Interstate 77 in North Carolina

Interstate 77
I-77 highlighted in red
Route information
Maintained by NCDOT
Length	105.7 mi[1][2] (170.1 km)
Existed	1965 – present
Major junctions
South end	I-77 / US 21 at the SC line near Fort Mill, SC
	I-485 in Charlotte (twice) I-85 in Charlotte I-40 in Statesville I-74 near Mount Airy
North end	I-77 at the VA line near Mount Airy
Location
Counties	Mecklenburg, Iredell, Yadkin, Surry
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future North Carolina Highway System Interstate U.S. State Scenic ← US 76 NC 78 →

Interstate 77 (I-77) is a part of the Interstate Highway System that runs from Columbia, South Carolina to Cleveland, Ohio. In North Carolina, I-77 enters the state in Charlotte, from South Carolina. Crossing the western piedmont, it connects with the control city of Statesville before continuing north into Virginia. The landscapes traversed by I-77 is a contrast of urban and rural foothills, with views of the Blue Ridge Mountains seen from a distance on its most northern section. The interstate has a total of 105.7 miles (170.1 km) and has one auxiliary route.

The freeway bears several names in addition to the I-77 designation. Throughout the state the freeway is known as the Blue Star Memorial Highway, a name shared with multiple interstates across the state. Starting at the South Carolina state, it is known as the General Paul R. Younts Expressway, switching at Woodlawn Road to the Bill Lee Freeway, ending at the Mecklenburg-Iredell county line. In Surry County, it is known as the Charles M. Shelton Highway.^[3][4][5]

Not originally part of the Federal Aid Highway Act of 1956, it was added the following year as a route between Charlotte and Port Huron, Michigan. In 1958, the routing was realigned towards Cleveland, Ohio instead. I-77 received two extension approvals; the first in 1964, continuing south from Interstate 85 (I-85) to U.S. Route 74 (US 74), and the second in 1969 to the South Carolina state line towards Columbia. The interstate was completed in 1977.

Route description

Virginia-North Carolina state line on I-77

Interstate 77 begins at the South Carolina state line, near Fort Mill, in concurrency with US 21. I-77 goes through the city of Charlotte as a major north–south corridor, connecting the Center City with the suburbs of Pineville, Huntersville, Cornelius, and Davidson. Shortly after entering North Carolina, it expands to six lanes. Between I-485 (exit 2) and I-277 (exit 9), the highway experiences massive traffic congestion during weekday rush hours (7:00-9:30 a.m./4:00-6:30 p.m.) due to commuter traffic. Just north of Center City, I-77 makes a unique interchange configuration with Interstate 85, with north and southbound lanes crisscrossing briefly. Between I-85 (exit 13) and I-485 (exit 19), I-77 features the state's only HOV lanes. After I-485, I-77 reduces to five lanes (three lanes northbound), then to four lanes after Gilead Road (exit 23).

At Lake Norman, I-77 crosses into Iredell County and becomes a more suburban interstate, passing by Mooresville and then Statesville, where it intersects with Interstate 40. It turns more rural outside of Statesville and becomes entirely rural after exiting Iredell County. For the rest of I-77's stretch through North Carolina, the only possible rest stop is the town of Elkin; the speed limit through this area is 70 mph (110 km/h). The final 5 miles (8.0 km) of I-77 is concurrent with Interstate 74 to the Virginia state line (where I-74 ends), all within view of the Blue Ridge Mountains.^[1]

History

I-74 & I-77 near Pine Ridge

Iredell County Rest Area

Interstate 77 was not part of the original plans for 714 miles (1,149 km) of the nation's Interstate Highway System in North Carolina when they were conveyed in 1956 by the then-North Carolina State Highway Commission. I-77 was added in 1957, increasing the state's mileage to 776 miles (1,249 km).^[12]

On 4 August 1959, the commission selected the routing of I-77 to run between Interstate 85 in Charlotte and a point on the Virginia border in Elkin. That would change in late 1960, when the commission voted to route the highway just west of Mount Airy, saying the route would serve the most people.

With construction beginning in the 1960s, I-77 would gain additional mileage in October 1964 when a two-mile (3 km) extension was granted by the U.S. Bureau of Public Roads. Instead of ending at I-85, I-77 now ended at Independence Boulevard (U.S. 74) in downtown Charlotte. Another extension was granted in the late 1960s that extended I-77 from Independence Boulevard to the South Carolina border. The latest extension also included a relocation of U.S. 21 from the city's surface streets to the new interstate.

