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Interstate 20 Business (Florence, South Carolina)

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Interstate 20 Business marker
Interstate 20 Business
David H. McLeod Boulevard
Route information
Business route of I-20
Maintained by SCDOT
Length2.244 mi[1][2] (3.611 km)
Existed1970–present
Major junctions
West end I-20 / I-95 in Florence
East end US 76 in Florence
Location
CountryUnited States
StateSouth Carolina
CountyFlorence
Highway system
← I-20→ SC 20

Interstate 20 Business (I-20 Bus., Bus. 20, BS 20, or Bus. 20 Spur) is a business spur of I-20 in Florence, South Carolina. The route follows David H. McLeod Boulevard for 2.244 miles (3.611 km), from the eastern terminus of I-20 at I-95, eastward to U.S. Route 76 (US 76).[1]

The route serves western Florence’s main commercial district; connecting to I-20, I-95, US 76, South Carolina Highway 51 (SC 51), and the central Florence retail areas. Its entire length is part of the National Highway System (NHS).[3]

Route description

Approaching the eastern end of I-20, and the eastern beginning of I-20 Bus. on I-95 in Florence

I-20 Bus. begins at the interchange where I-20 meet its eastern end at I-95 exit 160, on the western edge of Florence. West of this interchange, I-20 continues west toward Columbia as J. Strom Thurmond Freeway; while I-20 Bus. becomes David H. McLeod Boulevard.

Magonia Mall’s Belk on I-20 Bus.

I-20 Bus. travels east as a divided urban arterial through a major commercial corridor, at the speed limit of 45 mph (72 km/h). It meets its first intersection of West Radio Drive. Its northbound of the roadway takes the drivers from I-20 Bus., north to the southern terminus of Dumbarton Drive; before making its entrance to the Magnolia Mall. Its southbound of the roadway provides access to retail areas, hotels, and the Florence Center district. West Radio Drive connects south to South Ebenezer Road; which goes west, northwest, and then going northward; while crossing the bridges above I-95 and I-20, without the direct interchange; toward U.S. Route 52 (US 52) near Darlington.

Farther east, I-20 Bus. intersects intersection with Frontage Road where it widens to six lanes. The Frontage Road begins southwest of the intersection at West Radio Drive. It parallels south of I-20 Bus. going eastward serving more shops, restaurants, hotels, and a gas station; before turning northward at the route. Beyond I-20 Bus., the Frontage Road becomes another entrance road to the Magnolia Mall. The third right lane on westbound I-20 Bus., west of this intersection, used to be an exit lane for its former interchange to Dumbarton Drive. The off-ramp from westbound I-20 Bus. to Dumbarton Drive was removed in 2018, for more room in development to the mall area.[4][5]

I-20 Bus. crosses above the Beaverdam Creek; until meeting an intersection with southern terminus of North Beltline Drive, and the northern terminus of Woody Jones Boulevard. Both roads severs access to shops and restaurants. North Beltline Drive serves a Walmart and Sam’s Club there. The roadway narrows back to four lanes as it crosses the bridge above the Florence Rail Trail. It meets an intersection with the southern terminus of Doizer Boulevard, and the northern terminus of Bentree Lane. Both road serves access to commercial offices. Doizer Boulevard also servers Lowe’s. Bentree Lane provides a short cut way south to US 76. Then past US 76, it becomes Holly Circle to go eastward toward South Carolina Highway 51 (SC 51). These roads provide access to additional commercial and residential areas along western Florence.[6]

West Evans Street going southward from downtown Florence towards the western beginning of I-20 Bus., before reaching a few blocks to US 76 and the southern beginning of SC 51

The median narrows and the speed limit drops to 40 mph (64 km/h), before meeting West Evans Street. According to South Carolina Department of Transportation (SCDOT), West Evans Street is where I-20 Bus. meets its eastern terminus at. The street connects south shortly to the southern beginning of SC 51 (2nd Loop Road); and goes north to the Florence mall, and to the downtown portion of the city. SC 51 south (along with US 378 east, and then US 501 south) provides a four-lane high speed corridor to Myrtle Beach. Past West Evans Street, the roadway continues shorty as US 76 Connnector (US 76 Conn.). However, signage of I-20 Bus. continues east along David H. McLeod Boulevard to its official eastern terminus at US 76 (West Palmetto Street).[1][2][7]

