This article contains information about a planned or expected future road.
It may contain information of a speculative nature and the content may change as the road's construction or completion approaches and more information becomes available.
This highway crosses four interstate highways on its journey through the state and actually crosses Interstate 240 twice within the City of Memphis but interchanges with it only at Union Avenue. US 51 is the westernmost south-north United States Highway in the State of Tennessee. US 51 is an interstate standard facility1 from Dyersburg to South of Troy and then resuming interstate standard status north of Union City to South Fulton. US 51 is a four-lane or larger facility throughout the state with some sections north of Dyersburg carrying a 70MPH speed limit.
Near Henning is also the site of the Hatchie River Bridge collapse on April 1, 1989 that killed 8 motorists when 3 spans of the structure collapsed. The 54-year old bridge was 45 miles north of Memphis and carried the northbound lanes of US 51. Its collapse was the result of pier scour and movement of the river channel.34
Most of US 51 north of Dyersburg is expected to be upgraded as part of future Interstate 69. Plans currently call for Interstate 69 to run along the existing US 51 freeway from Dyersburg to Troy and from Union City to South Fulton. This section is part of SIU 7 for Interstate 69 and will require few changes beyond resigning the existing highway, however, a bypass route around Troy and Union City will need to be built before this section of future Interstate 69 is completed56. See Interstate 69 in Tennessee for further information.
End SR 3 Overlap. US 45 and unsigned SR 3 continue north. US 45E and unsigned SR 215 begin southbound overlap. US 51 and unsigned SR 215 begin northbound overlap.
To Julian M. Carroll Purchase Parkway
(unsigned) ends at Kentucky State Line. overlap begins.