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Map of Virginia's major cities and roads. The Virginia State Highway System is an integrated system of roads maintained by the Virginia Department of Transportation (VDOT). As of 2005, the VDOT maintains 57,082 miles (91,865 km) of state highways — the third largest system in the United States, after Texas and North Carolina.
Annual average daily traffic (AADT) is a measure used primarily in transportation planning, transportation engineering and retail location selection. Traditionally, it is the total volume of vehicle traffic of a highway or road for a year divided by 365 days.
[8] [9] [10] In 2015, PA 321 had an annual average daily traffic count ranging from a high of 4,300 vehicles along the US 6 concurrency in Kane to a low of 100 vehicles between PA 59 and PA 346. [11] The portion of PA 321 that is concurrent with US 6 is part of the National Highway System. [12]
Coal is the largest commodity by volume moving on the inland waterways. The country's electric utility industry depends on the inland waterways for more than 20 percent of the coal they consume to produce electricity. Petroleum is the next largest group, including crude oil, gasoline, diesel fuel, jet fuel, heavy fuel oils and asphalt.
The highway then turns to become briefly cosigned with Route 51, before hooking up with Interstates 376 and 279 to cross the Monongahela and Allegheny Rivers via the Fort Pitt Bridge and Fort Duquesne Bridge respectively. At the northern edge of city limits, the highway regains its independence, becoming the wide, four-lane, and business-lined ...
The Port of Pittsburgh Commission is a government agency of the Commonwealth of Pennsylvania that manages the Port of Pittsburgh, which is the second-largest inland port in the United States. [3] Pittsburgh's port ranks as the 26th largest port in the United States overall, with almost 27 million short tons of river cargo for 2015. The port ...
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All rivers with average discharge more than 15,000 cubic feet per second are listed. Estimates are approximate, because data are variable with time period measured and also because many rivers lack a gauging station near their point of outflow.