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Road Data

Road Data

Traffic Counts

Automatic Traffic Recorders (ATR) – These are permanent roadside systems which collect a variety of traffic data. ATR systems use several different types of sensors and system electronics to record vehicle volume, length, speed, and some classification data. There are approximately 175 ATR’s located statewide. Monthly and annual reports are available for most ATR stations.

Weigh-In-Motion (WIM) – These are permanent roadside systems which collect axle weight data as well as vehicle volume, length, speed and classification data. There are 13 WIM systems located statewide. Monthly and annual reports are also available for most WIM stations.

ATR & WIM Data
There is a broad range of annual, monthly and specialty reports available for both ATR and WIM systems. There are also combination reports that provide statewide information. Use the selection procedure below to select, view and download ATR or WIM reports. Thank you for your interest in our data.

Select ATR and/or WIM data by:

Rural Traffic Flow (RTF) Maps – These annually published maps represent the culmination of all traffic data collection and analysis done by ITD statewide. Separate maps for each year include traffic volume counts for interstate interchanges. For the most recent years there are also separate maps and information for commercial vehicles.

These reports are maintained by the Idaho Transportation Department Roadway Data Section. For additional information please email: Raelene.Viste@itd.idaho.gov or Margaret.Pridmore@itd.idaho.gov

The mission of the Roadway Data Section is to provide efficient collection, analyses, reporting, and retention of valid statewide traffic data. We do this by providing accurate and timely information to ITD, the public, the private sector, and other governmental agencies. We also manage traffic-related databases, locate, design, and build our own traffic counting sites statewide, and integrate computer-assisted analysis with technical support.

Maps - GIS

The Geographic Information Systems (GIS) Section supports all Divisions within ITD. We have three distinct functions within the GIS Section:

  • Digital Mapping/Data – The GIS Group maintains and makes available statewide GIS datasets in support of all ITD Divisions. We maintain all enterprise GIS data in a Spatial Database Engine data store in a SQL underlying database. We support, build, and maintain enterprise, GIS enabled applications, data, and websites, both internal and external.
  • Local Roads Program – This program collects information from all local Highway Districts and County Road and Bridge Groups regarding miles of improved local roads that they maintain and are responsible for. This information is checked and entered into our GIS system. Annually we produce a certification of these mileages for the Department Director’s signature. This certification is then used throughout the following year to distribute State Highway Distribution Account monies to each of the local jurisdictions on a quarterly basis.
  • Linear Reference System – The GIS group maintains and updates a temporal Linear Reference System (LRS) for the Highways Division. The LRS defines a unique identifier and mile points for location of all sections of covered roads and highways throughout the State of Idaho. Milepoint Log is maintained as part of the LRS system.

GIS Data Download


Contact:
Geographic Information Section
Idaho Transportation Department

Email: GIS-info@itd.idaho.gov


Go to IPlan Maps to interact with the State of Idaho road system and administrative data. Map topics include:

  • Local Highway Districts
  • ITD Administrative and Maintenance
  • Metropolitan Areas
  • Statewide Boundaries
  • Idaho Scenic Byways
  • Idaho Ports of Entry
  • Idaho Railroads
  • Idaho State Highway System
  • Idaho Forest Highways

IPlan – Web-based Map Application

This program collects information from all local Highway Districts and County Road and Bridge Groups regarding miles of improved local roads that they maintain and are responsible for. This information is checked and entered into our GIS system. Annually we produce a certification of these mileages for the Department Director’s signature. This certification is then used throughout the following year to distribute State Highway Distribution Account monies to each of the local jurisdictions on a quarterly basis.

Data Disclaimer

  • The Idaho Transportation Department (ITD) provides this geographic data and any associated metadata “as is” without warranty of any kind, including but not limited to its completeness, fitness for a particular use, or accuracy of its content, positional or otherwise.
  • It is the sole responsibility of the user to determine the usability of the data for their purposes.
  • In no event shall ITD have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind arising out of the use of or reliance on the geographic data or metadata.
  • In providing this data or access to it, ITD assumes no obligation to assist the user in the use of such data or in the development, use, or maintenance of any applications applied to or associated with the data or metadata.

