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Pennsylvania Route 28 (PA 28) is a major state highway which runs for from Anderson Street in Pittsburgh to U.S. Route 219 in Brockway in the U.S. state of Pennsylvania. From Pittsburgh to Kittanning it is a 44.5 mile long limited access expressway named the Alexander H. Lindsay Memorial Highway or the Allegheny Valley Expressway. ==Route description== Route 28 begins adjacent to Downtown Pittsburgh at the I-279/I-579 interchange and travels north/northwest along the northern bank of the Allegheny River. Until recently the route was a surface street for the first two miles until the 40th Street Bridge and then an expressway from 40th Street to Kittanning. Upgrades in 2013 made it a limited-access highway throughout its 44.5 miles in the Pittsburgh metropolitan area from the route's start at Interstate 279 to Rayburn Township, Armstrong County, with Governor Tom Corbett attending the completion ceremony on November 17, 2014. In Etna, PA 28 interchanges with Pennsylvania Route 8 at exit 5 before departing the Blue Belt, which PA 28 is part of from I-279/I-579 to this point, at exit 6 near Aspinwall. Near Harmar Township, PA 28 meets Interstate 76 (the Pennsylvania Turnpike) and Pennsylvania Route 910 at exit 11. From the Pennsylvania Turnpike to U.S. Route 422 west of Kittanning, PA 28 has eight interchanges, including exits with Pittsburgh Mills Boulevard (exit 12A), Pennsylvania Route 366 (14), and Pennsylvania Route 356 (17), while continuing to parallel the Allegheny to the east. Exit (18) consists of Pennsylvania Route 128 crossing or which used to be old 28 before the expressway. At exit 19, PA 28 merges with the limited-access US 422 and heads east along US 422 as it proceeds south of West Kittanning. Upon crossing the Allegheny River and entering Kittanning, US 422 and PA 28 interchange with Pennsylvania Route 66. PA 66 then joins the concurrency for two miles (3 km) to an exit with U.S. Route 422 Business southeast of downtown Kittanning. Here, US 422 leaves the freeway and heads east toward Indiana while PA 28 and PA 66 remain concurrent as they progress northward. The freeway ends with a concurrency with Pennsylvania Route 66. In Rayburn Township, PA 28/PA 66 intersects the western terminus of Pennsylvania Route 85. After PA 85, PA 28/PA 66 head towards the northeast. In South Bethlehem, PA 28/PA 66 become North Street and Broad Street then intersecting the northern terminus of Pennsylvania Route 839. After crossing the Redbank Creek, PA 28/PA 66 enters Clarion County and New Bethlehem. In downtown New Bethlehem, PA 66 splits off from PA 28 and making the PA 28/PA 66 concurrency one of the longest concurrencies in Pennsylvania. After the split, PA 28 heads northeast as Broad Street paralleling the Redbank Creek. In Hawthorn, PA 28 is called Brookville Street and meets the western terminus of Pennsylvania Route 536. North of PA 536, PA 28 begins to slide to the north instead of the northeast. In Summerville, PA 28's course begins to slide towards the northeast again and in Summerville, PA 28 is called Harrison Street. In Clover and Rose townships, PA 28 parallels many railroads tracks that even cross it. In Brookville, PA 28 has a Wrong-way concurrency with U.S. Route 322 and Pennsylvania Route 36. The reason of the Wrong-way concurrency is that PA 28 is heading north while PA 36 is heading south on the concurrency with US 322. In downtown Brookville, PA 36 splits off from US 322/PA 28. Then after crossing the North Fork Creek, US 322/PA 28 meet the southern terminus of the former Pennsylvania Route 968. East of here, US 322 splits off from PA 28 at a "T" interchange. East of Brookville in Pine Creek Township, PA 28 intersects Interstate 80 at exit 81 a Diamond interchange. North of I-80, PA 28 continues north as a local road without intersecting another route for more than . PA 28 passes through the many wildlife in Pennsylvania through a forest region. In Brockway, PA 28 is called Main Street before terminating (ending) at a "T" intersection with U.S. Route 219. 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「Pennsylvania Route 28」の詳細全文を読む スポンサード リンク
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