SR 146: A Route Through Cannon and DeKalb Counties
State Route 146 (SR 146) serves as a vital connector across the scenic landscapes of Middle Tennessee, traversing both Cannon and DeKalb counties. From its rural beginnings in the Bluewing community to its urban terminus in Smithville, the route offers a transition from agricultural heartlands to bustling business districts.
Key Facts
- Southern Terminus: Intersection with US 70S / SR 1 in Bluewing, Cannon County.
- Northern Terminus: Intersection with US 70 / SR 26 in Smithville, DeKalb County.
- Primary Local Names: Short Mountain Road, Short Mountain Highway, and South Mountain Street.
- Key Intersections: SR 281 and SR 83.
- Geographic Feature: Winds around the southeastern edge of the Highland Rim and Short Mountain.
Route Progression and Geography
The journey of SR 146 begins in Cannon County at the intersection of US 70S and SR 1. Initially known as Short Mountain Road, the highway heads north through the community of Center Hill, where it meets SR 281. This segment of the road is characterized by its passage through expansive farmland along the southeastern edge of the Highland Rim—a plateau region known for its distinct geological elevation.
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As the route continues, it shifts direction, turning east and then northeast to navigate the terrain surrounding Short Mountain. Upon crossing into DeKalb County, the road is renamed Short Mountain Highway. It continues its northeasterly trajectory through the community of Bluhmtown and serves as the southern terminus for SR 83.
Entering Smithville
As SR 146 enters the city of Smithville, the road undergoes a significant transition. It widens to four lanes and incorporates a center turn lane to accommodate increased traffic. In this urban stretch, the route is known as South Mountain Street. It passes through residential neighborhoods and a business district before reaching its northern end at US 70 / SR 26, located just south of the downtown area.
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Historical Alignment Changes
The current path of SR 146 is not identical to its original layout. Previously, the Cannon County portion extended approximately 1,000 feet (300 meters) further south from its current starting point. This specific section was de-designated as part of SR 146 following the relocation of US 70S to a new four-lane alignment further north.
Route Summary Table
| Segment/Location | County | Local Road Name | Key Connection |
|---|---|---|---|
| Southern Start | Cannon | Short Mountain Road | US 70S / SR 1 |
| Center Hill | Cannon | Short Mountain Road | SR 281 |
| Bluhmtown Area | DeKalb | Short Mountain Highway | SR 83 (Southern Terminus) |
| Smithville | DeKalb | South Mountain Street | US 70 / SR 26 |
Frequently Asked Questions
Where does SR 146 begin and end?
SR 146 begins at the intersection of US 70S and SR 1 in the Bluewing community of Cannon County and ends at US 70 / SR 26 just south of downtown Smithville in DeKalb County.
What are the different names of SR 146 along its route?
The route is known as Short Mountain Road in Cannon County, Short Mountain Highway as it enters DeKalb County, and South Mountain Street once it enters the city of Smithville.
Which other state routes intersect with SR 146?
SR 146 intersects with SR 281 in Center Hill and serves as the southern terminus for SR 83 before reaching Smithville.
How has the southern terminus of SR 146 changed over time?
The route was previously extended about 1,000 feet (300 meters) further south in Cannon County, but this section was removed from the SR 146 designation when US 70S was moved to a new four-lane alignment.
What is the road configuration in Smithville?
Within Smithville, SR 146 widens to four lanes and includes a center turn lane to support the local business district and residential neighborhoods.