Map Disclaimer

  • Reasonable efforts have been made by the Idaho Transportation Department (ITD) to verify that these maps accurately interpret the source data used in their preparation; however, a degree of error is inherent in all maps, and these maps may contain omissions and errors in scale, resolution, rectification, positional accuracy, development methodology, interpretation of source data, and other circumstances.
  • As additional data become available to ITD, and as verification of source data continues, these maps may be reinterpreted or updated by ITD.
  • The maps are date specific and are intended for use only at the published scale.
  • These maps should not be used for navigational, engineering, legal, or any other site-specific use.
  • These maps are distributed “as is” without warranty of any kind.
  • These maps are not to be sold.

CADD

The Idaho Transportation Department purchased its first CADD equipment in 1984. Today, the system consists of some 150 PC-based workstations on a statewide network including a variety of support equipment and output devices.

The Department’s standard graphics package is MicroStation by Bentley Systems. The Department’s standard civil engineering products are the InRoads suite of products by Bentley Systems. The standard graphics files, symbol libraries, font libraries and other resource libraries used are also in native MicroStation file formats.

The files on this site are provided in their native file formats to assure that the information provided to the public and consultants is the same information used by the Department. Files are not translated to other CAD file formats (.iges, .dxf, .dwg, etc.) to eliminate the errors and omissions related to the translation process.

The ITD Corporate Workspace is a custom environment designed to facilitate CADD productivity and direct the user to ITD specific standards, workflows and procedures. The ITD Workspace is a set of configuration files, MicroStation and InRoads resource files, documentation, and customized tools, designed to work together to allow for development of a standardized project plan set. Some of the items included in the workspace are: seed files, cell libraries, DGN libraries, line style resource files, all border sheets, plan summary sheets and other sheets, design scripts, settings files, InRoads XIN files, ITD configuration files and documentation.

Transportation Systems CADD Files
Basic CADD Workspace and Files

The Idaho Transportation Department’s standard CAD drawings and supporting files are provided in their native MicroStation V8i file format, unless noted otherwise. All ITD CADD standards and supporting files are included in the ITD Corporate Workspace. All files are subject to change without notice. Questions regarding the use of this information should be directed to the ITD contract administrator.

*ATTENTION: ITD is now using a managed workspace inside of ProjectWise. We are no longer providing a downloadable version of this workspace. Please contact your ITD representative to request access.

Please send comments, questions and suggestions via e-mail to Beau Hansen. Beau.Hansen@itd.idaho.gov

All the files for each county are stored in a single zip file.
These files were produced using Bentley Microstation V07.01.04.10 for the year 2002.

County Map Download File Size (Zip)
ADA County Download 23 MB
Adams County Download 1.24 MB
Bannock County Download 1.23 MB
Bear Lake County Download 0.91 MB
Benewah County Download 0.90 MB
Bingham County Download 2.07 MB
Blaine County Download 2.59 MB
Boise County Download 1.43 MB
Bonner County Download 2.28 MB
Bonneville County Download 2.34 MB
Boundary County Download 1.22 MB
Butte County Download 1.83 MB
Camas County Download 0.83 MB
Canyon County Download 2.81 MB
Caribou County Download 1.34 MB
Cassia County Download 1.80 MB
Clark County Download 1.07 MB
Clearwater County Download 1.81 MB
Custer County Download 2.96 MB
Elmore County Download 2.61 MB
Franklin County Download 0.64 MB
Fremont County Download 1.57 MB
Gem County Download 0.60 MB
Gooding County Download 0.61 MB
Idaho County Download 5.37 MB
Jefferson County Download 1.20 MB
Jerome County Download 0.54 MB
Kootenai County Download 2.23 MB
Latah County Download 1.23 MB
Lemhi County Download 3.17 MB
Lewis County Download 0.52 MB
Lincoln County Download 1.64 MB
Madison County Download 0.54 MB
Minidoka County Download 0.78 MB
NezPerce County Download 0.80 MB
Oneida County Download 0.99 MB
Owyhee County Download 4.47 MB
Payette County Download 0.48 MB
Power County Download 1.24 MB
ResourceFiles County Download 1.17 MB
Shoshone County Download 2.83 MB
Teton County Download 0.49 MB
TwinFalls County Download 1.69 MB
Valley County Download 2.87 MB
Washington County Download 1.07 MB

Pavement Management

A Brief History of Idaho Pavement Management

In 1977, the Idaho Transportation Department began a review of existing pavement management programs with the goal of adopting one to fit Idaho’s needs. The following year, ITD acquired a Pavement Performance Management Information System (PPMIS) and made it operational on ITD’s mainframe computer. From 1978, the ITD steadily improved the PPMIS and modified it to meet specific conditions in Idaho. It was tested and refined by both ITD and consultant contract. By 1986, it was able to perform simplistic economic analysis and optimization.

