Most sites will be constructed underground and away from streets or sidewalks to avoid temporary lane or trail impacts to the maximum extent possible. However, two areas will require temporary lane closures and parking reductions:
- Parking at Cathedral Park (St Johns Bridge East): During construction, the parking lot beneath the east end of the bridge will be reduced to approximately 15 parking spaces to construct the stormwater treatment tank underneath the pavement. A short one-way detour around the parking area will guide visitors to available spaces from the parking lot entrance on N. Willamette Boulevard.
- U.S. 30 in NW Portland: Intermittent lane and shoulder closures are anticipated on U.S. 30 between Sauvie Island and downtown Portland but freight access will be maintained throughout construction. Pedestrian detours will also be necessary in locations where work will occur on sidewalks, but each route will be signed and clearly marked. Some nightwork is anticipated between 6 p.m. – 7 a.m to grind the existing roadway and replace it with new concrete. Night closures will be announced ahead of time to build awareness within the local community.
Construction is anticipated in 2025 but is pending funding and the project schedule, which are both subject to change. We are working with local neighborhood and business associations to build awareness about these temporary impacts and hear feedback about potential concerns. Additional project information on the detours, closures, and additional details about their timing will be shared at our next online open house in the winter of 2025.