District 6 – East Idaho
Overview
Click banner below for I-15/US-20 Connector Study in Idaho Falls.
District 6 covers 18,588 square miles of the state and maintains 2,302 lane miles (lanes of road, on- and off-ramps, etc.) and 358 bridges.
District 6 is the third largest by population, with 207,000 residents or 13 percent of the state. Terrain includes plains, valleys and mountains, with highlands boasting eight of the 12 highest mountain passes in Idaho.
District headquarters is in Rigby located in Jefferson County, where Jason Minzghor is district (head) engineer. Robert “Bob” Hoff, of Idaho Falls, represents District 6 on the Idaho Transportation Board.
District 6 Fax: 208-745-8735
206 North Yellowstone, Rigby, ID
Mail: P.O. Box 97, Rigby, ID 83442-0097

Bob Hoff
Board Member
208-524-1202
Construction List
2019 Highway Construction in East Idaho
- Go to 511.idaho.gov for the latest construction and traffic details.
- More construction projects and details coming soon.
US Routes Construction
- US-20: Lorenzo Bridge Repair
- US-20: Curr Canal Bridge Replacement
- US-20: Ashton Hill to Dumpground Road Reconstruction
- US-93: Gibbonsville to Montana State Line Overlay
State Highways | Idaho Routes
Planning & Design
Projects in Planning or Design Phases
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For more ITD Project Details & Map Location go to: itdprojects.org
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US-20: Chester to Ashton Environmental Assessment (EA)
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US-20: Targhee Pass Environmental Assessment (EA)

The Idaho Transportation Department (ITD) is collaborating with the City of Idaho Falls, Bonneville County and other stakeholders on the I-15/US-20 project development.
- US-20 Corridor Plan Ashton to Montana – Iplan Story Map
- US-20 Corridor Plan Refresh
- US-26 Corridor Geotechnical Investigation Swan Valley – Iplan Story Map
Accessibility | Title VI | Americans with Disabilities Act (ADA) Compliance
The Idaho Transportation Department (ITD) is committed to compliance with Title VI of the Civil Rights Act of 1964 and all related regulations and directives. ITD assures that no person shall on the grounds of race, color, national origin, gender, age, or disability be excluded from participation in, be denied the benefits of, or be otherwise subjected to discrimination under any ITD service, program, or activity. The department also assures that every effort will be made to prevent discrimination through the impacts of its programs, policies, and activities on minority and low-income populations. In addition, the department will take reasonable steps to provide meaningful access to services for persons with Limited English Proficiency.
TTY/TDD Users: Dial 711 or (800) 377-3529 to use Idaho Relay System
Targhee Pass EA
Document: Targhee Pass Environmental Assessment (EA)
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To learn more go to: IslandParkUS20.com
EA Update
ITD is currently compiling and reviewing all of the comments received since the release of the EA. Next steps in the EA process include the following:
- Respond to public and agency comments and revise the EA as necessary.
- Based on the final EA analyses, determine if the proposed project would result in significant environmental or cultural impacts and thus require the preparation of an Environmental Impact Statement, or if it does not, then a Finding of No Significant Impact (FONSI). A FONSI summarizes the results of the EA and the reasons for the impact determinations. It also includes the responses to comments and discussion of any proposed mitigations.
- Issue a public notice on the availability of the FONSI. The signing of the FONSI by FHWA concludes the EA process.
After the EA has been concluded, a mitigation plan will be developed based on the environmental commitments from the FONSI. This mitigation plan would be a part of the plans, specifications and engineering for the construction contractor. Estimated start date for reconstruction of Targhee Pass is 2022.
- Stay updated on the EA by sending an email to: targheepass@langdongroupinc.com
EA Overview
The Idaho Transportation Department (ITD) and the Federal Highway Administration (FHWA) initiated the EA to engage the public, evaluate impacts, risks, benefits, opportunities, and costs associated with reconstruction of Targhee Pass (U.S. 20 between its junction with Idaho 87 and the Montana state line).
Accessibility | Title VI | Americans with Disabilities Act (ADA) Compliance
The Idaho Transportation Department (ITD) is committed to compliance with Title VI of the Civil Rights Act of 1964 and all related regulations and directives. ITD assures that no person shall on the grounds of race, color, national origin, gender, age, or disability be excluded from participation in, be denied the benefits of, or be otherwise subjected to discrimination under any ITD service, program, or activity. The department also assures that every effort will be made to prevent discrimination through the impacts of its programs, policies, and activities on minority and low-income populations. In addition, the department will take reasonable steps to provide meaningful access to services for persons with Limited English Proficiency.
TTY/TDD Users: Dial 711 or (800) 377-3529 to use Idaho Relay System
News
Child Pedestrian Safety projects start in spring
Transportation Board Approves Northgate Engineering Funding
District 6 celebrates US-20 improvements with $10,000 for Cystic Fibrosis
ITD donates $10,000 for Cystic Fibrosis
DOUBLE DOWN ON THORNTON: Eastern Idaho project wins President’s and People’s Choice awards, plus $10,000 for Cystic Fibrosis
Eagle’s Salmon rescue, response to POE car fire show ITD concern for public safety
Public can vote for Idaho’s Thornton Interchange project for national honor and $10k charity prize
Drilling to slow traffic on state highways in eastern Idaho starting Monday (Aug. 7)
Nearly 100 attend Targhee Pass workshop July 27 in Island Park
Completed Projects
East Idaho: Construction Projects Completed in 2018
ID-28: Lemhi River Bridge Replacements
ITD identified nine bridges for reconstruction on ID-28 between April 2018 and October 2019. Projects remove and replace bridges, enhance existing structure and provide increased capacity for the river. The remaining four bridges, located between Leadore and Salmon, will be rebuilt starting in April 2019, until October 2019.
