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Home >Maine's Transportation Systems >Route Number Designations

Route Number Designations

In Maine, there are two route numbering systems used on thousands of miles of public roads.  One is the US Route Numbering system and the second is the State Route Numbering system. These numbered routes exist on the Federal and state highway systems with a couple minor exceptions.  However, not all State roads have a route number on them.

US Route Numbering System

This is a state route signThe US Route Numbering system primarily exists on the National Highway System (NHS) and other arterial highways in Maine.  They are governed by the American Association of State Highway Transportation Officials (AASHTO).

Whenever a change is needed on these routes, an application has to be submitted by MaineDOT to AASHTO for review and approval. Signs are typically a black number on a white shield on a rectangular sheet.

State Route Numbering System

This is a US route signThe State Route Numbering system exists on many other miles of arterials and collector roads across the state. They are governed solely by MaineDOT. The current system has evolved over many decades and there are many overlaps and redundancies across the system. Some roads have one number on them while others may have up to 4 numbers on them simply because they intersect as they pass through Maine towns and cities. Whenever a change is needed on these routes, MaineDOT reviews the criteria for route numbering, accepts public comment, and makes a decision that provides the shortest, most direct path to the travelling public. Signs are typically a black number on a white background on a rectangular sheet.

Current US Route Numbers in Maine

  • 1 from Kittery to Ft Kent
  • 2 from Gilead to Vanceboro
  • 95 from Kittery to Houlton
  • 195 from Maine Turnpike in Saco to Route 1
  • 201 Brunswick through Skowhegan to Quebec line
  • 202 So. Lebanon (NH line) to Bangor
  • 295 Maine Turnpike in Falmouth to Gardiner
  • 302 Portland to Fryeburg and NH line
  • 395 I-95 in Bangor east to Brewer’s Route 1A
  • 495 Falmouth Spur
  • Derivatives of the primary numbers above
    • 1 Bypass from ME-NH border to Kittery (jct. Rte. 1)
    • 1A from York Village area in York (jct. Rte.1) to Cape Neddick area in York (jct. Rte. 1)
    • 1A from I-295 (and Rte. 1), Exit 4 in Portland to I-295 (and Rte. 1), Exit 7 in Portland
    • 1BUS from Newcastle (jct. Rte. 1) to Damariscotta (jct. Rte. 1)
    • 1A from Rte. 1 (Park St.) in Rockland to Rte. 1 (Camden St.) in Rockland
    • 1A from Stockton Springs (jct. Rte. 1) to Ellsworth (jct. Rte. 1 and S.R. 3)
    • 1A from Milbridge (jct. Rte. 1) to Harrington (jct. Rte. 1)
    • 1A from Jonesboro (jct. Rte. 1) to Machias (jct. Rte. 1)
    • 1A from Mars Hill (jct. Rte. 1) to Van Buren (jct. Rte. 1)
    • 2A from Orono (jct. Rte. 2) to Old Town (jct. Rte. 2)
    • 2A from Macwahoc (jct. Rte. 2) to Houlton (jct. Rtes. 1 and 2)
    • 201A from Skowhegan (jct. Rte. 2, 201) to Solon (jct. Rte. 201)

Current State Route Numbers in Maine

  • 3, 4, 5, 6, 7, 8, 9
  • 10, 11, 12, 15, 16, 17
  • 22, 23, 24, 25, 26, 27
  • 32, 35, 37
  • 41, 43, 46
  • 52
  • 69
  • 73, 77
  • 85, 86, 88, 89
  • 90, 91, 92, 93, 94, 96, 97, 98, 99
  • 100, 101, 102, 103, 104, 105, 106, 107, 108, 109
  • 110, 111, 112, 113, 114, 115, 116, 117, 118, 119
  • 120, 121, 122, 123, 124, 125, 126, 127, 128, 129
  • 130, 131, 132, 133, 134, 135, 136, 137, 138, 139
  • 140, 141, 142, 143, 144, 145, 146, 148, 149
  • 150, 151, 152, 153, 154, 155, 156, 157, 158, 159
  • 160, 161, 162, 163, 164, 166, 167, 168, 169
  • 170, 171, 172, 173, 174, 175, 176, 177, 178, 179
  • 180, 181, 182, 183, 184, 185, 186, 187, 188, 189
  • 190, 191, 192, 193, 194, 195, 196, 197, 198, 199
  • 200, 203, 204, 205, 206, 207, 208, 209
  • 210, 212, 213, 214, 215, 216, 217, 218, 219
  • 220, 221, 222, 223, 224, 225, 226, 227, 228, 229
  • 230, 231, 232, 233, 234, 235, 236, 237, 238
  • Derivatives of the primary numbers above
    • 4A, 5A, 9A, 11A, 11BUS, 15BUS, 25BUS, 35A, 100A, 102A

 

This page last updated on 1/29/14