Who We Serve
LHTAC serves the cities, counties and highway districts across the state of Idaho. The map of who we serve is available to download below.
Small (2.8MB, 4500 x 6300, PNG)
Medium (11.7MB, 22″ x 32″, 600 dpi, PDF)
Large (16.6MB, 30″ x 42″, 600 dpi, PDF)
Extra Large (29.4MB, 42″ x 60″, 600 dpi, PDF)
Interactive Project Map
Use LHTAC’s interactive project map to view, search for, and filter all LHTAC projects in Idaho. The map includes closed and currently active projects throughout Idaho. Select and highlight projects to view their details in the data table. Click the column headers to sort the information. Project data is current with LHTAC’s Map and Records System. Improvements and new features will be added as requests and needs arise.
https://gis.lhtac.org/projects/
Interactive Bridge Map
Use LHTAC’s interactive bridge map to view, search for, and filter all local and state bridges in Idaho. Data is from the National Bridge Inventory and ITD.
Interactive Bridge Map – Leading Idaho Local Bridge (LILB) Program
The Governor and State Legislature have proposed one-time funding for local system bridges. This map includes only those likely to be eligible, namely those with a condition rating of “poor” or posted for load restrictions.
https://gis.lhtac.org/eligible_bridges
Interactive Small Structure Map
Use LHTAC’s interactive small structure map to view, search for, and filter all local and state small structures in Idaho. Data is from the ITD and local road jurisdictions. Small structures are bridges, culverts, tunnels, etc. that are 10-20 ft in length along the road centerline. (Bridges are over 20 ft. and should be included in the bridge inventory. A structure over 20 ft may be included here if it is not in the bridge inventory for some reason.
https://gis.lhtac.org/small_structure
Crash Data Map
Use this interactive crash map to complete your Local Highway Safety Improvement Program application.
ITD General Web Map
Includes Functional Classification, Urban Areas, Federal-aid Routes, political boundaries, and more.
https://iplan.maps.arcgis.com/home/webmap/viewer.html?webmap=3321e504a78549e79ac76e3984c90295
Archived Local Highway Inventory Maps
Access the LHI reporting maps from previous years for Road and Bridge departments as well as Highway Districts. All maps are organized by county and the reporting year is in the title.
https://gis.lhtac.org/files/lhi/
Idaho Legislative Districts (2013-2022) and Local Highway Jurisdictions
See the list (starting on page 2 of the above document) to find the legislative district(s) that correspond to any particular local highway jurisdiction. Compilation is based on visual analysis of layered data. Legislative boundaries were redrawn in 2012 and are valid from 2013 to 2022, though the senators and representatives for each district will change. Each district’s senators and representatives were taken from the Idaho State Legislature website at www.legislature.idaho.gov or the Idaho Secretary of State website www.sos.idaho.gov.
Legislative and LHJ Map (PDF, 1.0 MB – Updated Apr. 28, 2017)
Local Road, Local Bridge, State Bridge Mapset 2014
LHTAC has published statewide local road, local bridge, and state bridge data in a new mapset. Use the link to download the PDF booklet.
Local Road, Local Bridge, State Bridge (29MB, PDF – updated Jan. 22, 2015)
Or download a single page: