I-25 Mobility Hub Site Selection Study - Castle Rock

About the Study

Colorado’s transportation system is evolving as the state continues to grow. Integrating travel choices into the transportation system better enables the system to move goods and people throughout the network by providing multiple options to reach their destinations. A ‘mobility hub’ re-envisions the traditional park-and-ride into a transportation center that offers multiple transportation options at key locations, providing opportunities for transfers and real-time passenger information, and supporting transit-friendly development in nearby areas.

This project aims to find the best location for the Mobility Hub in the Town of Castle Rock and design and build the site. Our goal is to provide local residents commuter options through Bustang and explore other mobility choices like local shuttle services, bicycle and pedestrian improvements and Front Range Passenger Rail.

The Colorado Department of Transportation (CDOT) is planning to build northbound and southbound mobility hubs on I-25 in the Town of Castle Rock, located in Douglas County. After reviewing potential locations, three sites have been shortlisted:

  • Plum Creek/Brickyard
  • Wolfensberger
  • Walker-Pine Canyon

Schedule & Important Dates

  • Evaluation: Mid to late 2024
  • Conceptual Design: Winter 2024/2025
  • Site Selection Process: Early 2025 
  • Environmental impacts and evaluations: Mid-2025 
  • Design Phase: 2026 and beyond 
I-25 Mobility Hub Rollplot Map
Map of Castle Rock with the three Mobility Hub Sites being considered: (1) Brickyard/Plum Creek Parkway, (2) Wolfensberger, and (3) Walker/Pine Canyon"

 Goals
  • Increase transit ridership and provide multiple travel options
  • Increase safety, travel time, reliability, economic vitality, and air quality
  • Decrease the number of vehicle miles traveled by Colorado residents
  • Reduce air pollution statewide
  • Ease traffic congestion on major routes across the state
 Scope & Study Overview

This Site Selection Study aims to identify the best location for a potential Mobility Hub in the Castle Rock area. The study will review three sites selected from CDOT’s Division of Transit & Rail (DTR) 2022 Transit Study. Stakeholders will evaluate these sites, and the top location will move forward in the environmental and evaluation process before advancing to the design and build phase.

The candidate sites under review are:

  • Walker/Pine Canyon: Located on the west side of I-25 near mile marker 183
  • Wolfensberger: Located on the east side of I-25 near mile marker 182, at the northeast corner of Wolfensberger and Wilcox intersection
  • Brickyard/Plum Creek: Located on the west side of I-25, north of mile marker 181, at the end of Prairie Hawk Drive (location to be determined)

Project Funding: $2 Million for site selection and design.

 Project Delivery

Evaluation

The I-25 South Planning and Environmental Linkages (PEL) Study , completed in 2019, established the need for a regional transit station within the town of Castle Rock.

In 2022, CDOT DTR began reassessment of the need for a mobility hub, incorporating Bustang Mobility Hub screening criteria not previously utilized. The Castle Rock Mobility Hub Alternative Analysis Re-Evaluation Report supported the need for a mobility hub in the Town of Castle Rock.

Previous efforts of CDOT Region 1, CDOT DTR, Town of Castle Rock, and Douglas County, identified three potential sites (discussed above) with the highest feasibility, warranting further evaluation.

This Site Selection Study will build on previous studies that evaluated transit needs and opportunities in the Castle Rock area, focusing on the three sites identified above.

Community Engagement

The project is working with community members and stakeholders to ensure that community interests and concerns are understood and linked to project decision-making.

Engagement activities will occur through the duration of the project and will include:

  • Stakeholders
  • Close communication with the Town of Castle Rock and Douglas County
  • Virtual and in-person activities
  • Public meetings
  • E-notification updates (Sign up in the "Stay Informed" section)

Conceptual Design

The project will develop conceptual design alternatives for each site to facilitate qualitative and quantitative comparison of the sites. The conceptual design process will incorporate input from the engagement process to develop concepts that maximize the utility of each site while integrating Bustang standards.

Site Selection Process

The site selection process will be a collaborative process that integrates both the community engagement and conceptual design tasks discussed above. Key steps in the site selection process include:

  • Understand needs and desires of users and stakeholders
  • Develop a comprehensive screening criteria
  • Develop concepts for each of the three sites
  • Refine site concepts based on public and stakeholder feedback
  • Apply screening criteria to the three sites
  • Select the highest-performing site

National Environmental Policy Act (NEPA)

Upon site selection, the project will proceed with full NEPA evaluation and clearance. Each site has a different set of environmental resources that would be impacted by the development of a mobility hub. The extent of resource survey, mitigation, and type of NEPA clearance will depend on the site selected as well as the impacts of the proposed mobility hub.

Design Phase

Upon site selection, and concurrent with NEPA, the project will proceed with final design. Final design will advance the concept developed for the selected site, incorporate input provided by stakeholders through the ongoing engagement process, and implement standard Bustang elements and features to promote consistency for users, operators, and maintainers.