I-77 opened to traffic in the following segments:

• 1965: Yadkin and Surry counties.
• 1966: A 23-mile (37 km) stretch in Iredell County.
• 1967: Stretches in Mecklenburg, Yadkin and Iredell counties.
• 1968: A stretch of highway in the Davidson and Cornelius areas in Mecklenburg and Iredell counties.

By 1972, I-77 was open from Exit 28 (NC 73) to Exit 73 north of Elkin. The last two sections of the highway to open to traffic was the stretch from Cornelius to Charlotte in 1975 and from Exit 73 to the Virginia state line in 1977.

In April 2001, I-74 was overlapped with I-77 from the Virginia state line to exit 101.^[13]

On December 17, 2004, I-77 was widened to six-lanes with HOV lanes, between I-85 to the proposed location of I-485 (later opened 8 December 2008).^[6]

On June 28, 2013, a new interchange was added in Mooresville, exit 35: Brawley School Road. The interchange was built with additional shoulder space and lights that will not need to be moved when I-77 is eventually widened in area.^[14]

In 2015, NCDOT signed a contract with I-77 Mobility Partners to begin construction and eventual management of the toll lanes starting in 2018.^[15] However, new criticism erupted before the financial agreement was made when local politicians discovered the contract was amended in 2014 giving I-77 Mobility Partners a 50-year non-compete clause. The clause eliminated any future widening of additional free-lanes between Charlotte Center City and Mooresville; or if any additional free-lanes were added, then NCDOT would have to pay the developer compensation.^[16][17]

On February 1, 2018, NCDOT opened a new rest area located in the median of I-77, at mile marker 58. Construction of the 5,000 square feet (460 m²), $15 million facility started in the spring of 2015. With the opening of the facility, four older rest areas in Iredell and Yadkin counties, built in 1972-73, were closed.^[18]

Future

Woodlawn Road & Billy Graham Parkway overhead sign

Interstate 77 is planned to have its existing southbound travel lanes widened (not add more lanes), between I-277/NC 16 (Brookshire Freeway) to I-85 in Charlotte. Estimated to cost $16.5 Million, the purpose of the project is to widen the lanes back to proper Interstate standards as agreed with FHWA, when NCDOT were given design exceptions when adding the HOV lanes in 2004. Construction is tentatively scheduled to begin in late 2016.^[19]

As of June 2016, HOT lanes are being constructing along Interstate 77. The project is broken into two parts: the first is constructing new travel lanes from I-485 interchange (exit 19) to West Catawba Avenue (exit 28), at an estimated cost of $57 million. The second would be to convert the existing HOV lanes from Brookshire Boulevard (exit 11) to I-485 (exit 19). After completion, drivers and motorcyclists can still use the lane for free if qualified under HOV rules, non-compliant drivers will be charged a toll.^{[20][21][22][23]}

The I-40/I-77 interchange (exit 51) is undergoing a major upgrade in three phases: reconstruction of nearby intersections on both interstates, reconstruction and widening of I-40/I-77 interchange, and construction of new ramps at the interchange. The estimated cost for the entire project is $251 million and construction began in March 2012. It will replace the current interchange, which was built in the late 1960s.^[24][25][26]

Auxiliary routes in North Carolina

	Interstate	City	Type	Notes
	Interstate 277	Charlotte	Beltway	A complete loop around Charlotte center city

