永(yong)惠(hui)(hui)橋(qiao)(qiao)(qiao)位于山(shan)西(xi)省長(chang)治市襄(xiang)垣縣城(cheng)北(bei)(bei)門(men)與(yu)北(bei)(bei)廓(kuo)門(men)之間甘水(shui)河(he)兩岸,永(yong)惠(hui)(hui)橋(qiao)(qiao)(qiao)俗(su)稱北(bei)(bei)關橋(qiao)(qiao)(qiao)。永(yong)惠(hui)(hui)橋(qiao)(qiao)(qiao)是一(yi)座單孔青石結構(gou)的(de)拱(gong)(gong)形(xing)橋(qiao)(qiao)(qiao),橋(qiao)(qiao)(qiao)南(nan)北(bei)(bei)長(chang)33.6米,東西(xi)寬8.34米。橫跨于襄(xiang)垣縣城(cheng)北(bei)(bei)門(men)外的(de)甘水(shui)河(he)上(shang)(shang)。永(yong)惠(hui)(hui)橋(qiao)(qiao)(qiao)采用縱(zong)聯式砌筑法拱(gong)(gong)劵技術,拱(gong)(gong)劵石以(yi)疊澀收分法壘砌,形(xing)成(cheng)下大上(shang)(shang)小的(de)立體式梯形(xing)結構(gou)的(de)橋(qiao)(qiao)(qiao)座,體現了我國古代拱(gong)(gong)形(xing)技術的(de)科技水(shui)平。
永惠橋(qiao)為(wei)單孔實腹(fu)尖拱石橋(qiao),長29.5米(mi),寬8.5米(mi),橋(qiao)孔凈跨12.8米(mi),矢高7.5米(mi),高跨之比約為(wei)1:0.59。整個建筑(zhu)用(yong)(yong)長方形(xing)、梯形(xing)、微(wei)弧形(xing)石灰巖條石橫(heng)置砌(qi)成(cheng),拱券兩側(ce)正中龍(long)門石上(shang)采用(yong)(yong)深、淺(qian)浮(fu)雕(diao)手(shou)法(fa)各雕(diao)"四爪升龍(long)"三條。橋(qiao)面(mian)(mian)兩側(ce)有望柱、欄桿(gan)、石欄板裝飾。欄板雕(diao)刻(ke)春秋花卉、人物(wu)故事(shi)等,背面(mian)(mian)刻(ke)花紋。
據清乾隆縣志(zhi)載:永(yong)惠橋始(shi)建(jian)于金天會九年(1131年)。歷經明(ming)成化年間,明(ming)萬歷十九年(1591年)、清道光十九年(1838年)多次維(wei)修。現存永(yong)惠橋及附屬文物(wu)五龍廟(miao)山門、正殿、樂(le)樓(lou)。是(shi)中華人民共和國(guo)全國(guo)重(zhong)點(dian)文物(wu)保(bao)護單位之一。
1996年(nian)1月(yue)12日,授予(yu)山(shan)西(xi)省文物(wu)(wu)保護單(dan)位,2013年(nian)5月(yue)授予(yu)全國重(zhong)點文物(wu)(wu)保護單(dan)位,是(shi)一座古建筑及歷(li)史紀(ji)念建筑物(wu)(wu)。