The closure will begin at 9 p.m. Friday, June 28 with all lanes open again by 5 a.m. Monday, July 1
PORTLAND — Four miles of Interstate 5 in Southwest Portland will close in all directions this weekend, Friday, June 28 to Monday, July 1 while crews rebuild the overpass across Southwest 26th Avenue.
The closure will begin at 9 p.m. Friday, June 28 with all lanes open again by 5 a.m. Monday, July 1.
The I-5 closure comes as the U.S. Olympic Track & Field trials wind up Sunday in Eugene. Travelers going to or from the Olympic trials should plan for extra travel time or find alternate routes if their trip takes them through Southwest Portland.
Work on the project began over a year ago using a construction method that builds the new bridge underneath the existing bridge, which has allowed Interstate 5 to remain open for all but this one weekend.
This approach saves an estimated $5.5 million in costs and six months of construction time. It reduces the impact on traffic, reduces nighttime noise, reduces the environmental impact and improves safety for workers and drivers.
For more information about why we chose this construction method, see this fact sheet.
The I-5 bridge over 26th Avenue was built in 1959 and widened in the 1980s. It carries more than 100,000 vehicles per day and its deck is heavily worn and near the end of its useful life. This project will create a smoother ride for travelers while bringing it up to today’s seismic standards.
As a detour around the closure, traffic can use major Portland area highways including Interstate 205, Interstate 84, OR 217 or U.S. 26.
Southwest Barbur Boulevard will be available for local traffic.
In addition, to better manage traffic and ensure users don’t enter the closure area, the following Southwest Portland on-ramps leading to I-5 will close during the same times.
Northbound on-ramp closures:
- Southwest Kruse Way.
- Southwest Haines Street.
- Southwest Capitol Highway.
- Southwest Spring Garden Street.
- OR 99W/Barbur Boulevard.
Southbound on-ramp closures:
- Interstate 405 on-ramp.
- South Harbor Drive on-ramp.
The project may include occasional nighttime single and double lane closures in both directions in the months ahead. Those closures have not been scheduled.
Work began on the I-5 bridge over a year ago. This project will improve the I-5 bridge in both directions over Southwest 26th Avenue with a rebuilt structure and will upgrade Southwest 26th Avenue under the interstate with better lighting, bike lanes and sidewalks.
For more information go to our I-5 Over 26th Avenue Improvements project web site.
The estimated project cost is $13 million.
Information provided by the Oregon Department of Transportation.
Also read:
- Opinion: IBR still holding and lying about coming billions in cost overruns
Joe Cortright argues that Interstate Bridge Replacement officials are deliberately delaying the release of an updated cost estimate that he says could push the project toward $10 billion. - Letter: A call for competent Interstate Bridge project management
Rick Vermeers argues that unchecked scope, rising costs, and missed timelines threaten the survival of the Interstate Bridge Replacement project unless light rail is removed. - Rep. John Ley introduces bill to balance representation on Washington transportation boards
Legislation introduced by Rep. John Ley seeks to change how transportation board seats are allocated and prevent funding penalties tied to population-based representation rules. - Opinion: IBR administrator receives generous Christmas gift on his way out the door
Ken Vance argues that IBR leadership avoided accountability on rising project costs as Administrator Greg Johnson announced his departure without providing updated estimates. - Update: Belkot’s legal team submits sheriff’s report to its case against Clark County Council
Michelle Belkot’s legal challenge against the Clark County Council advanced after a sheriff’s report alleging rule violations was accepted into evidence.
