"extensively modernized" is correct and usable in written English.
It can be used in any context where something has been thoroughly updated or brought up to current standards. Example: The old factory was extensively modernized with state-of-the-art technology and equipment, greatly improving its production efficiency.
A building that had been closed for a dozen years has been reopened, at a cost of $1 million, while others have been extensively modernized.
Her statewide reputation with voters as Ruth Ann was rooted in years of work in areas like education and public safety legislation, plus her serving as chairwoman of a commission that extensively modernized state agencies.
Relatively neglected from 1923 to 1939, the army underwent a rapid expansion during World War II and, after the war, was extensively modernized with the aid of U.S. advisers.
The port of Leith, about 30 miles (50 km) from the open sea, became part of the now eight-port Forth Ports Authority in 1968 and was extensively modernized in the 1970s.
The port of Leith, about 30 miles (50 km) from the open sea, became a part of the six-port Forth Ports Authority in 1968 and was extensively modernized in the 1970s.
Of course it would be silly to apply those exact same rules to a vastly different era — that's why we had the Telecommunications Act of 1996, which extensively modernized the original with new definitions and rules.
The Russian oil industry, though it is now connected to global technology and has modernized extensively over the past twenty years, has participated only up to a point.
Typically starting their journeys at such potent symbols of American infrastructural decay as Kennedy or Dulles airports, they land at Japanese airports that have been extensively expanded and modernized in recent years.
The Royal Navy, United States Navy, and Imperial Japanese Navy extensively upgraded and modernized their World War I era battleships during the 1930s.
The runner-up: Simon Russell Beale in a National Theatre Timonn of Athens," at once modernized and extensively filleted, that saw a sometimes-foppish actor in merciless form as a once-moneyed figure who turns with rabid ferocity on his onetime "friends".
Modernized physical environment The VET schools have been modernized (renovated facilities, modern equipment).
