Regional Transportation Plan – Clark County
Programs
Mission Statement
To encourage and promote the development of a balanced, safe, efficient and affordable regional transportation system to meet the mobility needs of people and goods, within and through this region, and minimize transportation-related air pollution.
Clark County Regional Transportation Plan
The Regional Transportation Plan for Clark County is this region’s long-range transportation plan. The RTP is based on the Comprehensive Growth Management Plan for Clark County and is the collective regional strategy for developing a transportation system to provide mobility and accessibility for person trips as well as freight and goods movement.
The RTP is the foundational document for transportation infrastructure, policy, and planning in Clark County. It identifies future regional transportation system needs and outlines transportation plans and improvements necessary to preserve mobility within and throughout the region.
Looking 20-plus years into the future, the RTP’s analyses, recommendations, and fiscally constrained funding plan guide local, state, and federal funding needs. Using growth forecasts and employment trends, the RTP considers how to build and maintain a multimodal transportation system that will serve the needs of people who live, work, and travel in Clark County. It provides an opportunity to identify transportation strategies today to address the mobility needs that come with planned future growth, while addressing the growing need to make transportation services more equitable and accessible for all.
2024 Regional Transportation Plan
2027 RTP Amendment
The process outlined in the RTP Amendment Process Guidebook proposes that in the five-year window between major RTP updates, there may be one amendment to the RTP. This amendment process will begin approximately two years after the adoption of the RTP update. Clark County and municipalities within Clark County are in the process of updating their comprehensive plans. These plans are scheduled to be adopted June 2026, hence triggering the need to amend the RTP.
The proposed timeline to update the RTP is as follows:

RTP Amendment Timeline...
RTP Amendment Timeline diagram showing seven sequential phases. Phase 1: January & February 2026 – Overview + Policy Framework; RTAC in January, RTC Board in February. Phase 2: March & April 2026 – Project Submittal: Completed, 6-year, and 20-year lists; March due date for WSDOT, C-TRAN, Ports, and Cowlitz; April due date for Clark County and Cities. Phase 3: August & September 2026 – Financial Plan; RTAC in August, RTC Board in September. Phase 4: October & November 2026 – Performance Measures; RTC Board in October, November. Phase 5: December 2026 & January 2027 – Draft RTP Review; RTAC in December, RTC Board in January. Phase 6: February 2027 – RTP Adoption; RTC Board.
Downloads
- RTP Amendments Process Guidebook Resolution (PDF, 1MB)
- 2024 Designated Regional Transportation System Map (PDF, 1MB)
- 2023 RTC SEPA Packet (PDF, 933KB)
- 2025 Complete Demographic Report Final (PDF, 7.1MB)
Policy Framework
Diagram titled ‘Meeting Future Needs – Policy Framework’ showing a vision statement above four goals—safety and security, accessibility and mobility, economic vitality and quality of life, and sustainability and resiliency—leading to 6-year and 20-year regional project lists and action strategies.
Policy Briefs
Staff Contact
Judith Perez Keniston, AICP
P. 564.367.5231
E.



