UPDATE as of 3:45 p.m.: All lanes are cleared, but a four-mile backup remains, according to the state Department of Transportation.

INITIAL POST: A crash that happened at 12:45 p.m. just north of Bridgeport Way on southbound Interstate 5 is causing mile-long backups on both southbound I-5 and state Route 512, according to the state Department of Transportation.

The two right lanes of southbound I-5 are blocked.

State Patrol troopers are at the scene.

Check back for updates.

A single-car rollover crash at the Pierce-King county line is blocking three lanes of southbound Interstate 5 and causing backups, WSDOT reported.

The accident happened about 11:30 a.m. Backups extend about 1 1/2 miles as of 11:38 a.m.

UPDATE as of 8:23 a.m.: All lanes are now open.

INITIAL POST: A collision on northbound state Route 161 just south of 176^th Street East in South Hill is blocking all northbound lanes, according to the state Department of Transportation.

The accident occurred about 7:45 a.m. at milepost 21.

State troopers and paramedics are on scene.

A collision on southbound Interstate 5 near McKinley Way is blocking the two left lanes, according to the state Department of Transportation.

The accident occurred about 5:15 p.m. at milepost 134.

Emergency responders are on scene.

UPDATE AS OF 7:10 A.M.: All lanes are now open.

UPDATE as of 5:08 p.m. All lanes have been cleared, according to WSDOT.

UPDATE as of 5:04 p.m. The left HOV lane is blocked, according to WSDOT.

INITIAL POST: A crash on the eastbound Tacoma Narrows bridge is blocking the two left lanes of the roadway, according to the state Department of Transportation.

The crash happened at 4:45 p.m. State Patrol and emergency responders are at the scene.

Further details were not immediately available. Check back for updates.

UPDATE as of 5 p.m. All lanes are cleared, according to WSDOT.

INITIAL POST: A crash on southbound Interstate 5 at 54th Street East in Fife is causing a backup, according to the state Department of Transportation.

The HOV lane is blocked, and emergency responders are on the scene, WSDOT officials said at 3:30 p.m.

The crash happened at 3:15 p.m.

UPDATE: All lanes are clear, according to WSDOT.

INITIAL POST: State Route 302 is blocked eastbound at 118th Avenue Northwest and a detour is in place, according to the state Department of Transportation.

A collision about 4:30 p.m. blocked the roadway, department officials said.

The State Patrol is on the scene.

UPDATE as of 5 p.m. All lanes are cleared, according to WSDOT.

INITIAL POST: A tree and power lines are blocking both directions of state Route 706 at mile 10.5 near Kernahan Road East, on the edge of Ashford, according to the state Department of Transportation.

A PUD crew is on the scene. No detour is available.

The blockage was reported about 2:15 p.m., according to WSDOT.