In 2007, ITD began running our pavement data through the HERS-ST (Highway Economic Requirements System, STate model), at http://www.fhwa.dot.gov/infrastructure/asstmgmt/hersindex.cfm. This online software from FHWA uses pavement deterioration curves to predict pavement behavior. However, the HERS-ST model results had to be mathematically manipulated by hand in order to meet the conditions of Idaho weather, terrain and other factors, which was a painstaking process.

The new PMS System

In 2009, ITD purchased a pavement management and maintenance management software package. This new software housed a pavement management system (PMS) and a maintenance management system (MMS) to work in tandem as part of the Department’s long-term vision for asset management. This software contains a robust database that houses several kinds of data, such as bridges, maintenance activities, pavement condition, traffic data, skid data, R-values, boring logs and several others.
The Pavement Management System (PMS) has allowed ITD to refine the way we calculate and analyze data, by:

  • implementing new pavement performance curves calibrated by ITD engineers
  • implementing decision trees that mimic District engineering choices
  • creating performance models that accurately track and display pavement projects
  • employing an analysis engine that uses integer optimization to maximize benefit

These new abilities will help Idaho become an efficient practitioner of preservation-first pavement management.
With all users of the PMS having instant access to all available data, the system has given the District pavement designers and engineers an extensive toolbox at their disposal. The system suggests pavement project choices based on budget constraints and desired deficiency goals, which the engineers balance against needs and their expert knowledge of the system.

ITD’s Video Log-View all of our routes as if you’re the driver!

The Idaho Transportation Department owns a pavement profiler van which drives every state highway route every year. This video information is available to the public at no cost- you can go to the website and view our highways any time you like. Planning a trip? Looking for scenery? Or want to see that business name one more time? Visit the video page and view the route any time of day. Go to http://pathweb.pathwayservices.com/idaho and view the van”s video there.

The Idaho Transportation System Performance Report is a summary of the status of ITD-jurisdiction pavements. It is our intention to provide the reader with an accurate and useful review of the historical and current condition of Idaho’s roads.

Our long term vision is to include a summary of the status of all transportation in Idaho, with the cooperation of our partners in Idaho’s cities, counties and highway districts.

  • The 1998 Idaho Transportation System Performance Report Adobe PDF
  • The 1999 Idaho Transportation System Performance Report Adobe PDF
  • The 2000 Idaho Transportation System Performance Report Adobe PDF
  • The 2001 Idaho Transportation System Performance Report Adobe PDF
  • The 2003 Idaho Transportation System Performance Report Adobe PDF
  • The 2004 Idaho Transportation System Performance Report Adobe PDF
  • The 2006 Idaho Transportation System Performance Report Adobe PDF
  • The 2007 Idaho Transportation System Performance Report Adobe PDF
  • The 2008 Idaho Transportation System Performance Report Adobe PDF
  • The 2009 Idaho Transportation System Performance Report Adobe PDF
  • The 2010 Idaho Transportation System Performance Report Adobe PDF
  • The 2011 Idaho Transportation System Performance Report Adobe PDF
  • The 2012 Idaho Transportation System Performance Report Adobe PDF
  • The 2013 Idaho Transportation System Performance Report Adobe PDF
  • The 2014 Idaho Transportation System Performance Report Adobe PDF
  • The 2015 Idaho Transportation System Performance Report Adobe PDF
  • The 2016 Idaho Transportation System Performance Report Adobe PDF


We are responsible for reporting one of the Department’s most important Dashboard Measures, the Percent of Good/Fair Pavement. That can be viewed here:
http://itd.idaho.gov/Dashboard/

For comments, questions and suggestions please call the pavement management engineer at 208-334-8841.
Or write to
Idaho Transportation Department
Highways: Transportation Systems
P.O. Box 7129
Boise, Idaho 83707-1129