Several special routes exist for U.S. Route 51.

Quick Facts U.S. Route 51, Location ...
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U.S. Route 51
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CountryUnited States
Highway system
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Ponchatoula–Hammond business route

Quick Facts U.S. Highway 51 Business, Location ...
Business plate.svg
U.S. Highway 51 Business marker
U.S. Highway 51 Business
LocationPonchatoulaHammond, Louisiana
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McComb business route

Quick Facts U.S. Highway 51 Business, Location ...
Business plate.svg
U.S. Highway 51 Business marker
U.S. Highway 51 Business
LocationMcComb, Mississippi
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The entire route is in McComb, Pike County.

More information mi, km ...
mikmDestinationsNotes
US 51Southern terminus
US 51Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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Crystal Springs business route

Quick Facts U.S. Highway 51 Business, Location ...
Business plate.svg
U.S. Highway 51 Business marker
U.S. Highway 51 Business
LocationCrystal Springs, Mississippi
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The entire route is in Crystal Springs, Copiah County.

More information mi, km ...
mikmDestinationsNotes


US 51 / MS 844 west to I-55 Jackson, McComb
Southern terminus; eastern terminus of MS 844
US 51Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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Former Memphis truck route

Quick Facts U.S. Route 51 Truck, Location ...
Truck plate.svg
U.S. Route 51 Truck marker
U.S. Route 51 Truck
LocationMemphis, Tennessee
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Dyersburg business route

Quick Facts U.S. Route 51 Business, Location ...
Business plate.svg
U.S. Route 51 Business marker
U.S. Route 51 Business
LocationDyersburg, Tennessee
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South Fulton–Fulton bypass route

Quick Facts U.S. Route 51 Bypass, Location ...
By-pass plate.svg
U.S. Route 51 Bypass marker
U.S. Route 51 Bypass
LocationSouth Fulton, TNFulton, KY
Existed1970–1989
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U.S. Route 51 Bypass (US 51 Byp.) was a bypass of the downtown areas of South Fulton, Tennessee and Fulton, Kentucky. It was commissioned in 1970.[1] In 1989, mainline US 51 and US 45 were moved to the bypass, and the bypass designation was decommissioned.[2]

Decatur business route

Quick Facts U.S. Route 51 Business, Location ...
Business plate.svg
U.S. Route 51 Business marker
U.S. Route 51 Business
LocationDecatur, Illinois
Existed1978–2011
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U.S. Route 51 Business (US 51 Bus.) was a business loop that ran through downtown Decatur, Illinois. It was commissioned in 1978, after a freeway bypass of Decatur was completed.[3] In 1995, a freeway bypass of Elwin was completed, and US 51 Bus. was subsequently extended.[4] In 2011, the route was decommissioned in an effort to reduce the amount of heavy truck traffic through downtown Decatur.[5]

Major intersections
The entire route was in Macon County.

More information Location, mi ...
LocationmikmDestinationsNotes
South Wheatland Township
US 51 south
Northbound exit, southbound entrance to US 51

US 51 to I-72 Springfield, Bloomington, Pana
Decatur

IL 105 west (Franklin Street) to IL 48 Blue Mound, Taylorville
South end of IL 105 overlap

IL 105 east (Lake Shore Drive)
North end of IL 105 overlap
US 36 Springfield, Tuscola
IL 48 / IL 121 Taylorville, Lincoln, Argenta, Mattoon

I-72 / US 51 north Champaign, Springfield, Bloomington
Roadway continued as US 51
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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Clinton business route

Quick Facts U.S. Route 51 Business, Location ...
Business plate.svg
U.S. Route 51 Business marker
U.S. Route 51 Business
LocationClinton, Illinois
Existed1983–present
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U.S. Route 51 Business (US 51 Bus.) is a business loop that runs through downtown Clinton, Illinois. It was commissioned in 1983, after an expressway bypass of Clinton was completed.[6]

Major intersections
The entire route is in Clinton, DeWitt County.

More information mi, km ...
mikmDestinationsNotes

US 51 south Decatur
IL 54 / IL 10 Lincoln, Champaign

US 51 north Bloomington
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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Bloomington–Normal business route

Quick Facts U.S. Route 51 Business, Location ...
Business plate.svg
U.S. Route 51 Business marker
U.S. Route 51 Business
LocationBloomington–Normal, Illinois
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Beloit spur route

Quick Facts Spur U.S. Highway 51, Location ...
Spur plate.svg
Spur U.S. Highway 51 marker
Spur U.S. Highway 51
LocationBeloit, Wisconsin
Length0.11 mi[7] (180 m)
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Spur U.S. Highway 51 (Spur US 51) is an unsigned spur route, connecting US 51 with WIS 213 via Broad Street in downtown Beloit, Wisconsin.[7]

Plover–Stevens Point business route

Quick Facts Business U.S. Highway 51, Location ...
Business plate.svg
Business U.S. Highway 51 marker
Business U.S. Highway 51
LocationPloverStevens Point, Wisconsin
Existed1971–2020
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Business U.S. Highway 51 (Bus. US 51) was a business loop that ran through the communities of Plover, Whiting, and Stevens Point. The route was commissioned after a freeway bypass of the Stevens Point area was completed in 1971. Around 2009, the route through Stevens Point was removed from the Wisconsin State Trunk Highway System and became a city street, though the highway remained signed. In 2019, the American Association of State Highway and Transportation Officials approved eliminating Bus. US 51 as the remainder of the route was planned to be transferred to the villages of Plover and Whiting in 2020.[8]

Major intersections
The entire route was in Portage County.

More information Location, mi ...
LocationmikmDestinationsNotes
Town of Buena Vista0.000.00


I-39 / US 51 / WIS 54 east / Alt. I-39 south Portage, Wausau, Waupaca
Southern end of WIS 54 and I-39 Alt overlap; roadway continues as WIS 54
Plover2.083.35


WIS 54 west / CTH-B / Alt. I-39 north Wisconsin Rapids, Amherst
Northern end of WIS 54 and I-39 Alt overlap
Stevens Point


WIS 66 east (Clark Street) / Alt. I-39 south
One-way pair; formerly US 10 east; south end of I-39 Alt overlap

WIS 66 west (Main Street)
One-way pair; formerly US 10 west


I-39 / US 51 / US 10 / Alt. I-39 ends Wausau, Portage
North end of I-39 Alt
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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Rothschild–Wausau business route

Quick Facts Business U.S. Highway 51, Location ...
Business plate.svg
Business U.S. Highway 51 marker
Business U.S. Highway 51
LocationRothschildWausau, Wisconsin
Existed1963–present
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Business U.S. Highway 51 (Bus. US 51) is a business loop serving the communities of Rothschild, Schofield, and Wausau, Wisconsin. It was commissioned in 1963, when an expressway bypass of the Wausau area was finished.[9]

Merrill business route

Quick Facts Business U.S. Highway 51, Location ...
Business plate.svg
Business U.S. Highway 51 marker
Business U.S. Highway 51
LocationMerrill, Wisconsin
Existed1976–1998
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Business U.S. Highway 51 (Bus. US 51) was a business loop that served Merrill, Wisconsin. The business loop was established in 1976 after a freeway bypass was completed east of Merrill.[10][11] In 1998, without any significant changes during its existence, it was then decommissioned in favor of CTH-K and CTH-Q.[12][13]


References

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