Idaho local data guide

Difference Between the COMPASS TIP and the Idaho Transportation Investment Program (ITIP)

The COMPASS Transportation Improvement Program (TIP) and the Idaho Transportation Investment Program (ITIP) are both critical transportation planning documents, but they serve different geographic scopes and administrative levels. The COMPASS TIP focuses exclusively on the regional needs of Southwest Idaho, while the ITIP serves as a comprehensive, statewide investment strategy that incorporates local planning.

Updated with grounded research as of 2026-10-01.

The short answer

The fundamental difference lies in their administrative scope: the COMPASS TIP is a regional document tailored to the unique growth and traffic needs of the Treasure Valley, managed by the Community Planning Association of Southwest Idaho (COMPASS). In contrast, the ITIP is a statewide document managed by the Idaho Transportation Department (ITD) that aggregates projects from across all of Idaho, including those derived from regional plans like the COMPASS TIP.

Key facts

COMPASS TIP Scope
The COMPASS TIP is specific to the Metropolitan Planning Organization (MPO) region of Southwest Idaho, focusing on federally funded transportation projects within that specific planning area.
ITIP Scope
The ITIP covers the entire state of Idaho and provides a seven-year investment outlook for highways, bridges, public transportation, and other infrastructure.

Understanding the Role of the MPO

In Idaho, Metropolitan Planning Organizations (MPOs) like COMPASS act as the bridge between local municipalities and state agencies. COMPASS is responsible for long-range transportation planning in the Boise metropolitan area. Because urban planning requires specific local knowledge, their TIP allows regional leaders to prioritize projects—such as intersection improvements or local public transit expansions—before they are integrated into the larger state plan.

How the ITIP Integrates State and Local Priorities

The Idaho Transportation Investment Program (ITIP) is designed to be inclusive of all federally funded transportation projects in Idaho. This creates a 'nesting' effect where local priorities, after being vetted and approved through the regional MPO process (like the COMPASS TIP), are pulled into the statewide ITIP. This ensures that the state's seven-year financial and construction planning aligns with the specific needs identified by regional planning agencies.

Planning for Real Estate and Development

For those involved in housing or real estate development, understanding the difference is essential for anticipating infrastructure timelines. The COMPASS TIP is the best resource for localized, near-term project information in the Treasure Valley. The ITIP, however, provides the broader context regarding major state-funded corridors and statewide bridges, which are vital for understanding regional connectivity and long-term land development potential.

Common questions

If a project is in the COMPASS TIP, is it automatically in the ITIP?

Yes. As a federally mandated process, projects within the COMPASS TIP are incorporated into the ITIP to ensure they receive federal funding and state oversight, maintaining a consistent list of transportation improvements across all levels of government.

How often are these programs updated?

Both the COMPASS TIP and the ITIP are updated regularly to reflect changing fiscal constraints, shifting growth patterns, and construction progress. Generally, the ITIP is updated annually to maintain a seven-year rolling investment guide.

Related Idaho questions

  • What is an MPO in Idaho?
  • How can I provide public comment on the ITIP?
  • How are transportation projects prioritized in Idaho?

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