U.S. Route 25E

Highway in Tennessee and Kentucky, United States

U. S. Route 25E (US 25E) is the eastern branch of US 25 from Newport, Tennessee, where US 25 splits into US 25E and US 25W, to North Corbin, Kentucky, where the two highways rejoin. The highway, however, continues as US 25E for roughly 2 mile (3 km) until it joins Interstate 75 (I 75) in the Laurel County community of North Corbin at exit 29. The highway serves the Appalachia regions of Kentucky's Cumberland Plateau and the Ridge and Valley section of East Tennessee, including the urbanized areas of Corbin and Middlesboro in Kentucky and Morristown in Tennessee. US 25E follows the original pathway of early U. S. pioneer Daniel Boone's Wilderness Road, which contributed to the increased settlement of Appalachia given its access through the rugged Cumberland Gap. By 1815, the route became the first state funded road in Tennessee and, in 1923, unsigned State Route 32 (SR 32) in the Tennessee State Route System in its statewide entirety. It would be recognized as part of the Dixie Highway, one of the earliest federal auto trails, in 1915. The route was officially established as US 25E with the creation of the U. S. Numbered Highway System in 1926. By 1965, economic conditions in Appalachia remained dire, and the formation of the Appalachian Regional Commission (ARC) provided new incentive for US 25E as part of the Appalachian Development Highway System (ADHS), designated as Corridor S in Tennessee and partially as Corridor F in both Tennessee and Kentucky. Corridor S follows US 25E between I 81 in Morristown to SR 63 (Corridor F) in Harrogate, and Corridor F follows the route from SR 63 to US 119 in Pineville. With its role in the ADHS, US 25E was planned for improvements as a regional limited access highway between I 75 and I 81. Initial construction work began in both states around the 1960s and 1970s but was accelerated in the 1980s and 1990s with additional federal funding for the section of US 25E between I 75 and I 81 with its designation as a federal truck route in the Federal Highway Administration (FHWA)'s National Network by 1982 and as High Priority Corridor 12 of the National Highway System by Congress in 1991 with the passing of the Intermodal Surface Transportation Efficiency Act (ITSEA). Considered a civil engineering achievement, the tunnel is one of two in the entire U. S. that crosses state lines. US 25E serves as an arterial expressway for long distance travelers and truckers connecting central Appalachia to the Great Lakes and Eastern Seaboard regions of the U. S. via access to I 75, I 81, and proximity to I 26 and I 40. Since the completion of the Cumberland Gap Tunnel in 1996, upgrades to freeway grade standards have been planned and constructed for US 25E in both states to improve regional freight movement.

US 25E is maintained by the Tennessee Department of Transportation (TDOT) and the Kentucky Transportation Cabinet (KYTC) in the sections located in their respective states. Both states also have access to federal funding through the FHWA and ARC, given US 25E's designation as High Priority Corridor 12 from its terminus at I 75 in North Corbin, Kentucky, to I 81 in Morristown, Tennessee, and Appalachian Highway corridors F in Kentucky and Tennessee and S in Tennessee, respectively. In addition, the FHWA contracts the maintenance and operations of US 25E in the Cumberland Gap Tunnel to Tunnel Management, Inc., a subsidiary of Vaughn and Melton Consulting Engineers.

US 25E begins in the western portion of the city of Newport in Cocke County where it forks at the signalized northern terminus of US 25 alongside US 25W/US 70. Northbound US 25 and westbound US 70 leave Newport toward Dandridge concurrent with one another. From Newport, US 25E continues as two lane primary highway, meets the under construction Newport Bypass (SR 35/US 321), and enters unincorporated Cocke County through a rugged forested area near the community of Gum Spring approaching the Douglas Lake impoundment of the French Broad River. After briefly paralleling the eastern shoreline of the French Broad River at Webb Hollow,

US 25E then enters Jefferson County northeast of the resort city of Baneberry, through a rural rolling corridor in the unincorporated community of Leadvale before entering the town limits of White Pine at SR 341 (Roy Messer Highway/Old Airport Road). In the town of White Pine, US 25E becomes State Street, the main thoroughfare in the town providing access to the town's residential areas and central business district. Exiting White Pine at Walnut Street, US 25E passes through farmland and connects to Walters State Community College (WSCC)'s Great Smoky Mountains Expo Center approaching I 81 at exit 8 near the Jefferson–Hamblen county line.

