道路線型示意圖。(工務局提供)
配合「八德交流道」增設聯絡道工程,桃園市政府持續推動大漢溪左右岸道路新闢工程,右岸道路將新增跨越大漢溪橋梁,進一步銜接台3線,這也是大溪繼武嶺橋、崁津大橋後的第三座橋梁;右岸道路正辦理設計作業,預計明年5月招標,2030年底完工;左岸道路則進入細部設計階段,未來左右岸道路、跨溪橋梁與八德交流道聯絡道陸續完成後,將串起國道、台3線及地方道路,形成大溪新的區域交通骨架。
桃園市工務局官員表示,大溪地區受到大漢溪及河階地形限制,目前跨溪及對外交通仍高度依賴既有道路與橋梁,加上假日期間觀光車潮集中,主要幹道容易出現壅塞,桃市府因此規劃大漢溪兩岸道路串連,其中右岸新闢道路全長約1354公尺、路寬20至27公尺,採雙向雙車道設計。
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右岸道路涉及都市計畫變更部分,市府已將大溪都市計畫北端部分乙種工業區變更為道路用地,今年9月22日經桃園市都市計畫委員會審議通過,預計明年中完成相關程序。
右岸道路最大工程亮點,是新建跨越大漢溪的橋梁,道路將由左岸工程終點大鶯路476巷附近跨越大漢溪,再跨越月湖路、進入河階台地,之後以平面道路銜接信義路525巷,最後接上台3線,成為大溪新增的重要跨溪及聯外通道。
工務局官員說,左岸道路則由大鶯路1020巷延伸至大鶯路476巷,全長約2295公尺,目前進入細部設計階段,未來左右岸道路、跨溪橋梁與八德交流道聯絡道陸續完成後,將串起國道、台3線及地方道路,形成大溪新的區域交通骨架,也提升災害或道路壅塞時的替代通行能力。
未來跨溪橋梁完成後,除可直接串連大漢溪左右岸,更可與八德交流道聯絡道形成完整路網,車輛可望由國道系統經八德方向進出大溪,增加另一條區域聯外選擇,降低目前車流集中於既有道路及橋梁的情形,對大溪市區、觀光區及周邊聚落交通均具有分流效果。
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Chiayi County Road 159A (Dahua Highway) at 28K was affected by landslides and upper slope erosion caused by heavy rainfall in Typhoon Kemi. After two years of monitoring, it was decided to build a 138-meter-long open tunnel to avoid disasters. The entire line will be closed for construction starting from October 11. At the same time, the 40.95K to 42K section started a two-year preliminary monitoring due to multiple landslides. Road 41.8K will be resurfaced starting today, and vehicles will need to be diverted.

The Highway Bureau of the Ministry of Transport announced traffic diversion measures on national highways during the Liberation Day holiday from October 24 to 26, including ramp closures, high-occupancy control and toll discounts. It is estimated that the southbound traffic volume on the first day will be 1.3 times that of normal days, mainly for tourist trips.

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