Skip to main content

Originally published July 9, 2013 at 8:26 PM | Page modified July 9, 2013 at 9:53 PM

  • Share:
  • Comments (26)
  • Print

Drivers, beware: 520 bridge, chunk of I-405 closed this weekend

The state Department of Transportation says drivers should expect lengthy traffic delays this weekend as work crews simultaneously shut down both the Highway 520 floating bridge and the northbound lanes of I-405 through Bellevue.

Seattle Times staff reporter

Traffic tips

With highway closures this weekend, the state Department of Transportation advises drivers to:

• Delay or eliminate discretionary trips.

• Travel before 10 a.m. or after 7 p.m. on Saturday and Sunday.

• Allow at least one hour of extra time to reach destinations.

• Know detour routes before driving.

• Carpool, use public transportation or bike.

• Use Twitter to stay informed about traffic conditions. The DOT will use the hashtag #Take5 to keep drivers informed during the closure.

• Check for updated traffic information or call 511 for Puget Sound traffic updates.

Most Popular Comments
Hide / Show comments
Yes, this is a big conspiracy to inconvenience everybody. Old timers here know that... MORE
This is going to be awful. if you close 520, everyone needs 405 to get around 520. ... MORE
So, continue to not go the Eastside? Got it. thanks. MORE


Don’t say you haven’t been warned.

The state Department of Transportation says drivers should expect lengthy traffic delays this weekend as workers simultaneously shut down both the Highway 520 floating bridge and the northbound lanes of Interstate 405 through Bellevue.

“If you head out the door without a game plan this weekend, you could end up in some gridlock,’’ said Travis Phelps, state DOT spokesman. “We really need drivers’ help to keep traffic moving and avoid nasty backups.’’

On Friday, northbound I-405 will close at 10 p.m., and both directions of Highway 520 will close at 11 p.m. All lanes of both highways will reopen by 5 a.m. Monday.

The DOT says Eastside and Seattle-area drivers should be prepared to spend an extra hour getting to their destinations, with the Interstate 90 bridge and Interstate 5 being used as alternate routes.

The closures will allow crews to replace 50-year-old concrete roadway sections on I-405, most of them between Main and Southeast Eighth streets, and conduct an annual inspection of the 520 bridge.

Crews also will install a fish culvert allowing Yarrow Creek to flow beneath a section of Highway 520 at 108th Street.

Without the full weekend closure, the work would have to be done over many weekends during nightly closures, said DOT spokeswoman Kris Olsen.

The DOT says work crews are taking advantage of summer weather and one of the few available weekends without major traffic events — such as the Seafair parade, the Bellevue Arts Fair or Bite of Seattle — to do the repairs and inspection.

However, the Mariners are playing at Safeco Field against the Los Angeles Angels Friday and Saturday night and Sunday afternoon, and the Seafair Milk Carton Derby is Saturday on Green Lake.

The DOT said it would do whatever it could to help keep traffic moving before and after the Mariners games.

The I-405 improvements are part of an $8.2 million concrete-pavement-rehabilitation project. This weekend, crews will replace broken concrete sections on the two left northbound lanes. Later this summer the DOT will replace sections in the two right northbound lanes.

Workers also will grind portions of the roadway. Once completed this fall, the surface will be smoother for driving.

There are no immediate plans to replace the concrete sections on the southbound lanes.

The 520 bridge will be closed once again later this summer for construction staging as part of the $306 million project to widen an 8.8-mile section of the highway east of the bridge, adding a transit lane.

Even though the highways may be a mess, “And we realize there are good reasons for this, the businesses are open as usual,” said Sara Garner, vice president of the Bellevue Chamber of Commerce.

The DOT recommends these alternate routes:

• To reach downtown Bellevue from I-405 headed north, take Southeast Eighth Street to 116th Avenue Northeast.

• Westbound Highway 520 drivers can use southbound I-405 or 148th Avenue Northeast to travel south.

• I-90 drivers wanting to head north on I-405 will be detoured onto Bellevue Way or 148th Avenue Southeast.

The DOT says drivers should plan for long delays on I-90 near the detour routes, on westbound Highway 520 approaching I-405, northbound I-405 where all traffic will exit to Southeast Eighth Street, and I-5 through downtown Seattle.

Surface streets in and around Bellevue will experience congestion as well.

Nancy Bartley: 206-464-8522 or

News where, when and how you want it

Email Icon

Time to add another piece to your Hawks collection

Time to add another piece to your Hawks collection

Check out the full lineup of championship merchandise from The Seattle Times store.


Partner Video


The Seattle Times

The door is closed, but it's not locked.

Take a minute to subscribe and continue to enjoy The Seattle Times for as little as 99 cents a week.

Subscription options ►

Already a subscriber?

We've got good news for you. Unlimited content access is included with most subscriptions.

Subscriber login ►