Entering Hamblen County, US 25E widens to a four lane divided expressway at I 81 exit 8 and is designated ADHS Corridor S and the Davy Crockett Parkway. US 25E then enters the southernmost city limits of Morristown near the East Tennessee Progress Center industrial park at a signalized intersection. It passes through a highway exit oriented commercialized corridor in the neighborhood of Witt, passing by Witt Elementary School and intersecting SR 343 (Newport Highway), a former alignment of US 25E. North of SR 343, US 25E traverses a rural commercial area and meets the western terminus of SR 113 (Spencer Hale Road). US 25E ascends the forested Bays Mountain ridge and becomes a freeway. It meets SR 160 (Governor Dewitt Clinton Senter Highway), a southern bypass route of Morristown at a partial cloverleaf interchange. After this crossing, US 25E enters the town of Bean Station in Grainger County, passing by tourist based commercial development along a peninsula on the Cherokee Reservoir shoreline near Johnson Ridge. Exiting the tourist area on a rock fill embankment surrounded by the Cherokee Reservoir shoreline, the highway traverses Collins Ridge, passing by the Crosby Pothole Nature Refuge and is surrounded by Cherokee Reservoir on another rock fill embankment, before approaching the restricted junctions of Broadway Drive, an old alignment of US 25E, and the northern terminus of SR 375. North of Thorn Hill, US 25E traverses through the rugged forested Copper Ridge and Broken Valley area, passing by natural water springs and the former Imperial Tennessee marble quarry; approaching the pre stressed box girder Indian Creek bridge. After crossing Indian Creek, US 25E enters the Dry Valley region adjacent to the Clinch River. US 25E briefly parallels the Clinch River on its west side and the Dry Valley rock bluff on its east before crossing the river once again at the Grainger–Claiborne county border via a multi beam girder bridge. Entering Claiborne County, US 25E winds through the forested and mountainous Caney Valley region and crosses the Norris Lake impoundment of Big Sycamore Creek on a stringer bridge. North of Big Sycamore Creek, US 25E has an intersection with eastbound SR 33, beginning a brief concurrency northbound toward the town of Tazewell. US 25E/SR 33 exits the Caney Valley region and enters the rural unincorporated community of Springdale, crossing over Little Sycamore Creek and passing by Springdale Elementary School and the Tazewell–Claiborne County Airport. North of Springdale, US 25E then ascends up Wallen Ridge passing by farmland and crosses over an old alignment of the road. After the overpass, the highway enters the southernmost town limits of Tazewell with access to Claiborne County High School but follows a J shaped bypass around town's central business district. At the terminus of the bypass, US 25E splits from SR 33 in which the latter heads west toward Maynardville. US 25E heads north and immediately intersects SR 345 at its signalized eastern terminus. North of SR 345, US 25E follows a rural and commercialized corridor before exiting the northern city limits of Tazewell and enters a rugged rural corridor. It goes through a rock cut at Pine Hill, approaching the Powell River. Overall, US 25E remains a multilane divided highway for its entire extent in Kentucky.

