"existing main" is a correct and usable phrase in written English.
It is typically used when referring to the main or central element of something that has been in place for an extended period of time. For example, "The existing main artery of the city is filled with traffic congestion."
Sixty years after the idea was first mooted, Gatwick's owners are proposing a new runway to the south of the existing main runway.
I believe that there is an entirely opposite smart growth potential of revitalizing existing towns and villages with the same program of new higher density residential zoning on and adjacent to existing "main streets".
A second high-speed line, the TGV-Atlantique, from Paris to junctions near Le Mans and Tours with existing main lines serving western France, was opened in 1989 90.
"In New York State, we have a law: we have to bring 100 feet of main and 100 feet of service free" to connect a home to an existing main.
WHAT: Three-bedroom house, with two guest houses HOW MUCH: $7,000,000 PER SQUARE FOOT: $1,707 This 35-acre waterfront estate on Lake Travis is covered by a conservation easement that allows four more residences to be built in addition to the existing main house and two guest houses.
The reason the government gives for rubbishing the existing main child poverty measure (children in households with income – not earnings, as repeatedly reported by the Guardian and the BBC – less than 60% of the median), is that it shows child poverty falling because median incomes have been falling.
The bottom two floors of the Urban building -- the base of the base -- will retain its existing program: main entrance and lobby on Eighth Avenue, shops along the street, subway connection in one corner.
Existing Android main memory forensics techniques are hardly being adopted in practical forensic investigations because they often require solving several usability constraints, such as requiring root privilege escalation, custom kernel replacement, or screen lock bypass.
To address this, we extend the existing two main families of image fusion approaches (i.e., component substitution, CS, and multiresolution analysis, MRA) with two different schemes, a band synthesis scheme and a band selection scheme.
His task will be "recommending how to create a universal, full-day early learning program for 4 and 5 year-olds from the existing two main program streams for this age group child care and kindergarten with all of the differences between them" (Mathien, 2008, April).
Celtic Park reopened with a friendly against Newcastle on 5 August 1995, with the new 26,970-capacity North Stand and the existing 7,850-capacity 7,850-capacitytand in place.
