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Interstate 495 (I-495) is a long Interstate highway in the U.S. state of Delaware. The highway serves as a six-lane bypass of I-95 around the city of Wilmington. I-495 begins at an interchange with I-95 and I-295 near Newport to the southwest of Wilmington. From here, the road heads east to the Port of Wilmington, where it turns northeast and crosses the Christina River as it heads to the east of downtown Wilmington. Upon reaching Edgemoor, I-495 runs between the Delaware River to the east and U.S. Route 13 (US 13) to the west, continuing to Claymont. In Claymont, I-495 turns north and merges into northbound I-95 at an interchange with Delaware Route 92 (DE 92) just south of the Pennsylvania state line. Plans for a bypass of Wilmington to the east date back to 1948 and was incorporated into the Interstate Highway System in 1956. This interstate bypass was numbered I-495 in the 1960s. Construction on building I-495 took place during the course of the 1970s, with the entire length of the highway completed and opened to traffic in 1977. Between 1978 and 1980, I-95 was designated along the I-495 alignment while the South Wilmington Viaduct along I-95 was reconstructed; during this time the route through Wilmington was known as I-895. The US 13/DE 3 interchange in Edgemoor opened in 1988. In 2014, the bridge over the Christina River was closed due to tilting support columns until repairs were completed. ==Route description== I-495 begins at an interchange with I-95/US 202 and I-295 near Newport, heading to the east on a six-lane freeway. At the southern terminus, southbound I-495 also has a ramp that provides easier access to the DE 141 interchange along I-95. The route runs between the Christina River to the north and a landfill to the south prior to reaching an interchange with US 13 and the southern terminus of US 13 Bus. to the north of Wilmington Manor. Past this, the highway enters industrial areas and reaches the DE 9A exit near the Port of Wilmington, turning to the northeast. I-495 crosses over the Christina River into the eastern part of Wilmington and passes near another landfill as it comes to the 12th Street exit.〔〔 The road runs through some marshland before coming to an interchange in industrial Edgemoor that connects to the southern terminus of DE 3 as well as to US 13. Following this interchange, I-495 runs between US 13 and suburban areas to the west and Amtrak’s Northeast Corridor and the Delaware River to the east. I-495 continues along this configuration until it reaches Claymont. US 13 heads farther west from the freeway and I-495 makes a turn to the north away from the railroad tracks and the river near the Claymont station along SEPTA's Wilmington/Newark Line that uses the Northeast Corridor. The road comes to another exit for US 13 before merging into I-95 at the DE 92 interchange near the Tri-State Mall and the Pennsylvania border. Southbound, the I-495 splitoff from I-95 actually starts in Pennsylvania, but crosses into Delaware later before the exit to DE 92.〔〔 *(Delaware County ) (PDF) 〕 I-495 has an annual average daily traffic count ranging from a high of 90,379 vehicles at the south end of Wilmington near the Christina River to a low of 19,234 vehicles at the ramp to I-95 at the southern terminus.〔 As part of the Interstate Highway System, the entire length of I-495 is a part of the National Highway System. 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「Interstate 495 (Delaware)」の詳細全文を読む スポンサード リンク
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