The Sewickley Bridge will shut down in both directions for about 4 hours tonight while repairs are made, PennDOT announced at about 4:45 p.m. this afternoon.

The bridge will closed 8 p.m. to about midnight.

All bridge traffic will be detoured:

From Sewickley

• Motorists will take Route 65 southbound;

• Take the left-hand ramp to Interstate 79 toward Erie/Washington;

• Take the left-hand ramp to South I-79 toward Washington;

• Merge onto southbound I-79 and cross the Neville Island Bridge;

• Take the Neville Island to Route 51 (Exit 65) off-ramp;

• Turn left onto Grand Avenue;

• Cross the Coraopolis Bridge;

• Turn right onto northbound Route 51 (Fourth Avenue);

• Follow northbound Route 51 back to the Sewickley Bridge.

From Moon Township

• Motorists will take Route 51 southbound;

• Take the ramp to northbound I-79 toward Erie;

• Merge onto northbound I-79 and cross the Neville Island Bridge;

• Take the ramp to Route 65 toward Emsworth/Sewickley (Exit 66);

• Continue following the ramp to Route 65 toward Emsworth/Sewickley;

• Take the ramp to North 65 toward Sewickley;

• Merge onto northbound Route 65 and follow back to the Sewickley Bridge.

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