The route of US 25E was recorded to be first traversed by Native Americans, predominately the Cherokee people, long before the Appalachian region was settled by European pioneers. During this period, the route was considered a part of the Cherokee Warriors' Path. The pathway of US 25E was also known as the Buffalo Trail, named for a legend stating the path was formed from herds of buffalo traveling from Asheville, North Carolina to the Powell River near the Cumberland Gap for the river's salt licks. Most notably, the pathway of the Corbin to Bean Station section of US 25E was utilized as famous pioneer and settler, Daniel Boone's Wilderness Road, being used for early interstate travel through the Cumberland Gap, aiding interstate travel in Appalachia. Among the early settlers using the Wilderness Road was William Bean, the recorded first European U. S. settler of the state of Tennessee. Bean would establish the outpost of Bean Station, which served as the new southern terminus of the Wilderness Road, in 1776.

In 1915, the initial Bean Station Turnpike, along with a southward extension to Morristown and the old Wilderness Road from Cumberland Gap to Corbin, was designated as part of the Dixie Highway, one of the first federal auto trails. These were among the earliest known national highways developed in the U. S. That same year, the Tennessee Department of Highways and Public Works, the predecessor agency to TDOT, was formed and tasked with establishing a state highway system. On October 1, 1923, the Tennessee section of the route was designated as SR 32 with the approval of the initial routes of the Tennessee State Route System. The first portion in Tennessee to be paved was a section between Tazewell and Harrogate, which took place between 1918 and 1922. The 5.4 mile (9 km) section between White Pine and Morristown was paved between October 1935 and April 1936. Paving of the Jefferson County portion was completed in late 1936. By November 1926, concrete pavement on the portion of the route between Corbin and Barbourville in Kentucky was complete. In July 1928, all Dixie Highway signage on the route in Kentucky was removed and replaced with US 25E signage. All of US 25E was paved with asphalt, concrete, or treated macadam by the beginning of 1928. The route in Kentucky would be entirely paved by December 1934. During the Prohibition era of 1920–1933, the route from the Cumberland Gap to Tazewell, along with SR 33 from Tazewell to Knoxville, was part of the infamous "Thunder Road", which was used by bootleggers to illegally transport and trade moonshine across state lines. The story was later fictionally adapted into a 1958 crime drama film and song of the same name. By 1936, the Clinch River Valley portion of US 25E was relocated and reconstructed to make way for the valley's inundation as part of the Norris Dam project by the Tennessee Valley Authority (TVA). This project included the construction of two concrete deck girder bridges at Big Sycamore Creek in Claiborne County and Indian Creek in Grainger County, respectively. This project, including the new bridges, cost TVA a total of $17,000 (equivalent to $ in ). In 1941, the Bean Station–Holston River section of US 25E was also relocated by TVA for its Cherokee Dam hydroelectric project near Jefferson City. TVA constructed a new truss bridge over the Holston River carrying US 25E between the Grainger and Hamblen county line and relocated US 25E east of its original intersection at US 11W in the old town of Bean Station, close to the Grainger and Hawkins county border. The reconstruction of US 25E would cost TVA $871,600 (equivalent to $ in ) and an additional $602,500 (equivalent to $ in ) for the Holston River bridge between Bean Station and Morristown. US 25E between Middlesboro and the Cumberland Gap was reconstructed to add a truck climbing lane in 1953. In November 1955, KYTC announced a $3 billion (equivalent to $ in ) 20 year comprehensive plan for statewide roadway improvements, including a proposal for US 25E to become a four lane median divided limited access highway for its entire length in the state. In December 1958, a 5.2 mile (8 km) relocation of US 25E in Kentucky from Barbourville northbound to Garrich (6 mile (10 km) west of Gray) was awarded to Oman Construction of Nashville for a cost of $2.297 million (equivalent to $ in ). Relocation work on a 5 mile (8 km) section south of Barbourville to Bimble was announced in 1962.

With the increased use of the corridor, many portions of US 25E gradually became deficient, leading to plans for its widening and relocation. In 1965, the US 25E corridor from the proposed I 75 in North Corbin to the proposed I 81 in Morristown was proposed as Corridor S of the ADHS, which was created by the Appalachian Regional Development Act that year. Kentucky officials asked for the designation in Kentucky to be removed, with Corridor S only designated on US 25E in Tennessee. This extension was completed by 1970. US 25E was also reconstructed to a four lane with a partial cloverleaf interchange at I 81 near the Witt area of Hamblen County south of Morristown in Tennessee. The contract to construct the related section of I 81 between the southern terminus with I 40 and US 25E near Morristown was awarded in June 1964 and completed in December 1966, along with the connecting section of I 40.

