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These commonly requested maps show reference markers for each county in Texas and are used for a wide variety of purposes both inside and outside TxDOT.

A reference marker is a small green placard displaying a three-digit number that’s placed at intervals along all state-designated routes in Texas. Reference markers are used by TxDOT and the Texas Department of Public Safety as general reference points for identifying locations of vehicle incidents or roadway work.

This map series is produced annually following the publication of end-of-year data from the previous calendar year.

Each zip file contains multiple county-level maps within each TxDOT district.

TxDOT Reference Markers Maps

District ZIP
Abilene Adjacent or Connecting Projects ZIP
Amarillo Adjacent or Connecting Projects ZIP
Atlanta Adjacent or Connecting Projects ZIP
Austin Adjacent or Connecting Projects ZIP
Beaumont Adjacent or Connecting Projects ZIP
Brownwood Adjacent or Connecting Projects ZIP
Bryan Adjacent or Connecting Projects ZIP
Childress Adjacent or Connecting Projects ZIP
Corpus Christi Adjacent or Connecting Projects ZIP
Dallas Adjacent or Connecting Projects ZIP
El Paso Adjacent or Connecting Projects ZIP
Fort Worth Adjacent or Connecting Projects ZIP
Houston Adjacent or Connecting Projects ZIP

 

District ZIP
Laredo Adjacent or Connecting Projects ZIP
Lubbock Adjacent or Connecting Projects ZIP
Lufkin Adjacent or Connecting Projects ZIP
Odessa Adjacent or Connecting Projects ZIP
Paris Adjacent or Connecting Projects ZIP
Pharr Adjacent or Connecting Projects ZIP
San Angelo Adjacent or Connecting Projects ZIP
San Antonio Adjacent or Connecting Projects ZIP
Tyler Adjacent or Connecting Projects ZIP
Waco Adjacent or Connecting Projects ZIP
Wichita Falls Adjacent or Connecting Projects ZIP
Yoakum Adjacent or Connecting Projects ZIP

Divisions