List of former New Brunswick provincial highways

Standard highway markers for New Brunswick
Highway names
Provincial Highways	New Brunswick Route XX (Route XX)

Until 1965, New Brunswick highways were numbered consecutively from 1 to 42. A massive renumbering led to the current three-tier system. Some changes have taken place to highway numbering since then, and the following numbers are no longer used:

• Route 2A
• Route 2B
• Route 5 -- Original route now designated as Route 555; Route 5 realigned and renumbered as Route 95.
• Route 6 (1927-1965)
• Route 6 (1965-1984) -- Designated as Route 106 in 1984.
• Route 9
• Route 9A
• Route 12 (1927-1965)
• Route 12 (1965-1976) -- Fredericton - Oromocto (Vanier Highway)
• Route 13 -- Now designated as Route 113.
• Route 14 (1927-1965)
• Route 14 (1965-1984)
• Route 18
• Route 19
• Route 20
• Route 20A
• Route 21
• Route 22
• Route 23
• Route 24
• Route 25
• Route 25A
• Route 26
• Route 27
• Route 28
• Route 29
• Route 30
• Route 31
• Route 32
• Route 33
• Route 34
• Route 35
• Route 36
• Route 37
• Route 38
• Route 39
• Route 40
• Route 41
• Route 42
• Route 96 (unsigned) -- Royree Road (2 km west of New Brunswick Route 720) - Route 3 in St. Stephen, New Brunswick (via St. Stephen Drive; now entirely absorbed by Route 1)
• Route 125 -- Perth-Andover - Grand Falls (Now part of Route 105)
• Route 142 -- Saint John - Grand Bay (via Westfield Road)
• Route 191 -- Bathurst - Janeville (via Bridge Street/Cape Road)
• Route 192
• Route 270 -- Campbellton - Val d'Amour - Route 275 (via Val d'Amour Road)
• Route 393 -- Plaster Rock - Hazeldean (Now part of Route 108)
• Route 520
• Route 545
• Route 650
• Route 660 -- Oromocto - Geary - Blissville (via Broad Road/Branch Road)
• Route 685
• Route 765 -- Lawrence Station - Waweig (Now part of Route 127)
• Route 810
• Route 930 -- Upper Sackville - Haute Aboujagane (via Upper Aboujagane Road)