List of Missouri supplemental routes in Franklin County

Missouri Supplemental Route System
Highway markers for Routes A and BB
System information
Formed	1952
State	Route xx
System links
Missouri State Highway System Interstate US State Supplemental

Missouri supplemental routes are owned and maintained by the Missouri Department of Transportation (MoDOT).

Route A

Route A
Length	8.005 mi (12.883 km)

Route A is located in north central Franklin County. The route serves as an alternate route from Union to Washington, and provides access to Krakow.

Major intersections

The entire route is in Franklin County.

Location	mi	km	Destinations	Notes
Union	0.000	0.000	Route 47 – Washington, St. Clair	Southern terminus
	3.055	4.917	Route BB south	Northern terminus of Route BB
Krakow	4.151	6.680	Route YY west	Eastern terminus of Route YY
Washington	8.005	12.883	Route 100 / Lewis and Clark Trail – New Haven, Washington	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route B

Route B
Length	8.686 mi (13.979 km)

Route B is an east-west Missouri supplemental route in northwestern Franklin County. The route is an alternate route of Route 100, providing access to Berger. The highway runs parallel to Union Pacific's Jefferson City Subdivision.

Major intersections

The entire route is in Boeuf Township, Franklin County.

mi	km	Destinations	Notes
0.000	0.000	Route 100 – Hermann	Western terminus
8.686	13.979	Route 100 – New Haven	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route C

Route C
Length	14.385 mi (23.150 km)

Route C is a north-south Missouri supplemental route in western Franklin County, running between U.S. Route 50 near Leslie and Route 100 in New Haven. The route is a rural one, serving farms along its 14-mile (23 km) length.

Major intersections

The entire route is in Franklin County.

Location	mi	km	Destinations	Notes
Lyon Township	0.000	0.000	US 50 – Gerald, Leslie	Southern terminus
	1.235	1.988	Route ZZ west	Eastern terminus of Route ZZ
	6.754	10.870	Route YY east	South end of Route YY concurrency
	7.816	12.579	Route YY west	North end of Route YY concurrency
Boeuf Township	12.430	20.004	Route KK east	Western terminus of Route KK
New Haven	14.385	23.150	Route 100 – Washington, Hermann	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Route D

Route D
Length	5.820 mi (9.366 km)

Route D is a north-south Missouri supplemental route nearly entirely within Crawford County, with its northern terminus in Franklin County near its southern edge. The route's southern terminus is at the beginning of state maintenance in w:Boone Township, Crawford County, Missouri, and its northern terminus is at an interchange with I-44 in Sullivan. The route connects Sullivan to numerous rural neighborhoods south of the city.

Major intersections

County	Location	mi	km	Destinations	Notes
Crawford	Boone Township	0.000	0.000	Rock Road west	Southern terminus; continuation west as Rock Road
Franklin	Sullivan	5.207	8.380	Historic US 66
		5.820	9.366	I-44 – St Clair, Cuba	Northern terminus; diamond interchange
				Route WW west	Continuation beyond northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route E

Route E
Length	14.366 mi (23.120 km)

Route E is an east-west Missouri supplemental route in Gasconade and Franklin Counties, serving as a bypass of Hermann for those traveling from northbound Route 19 to eastbound Route 100. The route connects Drake to New Haven.

Major intersections

County	Location	mi	km	Destinations	Notes
Gasconade	Boeuf Township	0.000	0.000	Route 19 – Drake, Hermann	Western terminus
		5.127	8.251	Route H north	Southern terminus of Route H
Franklin	Boeuf Township	8.941	14.389	Route VV north	Southern terminus of Route VV
		11.580	18.636	Route Y south	Northern terminus of Route Y
		14.336	23.072	Route 100 – Hermann, Washington	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route F

Route F
Length	6.509 mi (10.475 km)

Route F is a highway in far eastern Franklin County and western Jefferson County, with a very small, 176.42 feet (53.77 m) section crossing through St. Louis County. The majority of the route is in Jefferson County, providing a bypass of BL I-44 to Eureka via Route FF. It is contiguous to Route OO, and is known as South First Street within the city limits of Pacific.

