State Routes of Washington State 1:500,000 (2025), Routes

3/14/1997 - Michelle Blake The source file state.dgn was digitized from various printed maps--principally the USGS Washington State wall map--using Intergraph Microstation software. Srclean.dgn contains state.dgn state routes depicted as single lines. In cases where highways are divided and intersect with other SR's, the intersection of the increasing sides were chosen for depiction. The srclean.dgn file was converted into an Arc/Info coverage with the Arc "IGDSARC" command. Attributes storing the beginning and ending route measures for each line were added using custom menus in "ARCEDIT," and routes were created with the "ARCSECTION" command. The coverage was transformed to geographic coordinates using Arc commands "PROJECTDEFINE" and "PROJECT." This produced the 1996 LRS. 01/15/1999 - Thomas A. Blake The 1998 version of this data set was updated with the changes that had occurred to the State Highway System. This update was reflected in the 1998 LRS. 10/23/2001 - Thomas A. Blake The 2000 version of this data set was updated with the changes that had occurred to the State Highway System. This update was reflected in the 2000 LRS. 12/01/2004 - Heather Spates The 2001 version of this data set was updated with the changes that had occurred to the State Highway System. The data was projected from geographic coordinates to Washington State Plane South NAD 83. This update was reflected in the 2003 LRS. 01/16/2006 - Heather Spates Ferry Terminals located in the TRIPS systems and selected Proposed routes (found in both TRIPS and other records) are included in this edition. Ferry Terminals were located via orthophotos on the end of cartographically drawn ferry routes. Proposed route linework are compiled from paper contract sheets. This update was reflected in the 2004 LRS 2/6/2006 - Heather Spates The LRS data was edited to reflect changes in the state highway system according to the 2005 Washington State Road Log. This update was reflected in the 2005 LRS. 07/24/2006 - Jordyn Mitchell 4 new attributes were added with the 2006 update. SRID, RID, RRT, RRQ. These were added to enable easier sorting and selecting of records. These were derived from the SR field. This update was reflected in the 2006 LRS. 05/21/2008 - Julie Fogde The 2007 LRS is an update of the 2006 LRS. A copy of the Lines file of the 2006 LRS was updated using the 2007 Highway Log, GPS LRS, orthophotos, highway contract plans, and WSDOT project websites. Polylines were then broken out by direction and built into routes. This update was reflected in the 2007 LRS. 06/03/2009 - Derek Drake The LRS data was edited to reflect changes in the state highway system according to the 2008 Washington State Road Log. This update was reflected in the 2008 LRS. 05/25/2010 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2009 Washington State Road Log. A new attribute LRS Date was added to indicate the valid date of the measures (ARMs) used to update the data set. This update was reflected in the 2009 LRS. 03/31/2011 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2010 Washington State Road Log. This update was reflected in the 2010 LRS. 11/15/2011 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the Washington State Highway Log as of 9/30/2010. 04/15/2012 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2011 Washington State Road Log. This update was reflected in the 2011 LRS. 06/15/2012 - Thomas A. Blake The Region attribute along US 12 was updated to reflect a WSDOT Region Boundary change between the Southwest and South Central regions. No other changes were made. 03/15/2013 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2012 Washington State Road Log. This update was reflected in the 2012 LRS. 04/05/2014 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2013 Washington State Road Log. This update was reflected in the 2013 LRS. 3/15/2015 - Jordyn Mitchell All LRS data stored in SDE was migrated to a new server. Several attributes (SR, SRID, RRT, RRQ) were dropped, replaced, or recalculated to conform to a consistent schema. 04/01/2015 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2014 Washington State Road Log. This update was reflected in the 2014 LRS. 04/01/2016 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2015 Washington State Road Log. This update was reflected in the 2015 LRS. 03/01/2017 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2016 Washington State Road Log. This update was reflected in the 2016 LRS. 02/01/2018 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2017 Washington State Road Log. This update was reflected in the 2017 LRS. 04/15/2019 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2018 Washington State Road Log. This update was reflected in the 2018 LRS. 04/15/2020 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2019 Washington State Road Log. This update was reflected in the 2019 LRS. 03/15/2021 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2020 Washington State Road Log. This update was reflected in the 2020 LRS. 03/15/2022 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2021 Washington State Road Log. This update was reflected in the 2021 LRS. 03/27/2023 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2022 Washington State Road Log. This update was reflected in the 2022 LRS. 03/22/2024 - Thomas A. Blake The LRS data was edited to reflect changes in the state highway system according to the 2023 Washington State Road Log. This update was reflected in the 2023 LRS. 04/07/2025 - Daniel Keller - The LRS data was edited to reflect changes in the state highway system according to the 2024 Washington State Road Log. 04/23/2026 - Daniel Keller - The LRS data was edited to reflect changes in the state highway system according to the 2025 Washington State Road Log.