Question: How many miles is the interstate that includes the southern terminus of U.S. Route 73?

Context articles: New Jersey Route 73
U.S. Route 73
Pennsylvania Route 73
Ohio State Route 247
Interstate 70 in Kansas
Ohio State Route 73
Ohio State Route 4
West Virginia Route 44
Ohio State Route 852
Parham Road

Route 73 is a state highway in the southern part of the U.S. state of New Jersey.
 It runs 34.64 mi as an outer bypass of the Camden area from an intersection with U.S. Route 322 in Folsom, Atlantic County to the Tacony-Palmyra Bridge in Palmyra, Burlington County, where it continues into Philadelphia, Pennsylvania as Pennsylvania Route 73.
 South of the interchange with the Atlantic City Expressway in Winslow Township, Camden County, Route 73 is a two-lane undivided county-maintained road and is signed as County Route 561 Spur, a spur of County Route 561 (CR 561).
 North of the Atlantic City Expressway, the route is maintained by the New Jersey Department of Transportation and is mostly four lanes, with the portion north of the County Route 561 concurrency a divided highway.
 North of the U.S. Route 30 (US 30) interchange near Berlin, Route 73 runs through suburban areas of the Delaware Valley, intersecting Route 70 in Marlton, the New Jersey Turnpike and Interstate 295 (I-295) in Mount Laurel Township, Route 38 and Route 41 in Maple Shade Township, Route 90 in Cinnaminson Township, and U.S. Route 130 in Pennsauken Township.
U.S. Route 73 is a north–south United States highway that runs for 113 mi from northeast Kansas to southeast Nebraska.
 The highway's southern terminus is Bonner Springs, Kansas at I-70.
 Its northern terminus is near Dawson, Nebraska at US 75.
Pennsylvania Route 73 (PA 73) is a 62.32 mi long east–west state highway in southeastern Pennsylvania.
 It runs from PA 61 in Leesport southeast to the New Jersey state line on the Tacony-Palmyra Bridge over the Delaware River in Philadelphia, where it continues as New Jersey Route 73.
 The route passes through rural areas of Berks County, crossing U.S. Route 222 (US 222) in Maiden Creek before continuing southeast through Oley and Boyertown.
 PA 73 continues into Montgomery County and intersects PA 100 in Gilbertsville and PA 29 in Schwenksville before it continues into the northwest suburbs of Philadelphia.
 The route passes through Skippack and intersects US 202 in Center Square, PA 309 in Springfield Township, and PA 611 near Jenkintown.
 PA 73 continues through Northeast Philadelphia on Cottman Avenue, crossing US 1 (Roosevelt Boulevard) and US 13 (Frankford Avenue) before coming to an interchange with Interstate 95 (I-95) near the Tacony-Palmyra Bridge.
State Route 247 (SR 247) is a 30.49 mi long north–south state highway in the southern part of the U.S. state of Ohio.
 SR 247 has its southern terminus at a dead end overlooking the Ohio River 0.35 mi south of its junction with U.S. Route 52 (US 52), nearly 4.75 mi northeast of Manchester.
 The northern terminus of SR 247 is at a signalized intersection with State Route 73 in Hillsboro.
In the U.S. state of Kansas, Interstate 70 contains the first segment to start being paved and to be completed in the Interstate Highway System.
 It extends from the Colorado border near the town of Kanorado to the Missouri border in Kansas City.
 The route covers 424 mi and passes through several of the state's principal cities in the process including Kansas City, Topeka, and Salina.
 The route also passes through the cities of Lawrence, Junction City, and Abilene.
State Route 73 (SR 73) is an east–west state highway in the southern portion of the U.S. state of Ohio.
 Its western terminus is on U.S. Route 27 in Oxford at the intersection of SR 732.
 SR 73’s eastern terminus is in Portsmouth at US 23; this is also the southern terminus of SR 104, and the two state routes run concurrent for over 6 mi from this point north.
 Once SR 73 enters Scioto County, it is designated as the Scenic Scioto Heritage Trail by the Ohio Department of Transportation.
State Route 4 (SR 4), formerly known as Inter-county Highway 4 until 1921 and State Highway 4 in 1922, is a major north–south state highway in Ohio.
 It is the fifth longest state route in Ohio.
 Its southern terminus is at U.S. Route 42 in Cincinnati, Ohio, and its northern terminus is at U.S. Route 6 in Sandusky, Ohio.
 Its path is nearly ruler-straight for many miles.
 Some portions of the route are still marked as Dixie Highway.
 The northern portion was constructed by the Columbus and Sandusky Turnpike Company, see Turnpike Lands.
West Virginia Route 44 is a north–south state highway located within Logan County, West Virginia.
 The southern terminus of the route is at U.S. Route 52 one mile south of Mountain View.
 The northern terminus is at West Virginia Route 73 in Logan.
 It is marked as the Jerry West Highway after the basketball player who had jersey 44.
State Route 852 (SR 852) is a north–south state highway in the southern portion of the U.S. state of Ohio.
 Its southern terminus is at the Kentucky state line on the Carl Perkins Memorial Bridge over the Ohio River near Portsmouth, and its northern terminus is at an interchange with the State Route 73/State Route 104 concurrency, just north of a complex interchange with U.S. Route 52 about 1.75 mi west of Portsmouth.
Parham Road is a circumferential highway in Henrico County in the U.S. state of Virginia.
 The highway runs 12.08 mi from Virginia State Route 150 (SR 150) near Tuckahoe east to U.S. Route 301 (US 301) and SR 2 in Chamberlayne.
 Parham Road serves the northwestern suburbs of Richmond, including Tuckahoe, Laurel, and Chamberlayne.
 The four-lane divided highway intersects all of the major highways that extend northwest and north from the city, including Interstate 64 (I-64) and I-95.
 Parham Road is county maintained except for the portion that is State Route 73, a connector between US 1 and I-95.
 The Parham Road name was applied to a small portion of the current route by the early 20th century.
 SR 73 was constructed in the early 1960s.
 Most of Parham Road from SR 6 to US 1 was constructed as new four-lane divided highway by Henrico County in the late 1960s; the existing sections were upgraded at the same time.
 The highway was extended east to its present terminus in the late 1970s.
 Parham Road was completed south to its present western terminus in 1990 concurrent with the extension of SR 150 across the James River from the Southside of Richmond to Henrico County.