Construction
Construction Phases
Construction of the I-5 Rose Quarter Improvement Project will begin in summer 2025 with Phase 1A construction, followed in 2027 by Phase 1 construction. Click on the tabs below to learn more about each phase.
Phase 1A Construction (Summer 2025)
- Stormwater improvements near the intersection of I-5 and I-405
- Bridge work near the intersection of I-5 and I-84
- Signage for highway cover safety and construction
Phase 1 Construction (2027)
- Build southern portion of the highway cover (30% of cover length) and multimodal improvements
- Complete southbound auxiliary lane and shoulder from I-405 to the Morrison Bridge exit
- Extend the northbound auxiliary lane and shoulder under the highway cover
- Install signage for highway cover safety and construction
- Widen Holladay/Hassalo bridge
Future Project Phases
Construction of Phase 1A and Phase 1 components will support future construction phases to complete the project in full. ODOT and our partners – City of Portland, Metro, Albina Vision Trust and the Portland Trail Blazers – are committed to completing the project in its entirety. Future project phases are currently unfunded.
Numbers on the map correspond to descriptions on the right.
Phase 1A (2025)
Phase 1A Construction (Summer 2025-Fall 2026)
Construction Cost: $65 million
Components:
- Stormwater improvements near the intersection of I-5 and I-405
- Bridge preservation and seismic resiliency work near the intersection of I-5 and I-84
- Signage for highway cover safety and construction
Traffic Impacts: Expect occasional nighttime lane closures and possible shoulder closures.
Benefits:
- Builds the southern portion of the southbound auxiliary lane between I-84 and the Morrison Bridge exit
- Gets the construction community working in 2025
- Builds capacity for Disadvantaged Business Enterprises and small businesses
- Preserves existing infrastructure and improves water quality
Phase 1 (2027)
Phase 1 Construction (2027-2031)
Components:
- Build southern portion of the highway cover (30% of cover length) and multimodal improvements
- Complete southbound auxiliary lane and shoulder from I-405 to the Morrison Bridge exit
- Extend the northbound auxiliary lane and shoulder under the highway cover
- Install signage for highway cover safety and construction
- Widen Holladay/Hassalo bridge
Benefits:
- Provides needed freeway safety improvements
- Creates community development opportunities on and off the highway cover following Phase I
- Complements the City of Portland’s Reconnecting Communities and Neighborhoods grant project focused on Broadway and Weidler
- Uses an efficient approach to construction that minimizes cost and keeps the traveling public moving during construction
- Facilitates the relocation of the southbound I-5 off-ramp in a future construction phase
How We Are Building It
Construction Manager/General Contractor
A Construction Manager/General Contractor (CM/GC) is a project delivery method where project contracts are released in two phases: first design and later construction. The project owner hires a contractor to provide feedback during the design phase, before construction begins.
A Mini CM/GC method follows the same phasing but is geared to smaller companies. Mini CM/GCs join the project during the design phase and complete work on smaller work contracts within the larger project.
Hamilton/Sundt, a Joint Venture (HSJV), in association with Raimore Construction (one of the largest Black-owned contractors in Oregon), is the project’s Construction Manager/General Contractor (CM/GC).
In 2022, ODOT selected three Mini CM/GCs (all Disadvantaged Business Enterprises) to complete early work. The Project team, including the project’s CM/GC, also published the Diversity and Subcontracting Plan. To learn more about the project’s commitment to workforce development, visit our Workforce Opportunities page.