Lane Restrictions Coming to Part of Route 51 in Jefferson Hills

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The Pennsylvania Turnpike Commission announced that starting on Monday, March 9, southbound traffic on Route 51 between Coal Valley Road and Jefferson Boulevard in Jefferson Hills will be reduced to one lane. This lane restriction will allow crews to work on removing and replacing an overhead sign for the Mon-Fayette Expressway project, which is expected to take place daily between 9 a.m. and 3 p.m. until March 27.

Why it matters

The Mon-Fayette Expressway project is a major infrastructure initiative that will extend the expressway from Route 51 in Jefferson Hills to the Parkway East in Monroeville. The lane restrictions on Route 51 are a necessary step in the ongoing construction, which has seen steady progress over the past several years.

The details

The lane restriction on Route 51 is being implemented to allow crews to remove an existing overhead sign for the Mon-Fayette Expressway and replace it with a new sign. The work is expected to take place daily between 9 a.m. and 3 p.m. until March 27, during which time southbound traffic on Route 51 between Coal Valley Road and Jefferson Boulevard will be reduced to a single lane.

• The lane restrictions will begin on Monday, March 9, 2026.
• The work is expected to be completed by March 27, 2026.

What’s next

Once the overhead sign replacement is complete, the lane restrictions on Route 51 will be lifted, and the expressway project will continue to progress towards its expected completion around the end of 2026.