The carpool lanes in both directions of Interstate 405 between State Route 167 and the West Valley Highway were closed for several hours Tuesday to repair a ramp-metering system damaged by workers widening the freeway.

Next week, crews working for the Washington state Department of Transportation will continue work to widen I-405 and SR 167 in Renton and Tukwila.

On Monday, during the night and early morning hours, crews may close the ramp from southbound SR 167 to southbound I-405 for striping and barrier work. Detours will be posted.

Monday through Thursday, during the night and early morning hours, crews may close up to two lanes in each direction on I-405 between SR 167 and I-5 for barrier and electrical work. During the night and early mornings hours, crews may also close two lanes of southbound SR 167 between I-405 and South 180th Street while crews continue to build the foundation for a new southbound lane on SR 167.

In a project near Black Diamond, crews with a contractor working for the state completed emergency repair work on the south end of the Kummer bridge on State Route 169 near Black Diamond in time for the Fourth of July weekend.

“The contractor understood that it was very important to get the bridge open before the holiday weekend,” said Lorena Eng, the transportation department’s regional administrator.

State maintenance crews on Thursday morning opened one lane of the bridge to all vehicle traffic. Traffic will alternate in each direction, guided by traffic signals at each end of the bridge.

Drivers should expect delays of no more than three minutes. Over-height, over-weight and over-width vehicles may not use the bridge at this time, according to officials.

The bridge could fully reopen by the end of the weekend.

Significant movement in the landslide at the south end of the Kummer bridge had prompted the transportation department to close the bridge last week.

Crews drilled core samples to assess the stability of the entire roadbed. State experts determined the weakness was limited to the soil under the northbound lane and could be temporarily fixed using specialized slope-stabilizing nails.

Long-term repairs to the stabilize the landslide could begin in September.