For the Clinch Mountain section of US 25E, TDOT engineers finalized two design alternatives, a dual bore tunnel through the mountain which reduced environmental impacts to the landscape, or a deep cut along the mountain slope providing scenic views of the Clinch Mountain ridge. Citing the high cost of the tunnel proposal and local business opposition, TDOT decided on a deep cut. Work on the 5 mile (8 km) connecting section from the summit to south of the Clinch River began in early 1977. Both projects ran into extensive geological problems, which delayed their completion, and increased the cost of the first contract from an initial bid amount of $5.1 million to $10 million. (equivalent to $ to $ in ). The project between US 11W at Bean Station and the gap at Clinch Mountain was completed in July 1980. By 1976, the work on this section in Claiborne County and part of Virginia was complete.

Citing congestion and increased heavy truck traffic on Cumberland Street/Buffalo Trail, the existing alignment of US 25E through Morristown's downtown and central business district was highlighted for replacement with a new four lane partial controlled access highway known as the Morristown Bypass to remove heavy truck traffic through downtown Morristown as part of the ADHS plan. In the Morristown Bypass, US 25E was realigned east of its original alignment through Morristown's central business district. Four interchanges were constructed, including a partial cloverleaf interchange at SR 160, two partial cloverleaf interchanges at US 11E (East Morris Boulevard and Andrew Johnson Highway), and an incomplete half Y interchange at Buffalo Trail, US 25E's then existing alignment. The Morristown Bypass was completed by 1977. By the completion of the Morristown Bypass, a new bridge over the Holston River between Bean Station and Morristown was announced for construction bids, at a preliminary cost of $8.25 million (equivalent to $ in ) for the new four lane bridge alone. The new bridge would be complete by 1980. By this time, US 25E in Kentucky had been widened to four lanes in several sections; Corbin to west Barbourville and south to Middlesboro. US 25E in its entirety in Kentucky would be widened to a four lane expressway by late 1993 to early 1994 to prepare for the Cumberland Gap Tunnel's completion. Tennessee transportation personnel proposed plans in 1979 to rename US 25E to US 25, as US 25W had largely paralleled or was concurrent to the I 75 corridor. The plan, however, was dismissed following dissent from Kentucky officials. Throughout the 1970s to the 1990s, highway improvement projects conducted by a joint effort between TDOT, the FHWA, and ARC began to widen US 25E between the town of Cumberland Gap to I 81 south of the city of Morristown into a limited access and partial controlled access highway. Construction work on the 4.5 mile (7 km) section, in coordination with the widening of US 11W between US 25E at Bean Station and an existing four lane section was complete by the end of 1990. Construction work started on a new alignment for US 25E from the realigned US 11W to the southern base of Clinch Mountain by 1995. It was completed in 1998 with a trumpet interchange at the eastern concurrency terminus of US 11W with an incomplete interchange at the western concurrency terminus of US 11W, with two new bridges at Briar Fork Creek for US 11W westbound towards Knoxville. With the signing of ISTEA in 1991, the US 25E corridor from I 75 at Corbin to I 81 at Morristown was designated as High Priority Corridor 12, making it as part of the National Highway System. With ISTEA, any future projects on the corridor of US 25E became eligible to federal funding up to 80 percent, with the states of Tennessee and Kentucky having to provide the remaining 20 percent.

