International Airport before crossing a bridge over the Thomas Creek where it crosses the Duval-Nassau County Line, and ending at New Kings Rd (US 1/US 23) in Callahan. The northern segment has the same function as the southern, except that it is built to lower standards and carries traffic south from the densely populated areas northwest of downtown into the heart of the city. Northbound, it is also an alternative to US 1/US 23 as a route to Callahan. Exit list SR 115A Two unsigned sections of State Road 115A (SR 115A) exist in close proximity to each other east of Downtown Jacksonville. One is the approximately stub of MLK Parkway south of SR 115; the other carries US 1 Alt. for between the Hart Bridge (SR 228) and MLK Parkway (SR 115). Some sources (including FDOT's straight line diagrams) indicate a third SR 115A on the ramps connecting SR 115 to I-95 at exit 340. References 115 115 115 115