Crews have cleared away a serious-injury crash that blocked three lanes of westbound state Route 18 near state Route 167 this morning, the state DOT reports.

Drivers were backed up for a mile at one point.

UPDATE at 4:55 p.m.: All lanes are now open, WSDOT reports.

INITIAL: A collision is blocking the eastbound off-ramp from state Route 18 to northbound state Route 167 in Auburn, according to the state Department of Transportation.

The collision was reported at 4:30 p.m. State troopers and a tow truck are on scene.

A two-week construction project is expected to begin Wednesday on Lea Hill Road/SE 312^th Street in Auburn, city officials said.

The work will take place weekdays from 8 a.m. to 5 p.m. between 105^th Place SE and 124^th Avenue SE.

Drivers can still get through the area but traffic may be reduced to alternating one lane in each direction.

Crews will be patching pavement. The work is weather dependant.

The busy ramp from westbound state Route 18 to northbound Interstate 5 is set to be closed from 5 a.m. Monday until Sept. 1.

According to the state Department of Transportation:

A 2.5-mile detour will send drivers onto northbound state Route 99 to South 320th Street. Drivers coming from Auburn can use northbound state Route 167 and westbound state Route 516 to reach I-5.

During the closure, crews will demolish the westbound state Route 18 to northbound I-5 ramp, and move, raise and reopen it less than 100 yards away. When it reopens, the entrance will be farther east …

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Sections of 132nd Way Southeast will be closed Wednesday while crews pave the roadway, according to Auburn city officials.

The work is scheduled to be done from 7 a.m. to 4 p.m. near the Kendal Ridge development.

Flaggers will be on scene directing traffic through the intersection. Drivers should expect delays.

Crews are beginning work Tuesday in the area of E Street Northeast in Auburn and drivers should expect delays for the next two weeks.

E Street Northeast between East Main Street and 3^rd Street Northeast will be closed to northbound traffic and 3^rd Street Northeast to 4^th Street Northeast will be closed to all traffic.

The 2010 Local Street Pavement Preservation project calls for damaged cement concrete panels to be replaced in the street.