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Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at 3,099.7 miles (4,988.5 km). It begins in Seattle, Washington , and travels through the Pacific Northwest , Mountain West , Great Plains , Midwest , and the Northeast , ending in Boston , Massachusetts.
The highest posted speed limit in the country is 85 mph (137 km/h) and can be found only on Texas State Highway 130, a toll road that bypasses the Austin metropolitan area for long-distance traffic. The highest speed limit for undivided roads is 75 mph (121 km/h) in Texas. Undivided road speed limits vary greatly by state.
In Iowa, the majority of highways have a 55 mph (90 km/h) speed limit. Rural Interstate Highways carry a 70 mph (115 km/h) limit and a 40 mph (65 km/h) minimum. Urban Interstate limits generally range from 55 to 65 mph (90 to 105 km/h), but may be lower in areas. Four-lane roads may have a 65 mph (105 km/h) limit.
The maximum speed limit on I-90 is 50 mph (80 km/h) in downtown Cleveland because of two sharp curves with a suggested limit of 35 mph (55 km/h) in a heavily congested area; I-70 through Wheeling, West Virginia, has a maximum speed limit of 45 mph (70 km/h) through the Wheeling Tunnel and most of downtown Wheeling; and I-68 has a maximum speed ...
Will overlap Interstate 77 in the state I-77: 66.27: 106.65 I-74/I-77 at the NC state line: I-77 at the WV state line 1972 [4] current Will overlap Interstate 74 in the state I-81: 324.92: 522.91 I-81 at the TN state line: I-81 at the WV state line 1959 [5] current I-81 is the longest Interstate Highway in Virginia I-85: 68.64: 110.47
The state highway system of the U.S. state of Virginia is a network of roads maintained by the Virginia Department of Transportation (VDOT). As of 2006, the VDOT maintains 57,867 miles (93,128 km) of state highways , [ 1 ] making it the third-largest system in the United States .
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State Route 90 (SR 90) is a primary state highway in the U.S. state of Virginia. Known as Main Street, the state highway runs 1.73 miles (2.78 km) from SR 616 and SR 749 north to Interstate 81 (I-81) within Rural Retreat in western Wythe County. SR 90 connects Rural Retreat with I-81 and U.S. Route 11 (US 11).