Mississippi Highway 15 (MS 15) is a state-maintained north–south highway in the U.S. state of Mississippi. It is part of the Mississippi State Highway System and is owned and operated by the Mississippi Department of Transportation (MDOT).
Route description
- General orientation: The highway runs predominantly in a north‑south direction across the central portion of Mississippi.
- Southern terminus: At the Louisiana state line, where the roadway continues as Louisiana Highway 15.
- Northern terminus: At the Tennessee state line in the north‑western part of the state, where the route transitions to Tennessee State Route 22.
- Length: Approximately 215 mi (346 km).
- Counties served: The route passes through a series of counties, including (from south to north) Claiborne, Copiah, Simpson, Rankin, Montgomery, Clay, and Chickasaw, among others.
- Key communities: Along its alignment MS 15 provides access to towns such as Centreville, McComb, Brookhaven, Hazlehurst, Jackson (via a brief concurrency with US 49/US 84), and Starkville.
- Major junctions: The highway intersects several primary highways and interstates, notably:
- US 61 near the southern end,
- I‑55 near McComb,
- I‑20 near Jackson,
- US 49/US 84 in the Jackson area,
- I‑55 again near Jackson’s northern periphery,
- US 82 in the vicinity of Greenwood,
- US 278 near Starkville,
- I‑22/US 78 near the northern terminus.
The roadway is signed with a white numeral “15” on a black shield, consistent with Mississippi’s state‑highway signage.
History
- Establishment: MS 15 was designated as part of the original Mississippi state‑highway system in the early 1930s (1932).
- Development: Over subsequent decades the alignment has been realigned in several sections to improve travel efficiency, accommodate interstate construction, and bypass congested urban areas. Notable improvements include the construction of divided‑highway segments near Jackson and Starkville.
- Recent changes: The most recent major upgrade was completed in the early 2020s, when MDOT resurfaced several miles of the highway and added safety shoulders in the Montgomery‑Clay county corridor.
Significance
MS 15 functions as a regional connector, linking small towns to larger urban centers and providing an alternative to the interstate system for intra‑state travel. It supports local commerce, agricultural transportation, and offers access to educational institutions such as Mississippi State University near Starkville.
References
- Mississippi Department of Transportation, Mississippi Highway Map (latest edition).
- MDOT State Highway Log (2023).
- Historical records from the Mississippi State Archives, Highway Designation Files.
(All information is drawn from publicly available state transportation documents and historical records. No speculative content is included.)