Major intersections

County	Location	mi	km	Destinations	Notes
Jefferson	Meramec Township	0.000	0.000	Lynch Road south	Southern terminus; continuation as Lynch Rd.
		0.622	1.001	Route FF east	Western terminus of Route FF
		4.021	6.471	Route O west	Eastern terminus of Route O
St. Louis	Pacific	5.17	8.32	Unnamed Meramec River bridge; briefly enters St. Louis County
Franklin		6.17	9.93	Route N west (W. Congress Street) / E. Congress Street east	Northern terminus of Route N; unsigned
		6.509	10.475	I-44 BL (Osage Street) to I-44 Route OO north (N. 1st Street)	Northern terminus; continuation as Route OO
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route H

Route H
Length	20.001 mi (32.188 km)

Route H is a north-south supplemental route in southwestern Franklin County, running from Route 185 in Sullivan at the southeastern end to U.S. Route 50 in Gerald at the northwestern end. The route is a two-lane road for its duration. It is contiguous with Route Y.

Major intersections

The entire route is in Franklin County.

Location	mi	km	Destinations	Notes
Sullivan	0.000	0.000	Route 185 – Spring Bluff	Southern terminus
Boone Township	5.833	9.387	Route J south	Northern terminus of Route J
	6.088	9.798	Route AE south	Northern terminus of Route AE
	10.343	16.645	Route AC east	Western terminus of Route AC
	13.332	21.456	Route AN south	Northern terminus of Route AN
Gerald	20.001	32.188	US 50 – Rosebud, Beaufort	Northern terminus
			Route Y north – Dissen	Continuation beyond northern terminus; southern terminus of Route Y
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route K

Route K
Length	14.337 mi (23.073 km)

Route K is a north-south supplemental route in southern Franklin County. It serves as part of an alternate route between Sullivan and Saint Clair. The route's southern terminus is at Route 185 near Sullivan, and its northern terminus is at Route 30/Route 47 in Parkway.

Major intersections

The entire route is in Franklin County.

Location	mi	km	Destinations	Notes
Meramec Township	0.000	0.000	Route 185 – Sullivan	Southern terminus
Parkway	14.337	23.073	Route 30 / Route 47 to I-44 – Saint Clair	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route M

Route M
Length	2.352 mi (3.785 km)

Route M is a short north-south supplemental route in northeastern Franklin County. It serves as a connector, running between Route AT and Route 100 in Villa Ridge. The road is the main thoroughfare of Villa Ridge.

Major intersections

The entire route is in Villa Ridge, Franklin County.

mi	km	Destinations	Notes
0.000	0.000	Route AT / Historic US 66 – Union	Southern terminus
2.352	3.785	Route 100 to I-44 – Washington	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route N

Route N
Length	17.513 mi (28.184 km)

Route N is a north-south supplemental route in eastern Franklin County. It connects Gravois Road in Lonedell to Route F in Pacific, and serves the communities in between. It is also known as Bend Road and West Congress Street throughout some portions of its route.

Major intersections

The entire route is in Franklin County.

Location	mi	km	Destinations	Notes
Lonedell	0.000	0.000	Route 30 (Gravois Road) to Route FF south – St. Clair, Cedar Hill, Luebbering	Southern terminus
Robertsville	8.07	12.99	Route O west to I-44	South end of Route O concurrency
Catawissa	10.093	16.243	Route O east – Pacific Route HH south to Route 30	North end of Route O concurrency; Northern terminus of Route HH
Pacific	17.513	28.184	Route F (First Street) / Congress Street east	Northern terminus and continuation as E. Congress Street; unsigned
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Route O

Route O
Length	12.128 mi (19.518 km)

Main article: Missouri Route O (Franklin County)

Route O is an east-west Missouri supplemental route in eastern Franklin County, with a short section in Jefferson County. The road serves as a major thoroughfare through eastern Franklin County, connecting Catawissa and Robertsville with Pacific, Villa Ridge, and Union, subsequently providing access to I-44.

Route T

Route T
Length	14.976 mi (24.102 km)

Route T is an east-west supplemental route in Franklin and St. Louis counties, and is contiguous to Route V. It serves as a loop of Route 100, providing access to Labadie, and bypassing Gray Summit and Villa Ridge. It is concurrent with the Lewis and Clark Trail for its entire length.

Major intersections

County	Location	mi	km	Destinations	Notes
Franklin	Boles Township	0.000	0.000	Route V west – Union Route 100 east / Lewis and Clark Trail – New Haven Route 100 west to I-44	Western terminus; continuation as Route V
	Labadie	3.738	6.016	Route MM south – Gray Summit	Northern terminus of Route MM
St. Louis	Wildwood	14.976	24.102	Route 100 / Lewis and Clark Trail – Wildwood, Gray Summit	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route V

Route V
Length	7.683 mi (12.365 km)

Route V is an east-west supplemental route in northern Franklin County. It serves as a bypass of Washington. It is contiguous to Route T.

