Con Edison is working with Orange and Rockland Utilities to undertake a $6.6 million electric service project improvement this week on the electric system transmission lines that span the Hudson River between Stony Point in Rockland County and Buchanan in Westchester.

Local residents on both banks of the river can expect to see O&R and Con Ed employees and contractors working near the tops of the towers by helicopter and around the base of the towers seven-days-a-week from 8 a.m. to 7 p.m. from March 11 through April 2, conditions permitting.

Con Ed says the two 475-feet-tall tranmission towers were built in the 1960's to interconnect the transmission system of O&R and Con Edison. The towers were then modified in the early 1970's when the capacity of the transmission cables, which run some 6,800 feet across the Hudson River, was increased.

Both Con Edison and O&R are subsidiaries of Consolidated Edison, Inc., one of the nationn's largest investor-owned energy companies with $13 billion in annual revenues and $36 billion in assets.