The long-debated effort to replace the aging Interstate 5 bridge across the Columbia River is moving closer to reality, with planners projecting that final environmental reviews and federal approvals could arrive by early 2026. If those milestones are met, construction on the $6 billion megaproject could begin shortly thereafter.
On Monday, officials from the Interstate Bridge Replacement (IBR) Program briefed a joint committee of Oregon and Washington lawmakers on the project’s status. The bridge, which links Portland, Oregon, with Vancouver, Washington, is considered a critical transportation corridor for commuters, freight, and regional commerce.
However, several unresolved issues still loom over the project’s future. The biggest questions revolve around the final design—whether the structure will be a single-span replacement or include a lift span to accommodate river traffic—and how much tolling drivers will face to help cover costs. Lawmakers also raised concerns about the project’s total price tag and the remaining $1 billion in federal funds that have yet to be secured.
“This bridge is more than just concrete and steel—it’s about ensuring safe and reliable travel between two states that depend on each other economically,” planners told lawmakers during the hearing.
The I-5 bridge, which first opened in 1917 with a second span added in 1958, has long been flagged as seismically vulnerable and inadequate for modern traffic demands. The structure lacks shoulders, experiences frequent congestion, and would likely collapse in a major earthquake. Replacing it has been a priority for regional leaders for decades, though past attempts stalled due to political disagreements.
Under the current timeline, early construction work could begin in 2026, with full completion targeted in the early 2030s. Once underway, the project would be among the largest infrastructure undertakings in the Pacific Northwest.
Supporters argue that the new bridge will improve freight movement, reduce bottlenecks, and provide safer, multimodal transportation options—including space for light rail, pedestrian, and bicycle access. Critics, however, remain cautious about tolling impacts on low-income drivers and worry that costs could escalate further if federal funds are delayed.
As one official emphasized, “We have an opportunity to finally replace a structure that is well past its design life. The stakes are high, but the cost of inaction would be even greater for the people of Oregon and Washington.”
With environmental and funding decisions expected in early 2026, the project is now at a critical juncture. Lawmakers will need to weigh the balance between affordability, design, and long-term resilience as the bridge inches closer to construction.
Originally reported by Matthew Kish in Oregon Live.
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