UPDATE 2-CSX outlines path forward after death of former CEO Harrison

(Adds details on capital expenditure in paragraph 5; federal scrutiny in paragraph 8)

March 1 (Reuters) - U.S. railroad operator CSX Corp on Thursday reaffirmed its longer-term plan for boosting profitability and outlined financial targets for the next two years, ahead of its first investor day following the death of former chief executive, Hunter Harrison.

Harrison, a favorite of investors who had led turnarounds at two Canadian railroads, died in December just eight months into an overhaul that included deep job cuts, the shutting of rail yards, mothballing locomotives and running trains on tight schedules rather than based on customer needs.

The new CEO, Jim Foote, and his management team are scheduled to address investors at a conference in New York on Thursday.

The railroad reaffirmed that it would substantially lower its operating ratio - a closely watched measurement of profitability to 60 percent by 2020 from 67.9 percent at year-end 2017. The operating ratio is a measure of operating expenses as a percentage of revenue.

Jacksonville, Florida-based CSX said it expected revenue growth at a compound annual rate of 4 percent in 2019 and 2020, and would invest $1.6 billion in average annual capital expenditure through 2020.

CSX said it expected cumulative free cash flow of $8.5 billion from 2018 to 2020 and average annual capital expenses of $1.6 billion through 2020.

CSX shares have surged about 50 percent since January 2017 and about 12 percent since March 2017 after Harrison took over as CEO following a high-stakes push by activist investor Paul Hilal of investment fund Mantle Ridge LP.

But CSX's share growth has come amid depleted rail service and federal scrutiny.

Many rail customers have seen persistent service disruptions and delays that have raised shipping costs.

Several shippers have told Reuters that service has been steadily improving from a nadir last summer, although companies like U.S. agricultural firm Cargill Inc and coal company Murray Energy Corp are still struggling with crew and rail car shortages. (Reporting by Eric M. Johnson in Seattle and Arunima Banerjee in Bengaluru Editing by Bernard Orr and Bernadette Baum)