Portland drivers face several nighttime traffic disruptions in July as crews close sections of I-5 and northbound I-205 for bridge, sign, paving, and safety work. The scheduled closures affect central Portland, Oregon City, and West Linn, with signed detours and additional lane restrictions planned around both major corridors.

Key Takeaways

• Both directions of I-5 are scheduled to close from 10 p.m. Saturday, July 11, until as late as noon Sunday, July 12.
• Northbound I-205 across the Abernethy Bridge is scheduled to close overnight July 17 and July 18.
• Additional overnight lane and ramp closures are planned along both freeways during July.
• I-405 will serve as the signed local detour during the I-5 shutdown, while regional traffic will be directed toward I-205.
• Construction schedules may change, making updated road information important before overnight trips.

Portland drivers traveling through the central city will encounter the most substantial I-5 disruption from 10 p.m. Saturday, July 11, until as late as noon Sunday, July 12. The Oregon Department of Transportation said all northbound and southbound lanes will close while crews install a new sign structure.

The closure is part of the I-5 Rose Quarter Improvement Project, where construction began in summer 2025. The current phase includes stormwater facilities, bridge deck repairs, seismic work, a southbound merging-lane extension, and new highway signs. ODOT expects the initial phase to continue through late 2026.

Where the I-5 Shutdown Begins

Northbound I-5 will close beginning at Exit 300 near the I-84 interchange. The Broadway entrance to northbound I-5 will remain open, and northbound lanes beyond that point will continue operating.

Southbound I-5 will close beginning at Exit 302B near the I-405 Fremont Bridge. Drivers traveling west on I-84 will be directed onto southbound I-5, while the southbound freeway beyond the affected area will remain open.

Regional traffic will be directed toward I-205. Local traffic will use a signed I-405 detour to move north or south around the closure, according to ODOT’s weekly construction update.

The interruption comes as other major regional transportation projects continue attracting attention, including the proposed Interstate 5 bridge replacement connecting Portland and Vancouver.

Additional I-5 Lane Closures

The full shutdown is not the only I-5 impact scheduled during the month. ODOT also plans periodic weeknight closures of the southbound right lane between the Moda Center and the Morrison Bridge.

Those closures are scheduled from 10 p.m. to 5 a.m. for striping and bridge-railing replacement. One southbound lane will remain available during that work, with another closure currently scheduled for July 15.

The work zone sits where I-5, I-84, and I-405 converge, making the corridor an important connection for commuters, freight carriers, event traffic, and travelers moving through the city. Drivers heading toward the Rose Quarter, Lloyd District, or downtown may need additional time even when only one lane is closed.

How Will the I-205 Closures Affect Oregon City and West Linn?

Portland drivers using I-205 south of the city will face separate overnight restrictions at the Abernethy Bridge, which connects Oregon City and West Linn across the Willamette River.

ODOT plans to close northbound I-205 across the bridge on Friday, July 17, and Saturday, July 18. Each closure is scheduled to begin at 11 p.m. and end at 7 a.m. the following morning. The northbound entrance from Oregon Route 43 will also close during those periods.

Abernethy Bridge Construction

The closures are connected to the first phase of the I-205 Improvements Project. Crews are upgrading the Abernethy Bridge, realigning interchanges at OR 43 and OR 99E, making changes for pedestrians and cyclists, and constructing a sound wall in Oregon City.

ODOT describes the Abernethy Bridge as a critical I-205 connection between West Linn and Oregon City. The state’s 2026 summer construction materials said the project was approximately 70 percent complete as of spring 2026.

The project has required several northbound closures since June. ODOT initially announced that the first summer shutdown would run from 11 p.m. June 13 until 7 a.m. June 14, with additional closure periods expected as work progressed.

Northbound I-205 is also scheduled for lane closures Monday through Thursday from 10 p.m. to 5 a.m. The OR 43 entrance to northbound I-205 will close during the same hours, while southbound OR 43 lane closures are planned Monday and Tuesday from 8 p.m. to 6 a.m.

Travelers who usually combine driving with buses or light rail may also want to review recent TriMet service changes before selecting an alternative route.

What Should Portland Drivers Check Before Leaving?

Portland drivers traveling late at night should review current conditions shortly before departure. Construction schedules can shift because of weather, equipment availability, or progress at the work site.

ODOT identifies TripCheck as its continuously updated source for construction, crashes, road conditions, and traffic impacts across Oregon. The agency also publishes a weekly Portland-area construction report, which lists projects in Multnomah, Clackamas, Washington, and Hood River counties.

Drivers should follow posted detours rather than relying solely on a navigation application. Digital maps may take time to reflect a newly activated closure or may direct vehicles toward local streets that are not designed to absorb heavy freeway traffic.

People traveling to Portland International Airport, working overnight shifts, transporting goods, or attending late events may need to leave earlier. Detour routes could carry more vehicles than usual, particularly when closures on I-5 and I-205 occur within the same general period.

Lower speeds and greater following distances are also important around nighttime work zones. Lane markings, temporary barriers, construction vehicles, and workers may be harder to see after dark. ODOT advises travelers to obey work-zone signs, allow more time, and expect delays around active projects.

What Are Drivers Asking About the Closures?

Is all of I-5 closing in Portland?

No. The July 11 closure covers specific sections of northbound and southbound I-5 near the Rose Quarter and the I-84 and I-405 interchanges. Lanes outside the closure boundaries will remain open.

How long will the July 11 I-5 closure last?

The shutdown is scheduled to begin at 10 p.m. Saturday, July 11, and continue until as late as noon Sunday, July 12. ODOT may reopen the freeway earlier if the sign installation is completed ahead of schedule.

When will northbound I-205 close?

Northbound I-205 across the Abernethy Bridge is scheduled to close from 11 p.m. to 7 a.m. on the nights of July 17 and July 18. The northbound entrance from OR 43 will close at the same time.

Will southbound I-205 remain open?

The announced full Abernethy Bridge closures apply to northbound I-205. Other lane restrictions may still affect nearby roads and ramps, so drivers should check current conditions before traveling.