DIORIO. PITTSBURGH’S ACTION NEWS FOUR. WE HAVE A BREAKING WEATHER ALERT IMPACTING OUR LOCAL HIGHWAYS AS SNOW COMES THROUGH OUR AREA. BECAUSE OF THE STORM, PENNDOT HAS REDUCED THE SPEED LIMIT TO 45MPH ON I-376 AND I-79 IN ALLEGHENY, BEAVER, AND LAWRENCE COUNTY. SO BE AWARE OF THAT. ALSO ON I-80 IN CLARION AND JEFFERSON COUNTIES. WE WILL TAKE ANOTHER LOOK AT THE LIVE DRIVE FOR CONTINUING TO GO THROUGH MARS. BUTLER COUNTY SNOW ALREADY STARTING TO COVER ROADS AND IMPACTING VISIBILITY IN SOME OF THE AREAS. YOU GOT TO BE CAREFUL OUT THERE TONIGHT. PENNDOT CREWS ARE TREATING ROADWAYS THROUGHOUT THE AREA. IT’S IMPORTANT TO DRIVE SLOWLY AN
Speed reduced on Parkways, I-79 in part of Western Pennsylvania
Updated: 8:02 PM EST Dec 31, 2025
The Pennsylvania Department of Transportation has reduced speed limits on several busy interstates in Western Pennsylvania. Winter weather alerts: Read the alert for your countyInteractive radar: Track the snowInteractive traffic: Check the roadsSevere weather alerts: Sign up for FREE alerts to your phone or emailDue to winter weather moving through the area, PennDOT has reduced speed limits to 45 miles per hour on the following roads in Allegheny County: Interstates 79, the Parkways East and West, the Parkway North, Interstate 579 and Route 28. The same speed reduction is also in effect along the Beaver Valley Expressway in Beaver County and Interstate 376 and Interstate 79 in Lawrence County. In Washington and Westmoreland counties, speed is reduced on I-70. Interstate 79 is also reduced for Washington County. During this time, commercial vehicles must move to the right lane.
The Pennsylvania Department of Transportation has reduced speed limits on several busy interstates in Western Pennsylvania.
Winter weather alerts: Read the alert for your county
Interactive radar: Track the snow
Interactive traffic: Check the roads
Severe weather alerts: Sign up for FREE alerts to your phone or email
Due to winter weather moving through the area, PennDOT has reduced speed limits to 45 miles per hour on the following roads in Allegheny County: Interstates 79, the Parkways East and West, the Parkway North, Interstate 579 and Route 28.
The same speed reduction is also in effect along the Beaver Valley Expressway in Beaver County and Interstate 376 and Interstate 79 in Lawrence County. In Washington and Westmoreland counties, speed is reduced on I-70. Interstate 79 is also reduced for Washington County.
During this time, commercial vehicles must move to the right lane.