By 1992, funding for the survey and design of US 25E between Tazewell and the Springdale community in Claiborne County was allocated by Governor Ned McWherter's state budget. In 1994, TDOT would announce a multi stage plan to widen and relocate a 18.2 mile (29 km) section US 25E between Thorn Hill in Grainger County to south of Harrogate in Claiborne County to prepare for the completion of the Cumberland Gap Tunnel. The project would be split into four sections, from north of Indian Creek to the Clinch River in Grainger County, from the Clinch River to south of Tazewell, a 0.9 mile (1 km) bypass around Tazewell until Anders Street, and from Anders Street to an existing four lane section south of Harrogate. Before the completion of the Cumberland Gap Tunnel, US 25E saw increased congestion following an uptick in truck traffic bypassing I 75 through Campbell County and Knoxville. The route is considered an alternate corridor of I 75 attractive to commuters to regional metropolises such as Morristown and Corbin–North Corbin and truckers alike connecting to I 81 and I 75, bypassing the congested stretch of I 75 in Knoxville and the stretch north of Knoxville through the Cumberland Mountains, which is prone to rockslides.

In the mid to late 20th century, US 25E between Middlesboro and Cumberland Gap had seen an uptick in fatal collisions, with the stretch of highway through the Cumberland Gap nicknamed "Massacre Mountain". In 1973, officials with the National Park Service (NPS) received initiatives to construct tunnels underneath the Cumberland Gap in order to resolve the accidents and restore the Cumberland Gap to its pioneer era state of the 1770s, a motion set forth by the establishment of the Cumberland Gap National Historical Park by Congress in 1940. The plan, consisting of the construction of twin 4600 feet (1402 m) tunnels, 5 mile (8 km) of new a four lane controlled access US 25E, two interchanges, seven bridges, and the restoration of the Cumberland Gap, was presented with a cost of $265 million (equivalent to $ in ) and was led by joint effort between the NPS and FHWA. Design work for the project started in 1979, and construction on the tunnels and the new four lane US 25E began in 1985. The Cumberland Gap Tunnel would open in 1996, completely bypassing Cumberland Gap and Virginia.

Since the 2000s, congestion from truck and commuter traffic and the issue of access control has brought several projects in Tennessee and Kentucky on upgrading US 25E up to Interstate Highway standards. Kentucky transportation officials cited the route as a "travel corridor the Eastern Seaboard (via connection to Interstate 40 and Interstate 81 in Tennessee) for through traffic". Construction work on a new split single point urban interchange at College Park Drive near WSCC for US 25E started in Morristown on September 2, 2011, by general contractor Summers Taylor, Inc., of Elizabethton. The project, consisting of lowering the grade of US 25E, constructing two frontage roads and three bridges, was completed on October 24, 2015, at a cost of $17.28 million (equivalent to $ in ). Between September 2011 and June 2014, US 25E at I 81 exit 8 was modified in a project that replaced the southbound loop onramp with a traditional diamond bridge ramp, widened the radius of the northbound loop exit ramp, replaced the US 25E overpass with a four lane bridge, and added turn lanes at the intersections with the ramps. This project was necessitated by the hazardous conditions of the previous two lane configuration, and the adoption of US 25E as part of an alternate route to I 75. In 2017, design work started on an intersection relocation project of SR 131 near Thorn Hill in Grainger County at US 25E, which shifted the eastern and western junctions of SR 131 north and south of each other, respectively. The project was completed in July 2021 by contractor Charles Blalock and Sons, Inc., at a bid price of $3.98 million. In February 2018, KYTC started work on a widening and access management project on US 25E between the US 25/US 25W terminus and the intersection at KY 3041 (Corbin Bypass). With a cost of $8.8 million (equivalent to $ in ), the project consisted of the removal of existing traffic lights and being replaced with restricted J turn intersections, new frontage roads, and the widening of US 25E from four to six lanes, being completed in 2020. As of 2013, 26.5 mile (43 km) has been completed of Corridor S along US 25E, while 22.2 mile (36 km) remains to be constructed, which consists of rest areas and design and construction of interchanges to meet Interstate Highway standards along the stretch of US 25E labeled corridors F and S.