Major intersections

The entire route is in Franklin County.

Location	mi	km	Destinations	Notes
Union	0.000	0.000	Route 47 to US 50 – Washington, St. Clair	Western terminus
Boles Township	7.683	12.365	Route T east / Route 100 / Lewis and Clark Trail – New Haven, Labadie	Eastern terminus; continuation as Route T
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route W

Route W
Length	1.014 mi (1.632 km)

Route W is a short east-west supplemental route in southern Franklin County. The route functions as a spur route from I-44 in Stanton southeast to the Meramec Caverns. It is contiguous to Route JJ.

Major intersections

The entire route is in Franklin County.

Location	mi	km	Destinations	Notes
Stanton	0.000	0.000	Route JJ west	Continuation beyond western terminus
			I-44 – Rolla, Saint Louis	Western terminus; Diamond interchange
Meramec Township	1.014	1.632	Twin Spring Road – Meramec Caverns	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route Y

Route Y
Length	14.792 mi (23.805 km)

Route Y is a north-south supplemental route in northwestern Franklin County. It serves the rural communities between Gerald and New Haven. It is contiguous to Route H.

Major intersections

The entire route is in Franklin County.

Location	mi	km	Destinations	Notes
Gerald	0.000	0.000	Route H south / US 50 – Strain, Rosebud	Southern terminus; continuation as Route H
	4.228	6.804	Route ZZ west	Southern end of Route ZZ concurrency
	4.616	7.429	Route ZZ east	Northern end of Route ZZ concurrency
New Haven	9.477	15.252	Route YY east	Western terminus of Route YY
	14.792	23.805	Route E	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Route AP

Route AP
Length	0.688 mi (1,107 m)

Route AP is a short supplemental route in far eastern Franklin County. It connects Route NN with nearby Nike Elementary School.

Major intersections

County	Location	mi	km	Destinations	Notes
Franklin	Catawissa	0.000	0.000	Nike Base Road west to Route HH	Western terminus; continuation as Nike Base Road
		0.688	1.107	Route NN to Route 30 (Gravois Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route AT

Route AT
Length	4.772 mi (7.680 km)

Route AT is a short supplemental route in eastern Franklin County. It connects Villa Ridge to Union.

Major intersections

County	Location	mi	km	Destinations	Notes
Franklin	Union	0.000	0.000	I-44 / US 50 east – St. Louis, Rolla US 50 west – Union, Jefferson City To Route AH	Western terminus
	Villa Ridge	0.747	1.202	Route O east – Robertsville	Western terminus of Route O, access to Robertsville State Park
		1.786	2.874	Route M north	Southern terminus of Route M
		4.772	7.680	Route 100 / Lewis and Clark Trail – Washington, Gray Summit To I-44 / US 50 – St. Louis, Rolla	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route BB

Route BB
Length	3.074 mi (4.947 km)

Route BB is a north-south supplemental route in central Franklin County, running diagonally from Route 50 to Route A. It primarily serves the subdivisions west of Union.

Major intersections

The entire route is in Union, Franklin County.

mi	km	Destinations	Notes
0.000	0.000	US 50 – Beaufort, Union	Southern terminus
3.074	4.947	Route A – Krakow	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Route MM

Route MM
Length	4.138 mi (6.659 km)

Main article: Missouri Route MM (Franklin County)

Route MM is a short highway in northeastern Franklin County.

Route NN

Route NN
Length	10.263 mi (16.517 km)

Route NN is a highway in far eastern Franklin County, and western Jefferson County. The majority of the route is in Jefferson County, with a short segment in Franklin County. It serves as a connector from Pacific (via Route O) to Hillsboro (via Route B).

Major intersections

County	Location	mi	km	Destinations	Notes
Jefferson	Cedar Hill	0.000	0.000	Route B south (Hillsboro Road) – Hillsboro Route 30 (Gravois Road) – Cedar Hill, Dittmer	Southern terminus; continuation as Route B
Franklin	Catawissa	8.533	13.733	Route AP west (Nike Base Road)	Eastern terminus of Route AP
	Calvey Township	10.263	16.517	Route O – Catawissa, Pacific	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi