All GDOT route ID’s in Numetric are unique 11 character strings which summarize all relevant data within the route, including the county code, route type/ownership, route number, route suffix, and direction.

The breakdown of the route ID is outlined below using the sample Route ID: 12310036NOI

County Code

The first three characters of every route ID make up the county code.

All GDOT counties are assigned a three-digit county code, starting with 001 and ending with 321, with only the odd numbers being used (E.g. 001, 003, 005, 007, etc.). 

Click here to download a list of all counties and their county code from the GDOT website.

Route Type/Ownership

The fourth character of every route ID makes up the route type or ownership.

Each route ID will have one of the following one-digit route type/ownership codes:

  • 1 - State Route
  • 2 - County Road
  • 3 - City Street
  • 6 - Ramo
  • 7 - Private Road
  • 8 - Public Road
  • 9 - Collector Distributor

Route Number

The fifth through eighth characters of every route ID make up the route number.

All routes are assigned four-digit route number ranging from 0000 - 9999 (e.g. 0001, 0101, 1001, etc.).

Route Suffix

The ninth and tenth characters of every route ID make up the route suffix.

Each route ID will have one of the following two-character route suffix codes:

  • 00-99
  • AL - Alternate
  • BU - Business
  • BY - Bypass
  • CO - Connector
  • DU - Duel
  • EA - East
  • SO - South
  • WE - West
  • NO - North
  • SP - Spur

Direction

The eleventh (last) character of every route ID makes up the direction.

The direction is either listed as I (indicating Inventory) or D (indicating divided opposite inventory direction).

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