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U.S. Highway 136 (US 136) is a short U.S. Highway in Keokuk, Iowa. The highway begins on a bridge over the Des Moines River within sight of its mouth at the Mississippi River. It runs above the northern bank of the Mississippi towards downtown Keokuk. There, it turns southeast where it meets the southern end of US 218. The highway leaves Iowa on the Keokuk–Hamilton Bridge over the Mississippi River. The route was designated nationally in 1951 and has remained largely unchanged through Keokuk since then. The highway originally crossed the Mississippi on the Keokuk Rail Bridge, which was the second bridge built and operated by Andrew Carnegie's Keokuk & Hamilton Bridge Company in that location. While is was designed for wagons and early automobiles, crossing the rail bridge became difficult in larger modern vehicles, specifically semi trucks. As a result, a new automobile-only bridge was built directly to the south of the older span. The Keokuk–Hamilton Bridge opened in 1985 eight months early and under budget. ==Route description== US 136 begins on a bridge over the Des Moines River with US 61. The river's mouth on the Mississippi River is visible to the southeast of the bridge. After landing on the Iowa side of the river, the two routes curve to the east. US 61 splits off to the north and its business route begins along US 136. Entering the town from the west along 7th Street, the highway passes between two pillars which mark the northeastern corner of Rees Park.〔(【引用サイトリンク】title=Parks and Recreation in Keokuk )〕 The routes continue east past an old school which hides the city's water tower. The tower was the second largest elevated storage tank in the United States when it came online in December 2011. It then crosses a bridge which connects two bluffs, underneath which a single line of the Keokuk Junction Railway passes. The routes descend a hill as they head towards downtown; they climb another until the intersection with Main Street. At Main Street, US 136 and US 61 Business part ways. The business route turns to the northwest onto US 218 which begins its journey northward. US 136 turns to the southeast towards the Mississippi River. At the intersection with US 218, there are no directional signs for US 136. Instead, because of the southeast–to–northwest orientation of the city, westbound US 136 direction is listed as Missouri and eastbound Illinois. After running through the southern part of downtown, it crosses the Mississippi on the Keokuk–Hamilton Bridge, which is adjacent to the older Keokuk Rail Bridge. From both bridges, Lock and Dam No. 19 and its hydroelectric power plant dominate the northern view of the river. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「U.S. Route 136 in Iowa」の詳細全文を読む スポンサード リンク
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