Sections of Saw Mill Run closing for bridge replacement project

Sections of Saw Mill Run Boulevard in Pittsburgh will be closed in both directions from Wednesday evening to early Saturday morning for a bridge replacement project.

Starting at 7 p.m. on Wednesday, southbound traffic will be detoured between the West End Circle and the Parkway West, according to PennDOT.

Northbound traffic will close to traffic at 9 a.m. Thursday between the on-ramp to the Parkway West and the West End Circle.

The closures in both directions are expected to last until 6 a.m. on Nov. 2.

The project will replace the Shaler Street Bridge, which has been pre-fabricated in a temporary staging area adjacent to Route 19.

The new bridge spans will be moved into place using a self-propelled modular transporter, which is the first time transportation agency has used this technique.

The transporter is a platform vehicle with a large array of wheels that is used to move massive objects such as bridge sections.

Crews will continue work on the bridge for approximately two weeks before it is reopened. Replacing the bridge using traditional construction techniques would take approximately six months, according to PennDOT.

The following posted detours will be used to reroute traffic:

Northbound Route 19

Take the left-hand ramp to West 376/South 19 toward Carnegie/Airport

Turn right onto Woodville Avenue

Turn right onto Greentree Road

Greentree Road becomes Wabash Street

Turn right onto South Main Street

Follow South Main Street to the West End Circle

Southbound Route 19

From the West End Circle, take Steuben Street

Turn left onto Short Street

Bear right onto South Main Street

Turn left onto Wabash Street

Wabash Street becomes Greentree Road

Turn left onto Woodville Avenue

Turn right onto the ramp to I-376 Parkway West

To continue to southbound Route 19, bear left toward South Truck 19/51 toward Uniontown

Stay left toward East 376/South 51 toward Uniontown

Take the South Truck 19/51 ramp (Exit 69B) toward Uniontown