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BOI 10R-EA

Proposed Runway Incursion Mitigation (RIM) Program and Related Improvements Project at Boise Airport

The City of Boise Department of Aviation wants your input on the Draft Environmental Assessment (EA) for the Runway Incursion Mitigation (RIM) Program and Related Improvements Environmental Assessment (EA) at the Boise Airport.

A public workshop will take place on April 28, 2026 to provide an opportunity for agencies and interested members of the public to receive information on the Proposed Action and the environmental analyses contained in the Draft EA. An electronic version of the Draft EA is available on this page.

Comments on the Draft EA will help FAA in making an informed decision about the Proposed Action. Attendance at the workshop is not mandatory to make comment. All public comments must be received by 5:00 p.m. MDT on Friday, May 1, 2026. See below for direction on how to provide public comment. 

Public comments* can be made through the following methods:

  • Written comment via email delivered to: mggreen@cityofboise.org
  • Written comment via US mail delivered to: Markus Green at the address below
  • Written comment dropped off at the Boise Airport at the address below

Boise Airport Administration 
Attn: Markus Green
3201 Airport Way, Suite 1000
Boise, Idaho 83705

*All public comments must be received by 5:00 p.m. MDT on Friday, May 1, 2026.

What runway changes are being considered in the project?

  • Extending Runway 28L by 1,578 feet for a total new runway length for Runway 10R/28L of 10,000 feet. This would be achieved between a combination of relocating 1,341 feet from Runway 10R to 28L and adding an additional 237 feet.
  • Relocating and/or replacing navigational aids (NAVAIDs), physical devices on the ground for aircraft pilots to detect and fly to. NAVAIDs include Distance Measuring Equipment (DME), Localizer (LOC), Approach Lighting System with Sequenced Flashing Lights (ALSF-2), Visual Approach Slope Indicator (VASI), Precision Approach Path Indicators (PAPIs), Glideslope, Runway Visual Range (RVR), Medium Intensity Approach Lighting System with Runway Alignment Indicator Lights (MALSR).
  • Removing portions of Taxiways J and F.
  • Constructing Taxiways B and P.​

What is a Runway Incursion Mitigation (RIM)?

Runway incursions occur when the airfield geometry is such that there is risk of aircraft or vehicles in a protected area reserved for aircraft landing or taking off. Risk factors that contribute to runway incursions may include unclear taxiway markings, airport signage, and more complex issues such as the runway or taxiway layout.  RIM improvements look to reconfigure runways and taxiways with simpler geometry and remove hot spots, locations on an airport movement area with a history or potential risk of collision or runway incursion.

Why is the Boise Airport proposing RIM improvements?

During the 2019 Boise Airport Master Plan Update, a hot spot and nonstandard taxiway geometry were identified as contributing to the increased risk of runway incursions. The Federal Aviation Administration (FAA) included the Boise Airport in its official RIM program in 2018 to begin the process for mitigating those risks. Additionally, a Runway Safety Action Team for the Airport identified the Airport’s staggered runway thresholds as a potential contributor for wrong surface landings.

Environmental Assessment Next Steps:

  • The Draft EA is available for review now. It describes the existing environmental conditions (affected environment), analyzes the potential environmental effects of the proposed action (environmental consequences), and addresses any public comments received during the scoping portion of this project
  • A Public Workshop will be held on April 28, 2026 to provide information on the Proposed Action and the environmental analyses contained in the Draft EA.
  • Anticipate the Final EA will be published later this year.
  • After the Final EA is published, the FAA will issue its findings.