These new fiber strands will offer increased speed and capacity and will be operational by the end of the year, the company said in a news release.
"It's been more than a decade since the last fiber cables were installed along this 351-mile corridor," Parallel Infrastructure President and CEO Frank Chechile said. "These new low-latency strands can transfer large amounts of data faster and are in high demand."
The network system will serve telephone, utility and cable companies; data centers; and other organizations that transmit large amounts of data on a regular basis.
Parallel Infrastructure manages a total of 1,700 miles of right-of-way corridor across 22 states on behalf of railroad landowners. The company is investigating plans to construct similar fiber-optic networks along these routes over the next 24 months.
Another dark fiber company, Allied Fiber LLC, last month announced it would also run cables through Jacksonville along railroad right-of-way. That project will extend from Miami to Atlanta and connect to a national network.
In April, CenturyLink connected its fiber-optics network to two third-party data centers in Jacksonville, in competition with such providers as AT&T and Verizon.