Traffic

According to SCDOT traffic counts, I-20 Bus. carries approximately 17,000 vehicles per day near the I-95 interchange, increasing to nearly 29,000 vehicles per day near North Beltline Drive. The highest volumes occur near major retail areas along the eastern portion of the route.[8]

History

David H. McLeod Boulevard was constructed in the late 1960s during development of I-20 through the Florence area. I-20 Bus. was later established to provide direct access between the interstate system and Florence’s commercial districts.[9] The boulevard is named after David H. McLeod, a former mayor of Florence who supported local development initiatives and civic projects in the mid-20th century. He made efforts related to the founding era of Francis Marion University.[10]

Commercial development along the corridor increased significantly in the 2010s. Roadway changes near Magnolia Mall and Dumbarton Drive accompanied redevelopment and new retail construction along the boulevard. The off-ramp from I-20 Bus. to Dumbarton Drive was removed in 2018.[4][5]

Major intersections

The entire route is in Florence, Florence County.

mi[1][2]kmDestinationsNotes
0.00.0
 I-20 west (J. Strom Thurmond Freeway west) – Columbia
I-95 – Fayetteville, Savannah		Interchange; western terminus of I-20 Bus.; eastern terminus of mainline I-20; signed as exits 141A (north) and 141B (south) using I-20 exit numbering; I-95 exit 160; roadway continues as I-20 westbound
0.50.80West Radio DriveAt-grade intersection; to Civic Center Vistors Information Center via West Radio Drive southbound; to Magnolia Mall via West Radio Drive northbound
0.81.3Dumbarton Drive northInterchange; former westbound exit, removed in 2018 [4][5]
1.01.6Frontage RoadAt-grade intersection; Frontage Road north severs as a connector road to Magnolia Mall
1.32.1North Beltline Drive north / Woody Jones Boulevard southAt-grade intersection
1.93.1Doizer Boulevard north / Bentree Lane southAt-grade intersection
2.13.4



 West Evans Street to US 76 west / SC 51 south – Timmonsville, Myrtle Beach, Downtown Florence		At-grade intersection; SCDOT marks this intersection as the eastern terminus of I-20 Bus. and the western terminus of unsigned US 76 Conn.; SC 51 (2nd Loop Road) terminates at US 76 few blocks south from this intersection; to Myrtle Beach (along with US 378 east, and then US 501 south) via SC 51 south; to Florence Mall and downtown via West Evans Street north
2.23.5 US 76 (West Palmetto Street) – Timmonsville, Florence, Myrtle BeachAt-grade intersection; officially signed eastern terminus of I-20 Bus.; SCDOT marks this intersection as the eastern terminus of unsigned US 76 Conn.; to Francis Marion University, Florence Airport, and another way to Myrtle Beach via US 76 east
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
  •       Closed/former

References

  1. "Highway Logmile Report". South Carolina Department of Transportation. Retrieved February 20, 2026.
  2. "Overview Map of I-20 Bus. (Florence, South Carolina)" (Map). Google Maps. Retrieved February 14, 2026.
  3. Federal Highway Administration (October 2020). National Highway System: Florence SC (PDF) (Map). Federal Highway Administration. Archived (PDF) from the original on January 12, 2025. Retrieved June 28, 2026.
  4. Brown, Tonya (October 23, 2017). "Magnolia Mall in Florence continues to grow". WPDE-TV. Retrieved February 20, 2026.
  5. Brown, Tonya (April 13, 2018). "City officials tout growth along David McLeod Boulevard in Florence". WPDE-TV. Retrieved February 20, 2026.
  6. South Carolina Department of Transportation (July 2020). Florence Urban Area (PDF) (Map). South Carolina Department of Transportation. Retrieved February 20, 2026.
  7. South Carolina Department of Transportation (1973). General Highway Map, Florence County, South Carolina (PDF) (Map). South Carolina Department of Transportation. Archived from the original (PDF) on October 4, 2007. Retrieved June 28, 2026.
  8. "2024 Average Daily Traffic Counts, Florence County" (PDF). South Carolina Department of Transportation. Retrieved February 20, 2026.
  9. South Carolina Department of Transportation (1964). General Highway Map, Florence County, South Carolina (Map). South Carolina Department of Transportation. Retrieved February 20, 2026.
  10. "Founders Day at 50: Founding of FMU remains a hot topic". Francis Marion University. June 30, 2020. Retrieved February 20, 2026.