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江門市遠望交通設施有限公司
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省道S277線海陵大堤南至閘坡段擴建工程-
來源：管理員 時間：2014-02-15
工程規模：本工程采用設計時速80km/h的一級公路標準設計（其中K76+220-K77+200段采用二級公路標準），兩側車道擴建，包括路基、路面、橋涵、隧道、交叉、交通、綠化，路線全長13.250km；起點樁號K64+750，終點樁號K78+000，其中K64+750-K76+220、K77+200-K78+000段，采用整體式路基，路基寬度為32.0m，行車道寬22.50m；K76+220-K77+200段，含新建大嶺埂隧道，采用分離式路基，左幅利用原路基及其布置形式，右幅新建路基寬度12.0m，行車道寬7.50m；全線橋梁共7座（舊橋利用+兩側加寬），涵洞21道（舊涵利用+兩側加寬）；大嶺埂山處原有一座404米長隧道維修；右側新建二車道的隧道，長約410米，凈空10.75×5.0米，隧道起點樁號K76+550，終點樁號K76+960；全線共設21處平面交叉；全線設置較完善的安全設施和服務管理設施。
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