Exit list

County	Location	mi[1]	km	Exit	Destinations	Notes
Mecklenburg	Charlotte	0.0	0.0		I-77 south / US 21 south – Rock Hill, Columbia	Continuation from South Carolina
		0.9	1.4	1A	Westinghouse Boulevard	Formerly exit 1 before August 2010
		1.8	2.9	1B	I-485 – Huntersville, Pineville	Formerly exit 2 (southbound) before August 2010
		2.8	4.5	3	Arrowood Road	Formerly exit 2 (northbound) before August 2010
		3.7	6.0	4	Nations Ford Road
		4.8	7.7	5	Tyvola Road	Single-point urban interchange
		6.0	9.7	6A	Woodlawn Road south – Queens University	To Pfeiffer University
		6.2	10.0	6B	NC 49 (South Tryon Street) / Billy Graham Parkway	To Billy Graham Library
		7.3	11.7	7	To NC 49 / Clanton Road
		8.3	13.4	8	To NC 160 / Remount Road	Northbound exit and southbound entrance
		9.0	14.5	9A	NC 160 (West Boulevard)	Southbound exit and northbound entrance
		9.4	15.1	9B	I-277 north / US 74 east (John Belk Freeway)
		9.5	15.3	9C	US 74 west (Wilkinson Boulevard) to US 29 to NC 27
		9.9	15.9	10A	US 29 / NC 27 (Morehead Street)	Southbound exit and northbound entrance
		10.4	16.7	10	Trade Street / Fifth Street	Signed southbound as exits 10B (east) and 10C (west)
		11.0	17.7	11A	I-277 south / NC 16 south (Brookshire Freeway east) – Downtown Charlotte
		11.2	18.0	11B	NC 16 north (Brookshire Freeway west)	Northbound left exit
		12.4	20.0	12	Lasalle Street / Atando Avenue
		13.3	21.4	13	I-85 – Greensboro, Spartanburg	Signed as exits 13A (north) and 13B (south)
		15.8	25.4	16	US 21 north (Sunset Road) to NC 115	North end of US 21 overlap; signed as exits 16A (north/east) and 16B (west) To Historic Latta Plantation/Carolina Raptor Center; parclo
		18.6	29.9	18	NC 24 (W.T. Harris Boulevard)	To Northlake Mall; parclo
	Huntersville	19.7	31.7	19	I-485 – Matthews, Pineville	Signed as exits 19A (north/inner) and 19B (south/outer)
		23.0	37.0	23	Gilead Road – Huntersville
		25.5	41.0	25	NC 73 – Concord, Huntersville
	Cornelius	28.3	45.5	28	US 21 south (Catawba Avenue) – Cornelius, Lake Norman	South end of US 21 overlap, to be converted into a diverging diamond interchange in August, 2013[27]
	Davidson	29.8	48.0	30	Griffith Street – Davidson	To Davidson College
Iredell	Mooresville	31.7	51.0	31	Langtree Road – Mooresville
		33.3	53.6	33	US 21 north – Lake Norman	North end of US 21 overlap
		35.0	56.3	35	Brawley School Road	Single-point urban interchange
		36.2	58.3	36	NC 150 – Lincolnton, Mooresville	Planned diverging diamond interchange[27]
	​	41.8	67.3	42	US 21 / NC 115 – Troutman	half-clover interchange
	​	45.5	73.2	45	Amity Hill Road – Troutman, Barium Springs
	Statesville	48.7	78.4	49A	US 70 (Garner Bagnal Boulevard)	half-clover interchange
		49.0	78.9	49B	Salisbury Road – Downtown Statesville	half-clover interchange
		50.1	80.6	50	East Broad Street – Downtown Statesville
		51.3	82.6	51	I-40 – Winston-Salem, Hickory	Signed as exits 51A (east) and 51B (west) southbound; cloverleaf interchange
	​	54.0	86.9	54	US 21 – Turnersburg
	​	59.0	95.0	59	Tomlin Mill Road – Olin
	​	65.5	105.4	65	NC 901 – Harmony, Union Grove
Yadkin	Brooks Crossroads	73.7	118.6	73	US 421 – Yadkinville, Winston-Salem, Wilkesboro, Boone	Signed as exits 73A (south) and 73B (north); cloverleaf interchange
	​	79.0	127.1	79	US 21 south / US 21 Bus. north – Jonesville	South end of US 21 overlap
	Jonesville	81.9	131.8	82	NC 67 – Jonesville, Boonville, Elkin
Surry	Elkin	83.7	134.7	83	US 21 north – Sparta, Roaring Gap	North end of US 21 overlap; southbound exit is via exit 85
		84.8	136.5	85	NC 268 Byp. – Elkin
	​	93.2	150.0	93	Zephyr Road – Dobson
	Oak Grove	100.0	160.9	100	NC 89 – Mount Airy, Galax
	Pine Ridge	100.8	162.2	101	I-74 east – Mount Airy, Winston-Salem	East end of I-74 overlap; semi-directional T interchange
	Stewarts Creek Township	105.7	170.1		I-77 north – Wytheville	Continuation into Virginia
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access

See also

• Carowinds
• Interstate 74
• Lake Norman
• Lake Norman State Park
• Northlake Mall
• Uptown Charlotte

References

External links

Route map:

• Media related to Interstate 77 in North Carolina at Wikimedia Commons
• NCDOT: I-77 Express Lanes
• NCRoads.com: I-77
• North Carolina @ AARoads - Interstate 77

Interstate 77
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