US 378, 401 and 501 in South Carolina
US 378 in South Carolina
According to ablogtophone, US 378 is a US Highway in the US state of South Carolina. The road forms an east-west route through the center and east of the state, from the Georgia border through Columbia and Sumter to Conway. US 378 is 341 kilometers long in South Carolina.
US 378 in Georgia comes from Lincolnton and crosses the Savannah River before continuing in South Carolina through the Sumter National Forest to Columbia, the capital of South Carolina. West of Columbia, US 378 is a two-lane single-lane road. East of Columbia, US 378 is a major 2×2 divided highway with a short section of freeway around Sumter. Many US Highways are crossed on the route. The section from Lake City to Conway is again a single carriageway. US 378 ends in Conway at US 501.
US 378 was added to the US Highways network in 1952 as a connection between Washington, Georgia and Conway, South Carolina. The route has not been modified since then.
The J. Strom Thurmond Dam was constructed between 1946 and 1954, turning the Savannah River into a reservoir. US 378 was assigned as the reservoir began to form. The original 1938 bridge over the reservoir was replaced in 2017 by a more modern bridge.
The most important part for traffic was the double numbering with US 76 between Columbia and Sumter. This section was widened to 2×2 lanes in the early 1960s, including a freeway bypass of Sumter. In the late 1960s or early 1970s, the 2×2 stretch from Sumter to I-95 was constructed over a length of 20 kilometers.
In the 1980s, the section between Lexington and Columbia was widened to a 5-lane road with a center turn lane. From the 1990s, the area around this part was increasingly built up with retail and businesses. In the late 1990s and early 2000s, the stretch paralleling Lake Murray west of Lexington was widened to a 5-lane road with a center turn lane. About 2006-2007, US 378 between I-95 and US 52 in Lake City was widened to 5 lanes over a length of nearly 40 kilometers. In 2017, the 35-kilometer stretch further from Lake City to Kingsburg was widened to 5 lanes. This widened an increasing portion of US 378 in eastern South Carolina to 5 lanes of traffic.
US 401 in South Carolina
According to beautyphoon, US 401 is a US Highway in the US state of South Carolina. The road forms an east-west route from Sumter through Darlington and Bennettsville to the North Carolina border. US 401 is 124 kilometers long in South Carolina.
US 401 begins in Sumter on US 76 and some other US Highways and heads northeast, parallel to Interstate 95, but some distance away. The route is almost everywhere a two-lane single-lane road. The road is secondary in nature due to the many alternate routes in the region, the most important of which is I-95. US 401 in North Carolina continues toward Fayetteville.
There have been multiple US 401s in the past. The first US 401 was added to the network in 1927 but only ran in Virginia. The second US 401 was added to the network in 1933 and only existed for two years as a connection between Walterboro, South Carolina and Raleigh, North Carolina, after which it was replaced by US 15. The third and current US 401 was added to the network in 1957. This route started in Sumter and went to Norlina, North Carolina.
US 401 was one of the many US Highways that run through Sumter and due to double numbering with US 52 and US 15 in the northeast of the state, US 401 had a somewhat more secondary character. In the 1950s, the section that is double-numbered with US 15 was laid outside the center of Bennettsville. In the early 1960s, the Darlington diversion opened, over which US 52 also runs. Only the section from Sumter to Darlington does not coincide with other US Highways, this section has not been upgraded.
US 501 in South Carolina
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US 501 is a US Highway in the US state of South Carolina. The road forms a north-south route through the far east of the state, from Myrtle Beach to the border with North Carolina. US 501 is 119 kilometers long in South Carolina.
US 501 along Myrtle Beach.
US 501 begins in Myrtle Beach on US 17 and is a major road as a gateway to The Grand Strand, a major vacation area around Myrtle Beach. The US 501 is therefore almost entirely a divided highway with 2×2 lanes. Via Conway and Marion, the route heads northwest, parallel to the border with North Carolina. The last section heads northeast, after which US 501 in North Carolina continues toward Durham.
US 501 was one of the original US Highways of 1926 but did not yet pass through the state of South Carolina at the time. This was the case from 1934, when the route was extended south from Durham, North Carolina to Myrtle Beach, South Carolina. It is also sometimes stated that the route was extended south in two phases between 1933 and 1935, with a stop at Conway.
In the 1960s, US 501 was upgraded to a 2×2 divided highway between Conway and Myrtle Beach for 25 kilometers in response to increasing tourism in the Grand Strand region. Later in the 1960s and early 1970s, a 50-mile stretch between Marion and Conway was widened to 2×2 lanes, creating a 4-lane corridor from I-20/I-95 at Florence to Myrtle Beach. In the 1970s, the double numbering with the US 301 between Latta and Dillon to a 5-lane road with center turn lanewidened. At the end of the 1980s, a diversion was built at Marion, so that through traffic from the north no longer had to pass through this place. In 2005-2006, the section between Marion and Latta was widened to 2×2 lanes, connecting to newly constructed State Route 32, providing a direct connection to I-95.
In about 2003, a section of Myrtle Beach was provided with grade separated intersections between State Route 31 and US 17, turning it into a quasi – freeway. Special is the configuration of the node with SR-31.