The first night of work goes from 8 p.m. Thursday to 7 a.m. Friday, tweeted the Washington State Department of Transportation (WSDOT). Another three or four overnight lane closures are expected next week.
One lane of Interstate 5 will close southbound near DuPont on Thursday night, along with the southbound entrance at Mounts Road, for repairs to the train bridge that was damaged in the fatal Amtrak Cascades 501 derailment this week.
The first night of work goes from 8 p.m. Thursday to 7 a.m. Friday, tweeted the Washington State Department of Transportation (WSDOT). Another three or four overnight lane closures are expected next week.

Amtrak train derailment
- Officials pushed 'aggressive' timeline before safety tech was ready | Times Watchdog
- NTSB report: Amtrak engineer missed speed limit sign before the train crashed on a curve south of Tacoma
- 'Holy Cow, so the train is actually on the road?' The wreck of Amtrak 501
- It took authorities hours to search the wreckage. Here's why
- Train was 50 mph over limit when it derailed at curve before I-5 crossing
- Photos: Investigation at crash scene
- Longtime rail advocates among those killed
- These are some of the people who rushed to help the survivors
- Lakewood mayor had predicted new Amtrak rail line would lead to fatalities
- Man pulled gun on motorist taking food to Amtrak derailment first responders, prosecutors say
- Complete coverage »
Sound Transit, which owns the bridge, will also paint over graffiti, said transit spokesman Geoff Patrick. News watchers around the country saw a huge tagger’s mark in footage of wreckage.

Learn more about Traffic Lab » | Follow us on Twitter »
Contractors will be on the bridge Thursday night to begin fabricating and installing metal bridge-support brackets near the west end, Patrick said. Replacement of 25 damaged railroad ties is already underway, he said, while damaged rails and rock ballast must be restored.
WSDOT said Thursday it won’t run Amtrak passenger trains there until positive train control technology is completed next year. But repairs are still needed now, because local freight trains will use that area. Sound Transit will seek compensation from Amtrak, which has already promised in public announcements to pay for all damage.