List of NJ Transit bus routes (1–99)
Northern Division

Route
Terminals
Terminals
Major streets
History
6
Journal Square
Jersey City-Greenville Merritt Street or Lafayette Loop
Ocean Avenue
Formerly Lafayette & Greenville Bus' #3 Ocean Avenue line, later Red & Tan's #99 line.
72
Paterson Broadway Bus Terminal
Newark Penn
Bloomfield Avenue, Broad Street
PSCT started operating buses in 1927 and added express buses in 1951. Formerly 126/128.
74
Paterson Broadway Bus Terminal
Branch Brook Park
Main Street/Main Avenue (all trips) Kingsland Street/Kingsland Road (all trips) Delawanna Avenue and Clifton Commons (select trips) Washington Avenue (select trips) Union Avenue (select trips) Franklin Avenue (most trips)
PSCT started operating buses in 1927.
80
Jersey City-Greenville Gates Avenue
Exchange Place or Journal Square (Weekday Rush Hours)
Seaview Avenue, Romar Avenue, West Side Avenue, Newark Avenue, and Montgomery Street
PSCT all service vehicles replaced Public Service Railway's Newark Avenue Line streetcars in 1938; replaced by buses in 1947. Formerly route 9 Newark Avenue.
81/81X (X trips rush hours only)
Bayonne 1 Street and Avenue C
Exchange Place
Avenue C, New Jersey Turnpike (X trips only), Ocean Avenue (full-time), Montgomery Street
PSCT all service vehicles replaced Public Service Railway's Greenville Line streetcars in 1937; replaced by buses in 1947. Formerly route 14/14X Greenville.
82 (weekday rush hours only)
Union City Summit Avenue & Paterson Plank Road
Exchange Place
Transfer StationSummit Avenue, Newark Avenue, and Montgomery Street
PSCT buses replaced Public Service Railway's Hudson Line streetcars in 1931. Formerly route 18 Hudson.
83
Hackensack Transfer
Journal Square
Main Street, U.S. Route 46, Tonnelle Avenue, Bergen Turnpike, Summit Avenue, and Westside Avenue *(On selected Weekday Rush Hour trips only)
PSCT started operating buses in 1928. Formerly route 124.
84
Journal Square
North Bergen Nungesser's
Newark Avenue, Palisade Avenue, Park Avenue, and Bergenline Avenue
PSCT started operating buses in 1927. Formerly route 44 Bergenline / Park Avenue.
85
Hoboken Terminal
Secaucus-Mill Creek
Observer Highway, Paterson Plank Road, Transfer Station, Summit Avenue, Union Turnpike, Bergen Turnpike, Plaza Drive, and Harmon Meadow
PSCT all service vehicles replaced Public Service Railway's Passaic Line streetcars in 1936; replaced by buses in 1947. Formerly route 15 Passaic.
86
Newport Centre Mall
Bergenline Avenue and 49th Street via Exchange Place* *Exchange Place on Weekday Rush Hour Only
Newark Avenue, Palisade Avenue, Park Avenue, Bergenline Avenue
NJ Transit started operating buses in 1991, variant of the 84
87
Jersey City-Greenville Gates Avenue
Hoboken Terminal
Old Bergen Road, MLK Drive, Bergen Avenue, Central Avenue, Palisade Avenue, Paterson Plank Road
PSCT buses replaced Public Service Railway's Jackson Line streetcars in 1947. Formerly route 7 Jackson & 8 Jackson Express.
89/info
North Bergen Nungesser's
Hoboken Terminal
Park Avenue, Washington Street, Bergenline Avenue
PSCT buses replaced Public Service Railway's Union City Line streetcars in 1949. Formerly route 19/26 Union City.

Question: Which NJ Transit bus routes service Bergenline Avenue? 
Answer: Bergenline Avenue is served by New Jersey Transit buses via 84, 86, and 89 routes.