2018 Bridge Construction Locations
- ID-28 at milepost 101.77 (11.3 miles northwest of Leadore)
- ID-28 at milepost 103.12 (located .16 miles southeast of Lee Creek Road/Maier’s Lane)
- ID-28 at milepost 105.51 (2.64 miles southeast of the Old Highway 28 Junction).
- Two additional bridges southeast of Salmon, at milepost 115.67 and 125.66.
US-93: Warm Springs Creek Bridge Replacement
- Project removed and replaced bridge and enhanced existing structure, including box culvert replacement and roadway resurfacing
Services | Contacts
For application forms go to ITD Form Finder and then search for “Encroachment“
- Approach Permit application – i.e. driveway, road access, etc. (Right of Way Encroachment Application and Permit Approaches or Public Streets) – Search for form # “2109” or “Encroachment” at ITD Form Finder
- For the Utility Permit application – (Right of Way Encroachment Application and Permit for Utilities) – Search for form # “2110” or “Encroachment” at ITD Form Finder
- Other Encroachments application – i.e. signs, banners, etc. (Right of Way Encroachment Application and Permit for Other Encroachments) – Search for form # “2111” or “Encroachment” at ITD Form Finder
- Milepoint Logs go to the iPlan – Mapping Resource for Idaho highway route information
- iPlan – Mapping Resource
- Access Management Informational Brochure
Encroachment Application Office Locations & Contacts
Regional Location | Office Hours | Counties & Contact Information | |
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North Idaho - District 1 600 West Prairie Avenue Coeur d’Alene, ID 83815 | 7:00 a.m. to 4:00 p.m. Pacific Time | Email: Stacy.Simkins@itd.idaho.gov | Counties: Benewah, Bonner, Boundary, Kootenai, Shoshone - Stacy Simkins, 208-772-1297 |
North-Central Idaho - District 2 2600 Frontage Rd Lewiston, ID 83501 | 7:00 a.m. to 4:00 p.m. Pacific Time | Email: Shane.Niemela@itd.idaho.gov | Counties: Clearwater, Idaho, Latah, Lewis, Nez Perce - Shane Niemela, 208-799-4239 |
Southwest Idaho - District 3 8150 Chinden Boulevard Boise, ID 83714 | 8:00 a.m. to 5:00 p.m. Mountain Time Payments are not accepted after 3:00 p.m. Payment Phone Line: 208-332-7187 | Email: ITDD3Permits@itd.idaho.gov | Counties: Ada, Elmore, Gem, Boise, Valley - Shona Tonkin, 208-334-8341 Counties: Canyon, Adams, Owyhee, Payette, Washington - Tyson McCoy, 208-338-8335 |
South-Central Idaho - District 4 216 South Date Street Shoshone, ID 83352 | 8:00 a.m to 5:00 pm Mountain Time | Email: Deb.Pierson@itd.idaho.gov | Counties: Blaine, Camas, Cassia, Gooding, Jerome, Lincoln, Minidoka, Twin Falls - Deb Pierson, 208-886-7839 |
Southeast Idaho - District 5 5151 S. 5th Ave Pocatello, ID 83204-2202 | 8:00 a.m to 5:00 pm Mountain Time | Email: D5EncroachmentPermits@itd.idaho.gov | Counties: Bannock, Bear Lake, Bingham, Caribou, Franklin, Oneida, Power - Phone: 208-239-3300 |
East Idaho - District 6 206 North Yellowstone Rigby, ID 83442 | 8:00 a.m to 5:00 pm Mountain Time | Email: Troy.Despain@itd.idaho.gov | Counties: Bonneville, Butte, Clark, Custer, Fremont, Jefferson, Lemhi, Teton, Madison - Troy Despain, 208-745-5644 |
Idaho Transportation Department Headquarters - Boise, ID | Utility Permits Email: Barbara.Waite@itd.idaho.gov Sign Permits Email: Justin.Pond@itd.idaho.gov | Barbara Waite, 208-334-8522 Justin Pond, 208-334-8832 |
Roadway Sign Request Contacts
- Ports of Entry
- DMV Motor Carrier Services
- Trip Permits
- Idaho Map for Designated Routes Allowing up to 129,000 lbs
- East Idaho 129,000 lbs. Designated Routes Map – District 6
- Idaho Routes Designated for Extra Length Combinations up to 105,500 lbs.
- All maps for Designated Idaho Routes Up to 129,000 lbs.
Idaho Transportation Department, District 6 Office
Mail Address: P.O. Box 97, Rigby, ID 83442-0097
Location: 206 North Yellowstone, Rigby, ID 83442
District 6 Phone: 208-745-7781
District 6 Fax: 208-745-8735
District 6 Operational Contacts
Media Contact: Megan Stark | 208-745-5611
Accessibility | Title VI | Americans with Disabilities Act (ADA) Compliance
The Idaho Transportation Department (ITD) is committed to compliance with Title VI of the Civil Rights Act of 1964 and all related regulations and directives. ITD assures that no person shall on the grounds of race, color, national origin, gender, age, or disability be excluded from participation in, be denied the benefits of, or be otherwise subjected to discrimination under any ITD service, program, or activity. The department also assures that every effort will be made to prevent discrimination through the impacts of its programs, policies, and activities on minority and low-income populations. In addition, the department will take reasonable steps to provide meaningful access to services for persons with Limited English Proficiency.
TTY/TDD Users: Dial 711 or (800) 377-3529 to use Idaho Relay System