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Drivers beware. An abundance of evening work will snarl traffic on Interstate 5 (I-5) and Interstate 405 (I-405) this week.

Bellevue work ahead

For the next two weeks, contractors working for the (WSDOT) will repair sections of guardrail and replace guardrail protective end caps, or crash cushions at the I-405/State Route (SR) 520 interchange in Bellevue.

This is part of the , across King, Snohomish and Whatcom counties. The project aims to repair and update damaged guardrails and end caps to withstand today’s heavier electric vehicles.

Between 9 p.m. and 5 a.m., drivers will see nightly closures at the I-405 north exit ramp to SR 520 west. A detour will send drivers SR 520 east to the 148th Avenue Northeast exit, from there drivers can access SR 520 west.

Work is scheduled on weekdays only, wrapping up Friday, April 12.

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Mount Lake Terrace to see extra traffic

Both directions of I-5 will have evening lane reductions, along with ramp closures between SR 104 and 220th Street Southwest, through Friday, April 5.

Sound Transit continues working on the , which will connect parts of Snohomish County to the existing 1-Line, which goes as far south as Angle Lake near Seattle-Tacoma International Airport.

I-5 north sees lane, ramp closures

Several lanes between SR 104 and 220th Street Southwest will close from 9 p.m. to 5 a.m. nightly. The off-ramp to 220th Street Southwest also will close.

The SR 104 west on-ramp will close from 9 p.m. to 5 a.m. nightly. The off-ramp to 236th Street Southwest will close from 9 p.m. to 5 a.m. nightly. The 46th Avenue West HOV on and off-ramps will close from 11 p.m. Thursday, April 4, to 5 a.m. Friday, April 5.

I-5 south drivers expect lane, ramp closures

Several lanes between 220th Street Southwest and SR 104 will close from 8 p.m. to 5:30 a.m. nightly. The 220th Street Southwest on-ramp also will close. The off-ramp to SR 104 will close from 10 p.m. to 1 a.m. nightly.

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The three right lanes between the 44th Avenue West on-ramp and 220th Street Southwest will close from 8 p.m. to 5 a.m. nightly, Wednesday, April 3, through Friday morning. The 44th Avenue West on-ramp will close from 11 p.m. to 4 a.m. nightly, Wednesday, April 3, through Friday morning.

The off-ramp to 220th Street Southwest will close from 11 p.m. to 4 a.m. nightly, Wednesday, April 3, through Friday morning. The 46th Avenue West HOV on and off-ramps will close from 11 p.m. Thursday, April 4, to 5 a.m. Friday.

Drivers should plan for delays and consider alternate routes during those hours.

You can read more of Nate Connors’ stories here. Follow Nate on X, formerly known as Twitter,  and the ³ÉÈËXÕ¾ Newsradio traffic team  for more traffic updates.