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State Route 11 (SR 11) is a north–south freeway in the eastern portion of the U.S. state of Ohio. State Route 11 is the longest state freeway in Ohio. Its southern terminus is at U.S. Route 30 (US 30) in East Liverpool at the West Virginia state line on the Jennings Randolph Bridge over the Ohio River; its northern terminus is at SR 531 in Ashtabula. The route is concurrent with US 30 through East Liverpool and with Interstate 80 (I-80) near Youngstown. The first section of the route to be completed, from Canfield to Austintown, opened in 1969. The entire current route was complete in 1972, and upgraded to a divided highway by 1980. ==Route description== All of SR 11 is included as a part of the National Highway System (NHS), a network of highways identified as being most important for the economy, mobility and defense of the nation. The highest traffic count is at I-80 near Austintown, where 38,360 vehicles travel the highway on average each day. The lowest traffic count is near US 6, where 5,550 vehicles travel the highway on average each day. SR 11 starts at Jennings Randolph Bridge, and becomes concurrent with US 30 and SR 39 as it turns southwest. The concurrency bends around East Liverpool, SR 39 leaves the concurrency, and SR 7 joins it. The route finally turns north and leaves East Liverpool. It turns northwest, near the southern terminus of SR 170. It intersects the concurrency termini of SR 7 and US 30 in these three miles. SR 11 travels through forests, passes by Lisbon, only connecting with SR 154 at an interchange. The highway travels north to near Leetonia, where it meets SR 344 at a diamond interchange. The forests slowly change into farmland, as it passes under SR 14 and into Mahoning County.〔 In Mahoning County, the route becomes part of the eastern city limits of Canfield, meeting US 224 at a parclo interchange. The highway crosses over the Ohio Turnpike, and becomes concurrent with I-80 few miles later. Here, most of the route is surrounded by urban areas. The interchange with I-80 and I-680 is incomplete, with ramps from I-680 west to I-80 east and I-80 west to I-680 east missing. I-80 and SR 11 travel northeast, leaves Mahoning County, and enters Trumbull County. SR 11 and I-80 split at the interchange at SR 711, east of Girard. This interchange is also incomplete, with ramps from I-80 east to SR 711 south and SR 711 to I-80 west missing.〔〔〔 SR 11 continues north toward Ashtabula, meeting interchanges for SR 82 and an access road to the Youngstown-Warren Regional Airport. Urban areas transition back into rural areas here. It later intersects SR 305 and SR 5 at diamond interchanges near Cortland. The route then enters Ashtabula County, and travels in a straight line, passing through US 322, a rest area, US 6, and SR 307. Mostly forests and fields are between the highway. The route slowly bends northwest, and meets I-90 at a cloverleaf interchange. The route crosses over Ashtabula River, and bypasses Ashtabula. It ends at SR 531, part of the Lake Erie Circle Tour, at a stop sign.〔〔 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「Ohio State Route 11」の詳細全文を読む スポンサード リンク
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