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Interstate 70 (I-70) is a portion of the Interstate Highway System that runs from near Cove Fort, Utah, at a junction with Interstate 15 to Baltimore, Maryland. It crosses the Northern Panhandle of West Virginia through Ohio County and the city of Wheeling. This segment is the shortest of all states' through which I-70 passes, crossing West Virginia in only . The longest segment is Colorado's, which measures . The Fort Henry Bridge carries I-70 from Wheeling Island across the Ohio River and into downtown Wheeling before the freeway enters the Wheeling Tunnel. I-470, a southerly bypass of Wheeling and the lone auxiliary Interstate Highway in West Virginia, is intersected near Elm Grove. Before crossing into Pennsylvania, I-70 passes The Highlands, a major shopping center in the panhandle, and the Bear Rock Lakes Wildlife Management Area. On average, between 27,000 and 53,000 vehicles use the freeway every day. The first road that entered Wheeling was a post road completed in 1794 that connected Wheeling to Morgantown. The National Road was the first interstate road, completed in 1818, that connected Wheeling to Cumberland, Maryland. When the United States Numbered Highway System was created in 1926, the National Road was designated U.S. Route 40. The I-70 designation was brought to the Northern Panhandle with the passage of the Federal Aid Highway Act of 1956, and it was built as a controlled-access highway, bypassing portions of the old National Road. The first portions of I-70 in West Virginia were opened in 1963, and construction was completed in 1971. ==Route description== Entering West Virginia from Ohio, I-70 crosses the western channel of the Ohio River onto Wheeling Island, the most populated island along the Ohio River. The freeway passes above a light commercial zone, and has an interchange with Zane Street. US 40 and become concurrent with I-70 at this interchange, before traveling east toward the Fort Henry Bridge.〔 The bridge crosses the main channel of the river and the Greater Wheeling Trail, a rail trail that parallels the eastern banks of the river. Elevated above the city of Wheeling, a complex interchange provides access to the downtown area and Benwood. Traveling eastbound, US 40 departs the freeway at this interchange and becomes concurrent with West Virginia Route 2 (WV 2) northbound. US 40 and WV 2 travel through downtown Wheeling on a one-way pair, the southbound lanes passing under I-70 and the northbound lanes passing over I-70.〔 After the interchange, I-70 enters the approximately Wheeling Tunnel which passes through Wheeling Hill. Immediately east of the tunnel, a directional T interchange provides access to WV 2 southbound near homes north of the highway. US 250 departs I-70 at this interchange. A stub ramp present at this interchange would have carried WV 2 north of I-70 had it been extended.〔 As I-70 curves to the south, it intersects US 40 and with the ramps from the eastbound lanes of US 40 and WV 88 crossing underneath I-70, parallel to Wheeling Creek. The interchange just west of the Wheeling Tunnel and this interchange are complicated by the fact that both are abutted by hills. Wheeling Jesuit University's southeastern border is formed by the freeway as I-70 approaches the neighborhood of Elm Grove. Washington Avenue provides access to the college as the highway continues south before meeting the eastern terminus of I-470, which is a bypass of Wheeling and the only auxiliary interstate highway in West Virginia.〔 Between the directional T interchange and I-470, I-70 is paralleled by the eastern branch of the Greater Wheeling Trail.〔 A final interchange within Wheeling city limits provides access to US 40 and WV 88. Leaving the city, the highway turns further east and enters a deep valley.〔 The highway climbs over Two-Mile Hill, and intersects Cabela Drive (County Route 65), which provides access to The Highlands, a large shopping destination.〔 Past The Highlands, I-70 continues northeast though woodlands to an interchange with the Dallas Pike (County Route 41). I-70 passes north of the Bear Rock Lakes Wildlife Management Area before crossing the Pennsylvania state line into Washington County southwest of West Alexander.〔 Out of the ten states I-70 passes through, the segment in West Virginia is the shortest. By comparison, the longest stretch of I-70 through a single state is the segment in Colorado.〔 Every year, the West Virginia Department of Transportation (WVDOT) conducts a series of surveys on its highways in the state to measure traffic volume. This is expressed in terms of annual average daily traffic (AADT), a measure of traffic volume for any average day of the year. In 2012, WVDOT calculated that as few as 27,000 vehicles traveled over the Fort Henry Bridge over the Ohio River, and as many as 53,000 vehicles used the highway near its junction with US 40 in Elm Grove. These counts are of the portion of the freeway in West Virginia and are not reflective of the entire Interstate. As part of the Interstate Highway System, the entire route is listed on the National Highway System, a system of roads that are important to the nation's economy, defense, and mobility. 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 70 in West Virginia」の詳細全文を読む スポンサード リンク
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