Installation of Speed Humps on California Avenue Next Week

PITTSBURGH, PA (August 13, 2021) The Department of Mobility and Infrastructure (DOMI) is pleased to announce the installation of traffic calming measures on California Avenue from Rankin Avenue to Bainton Street.  Data collected during the fall indicated that 94% of vehicles traveling on California Avenue exceed the posted speed limit of 25 mph, with an 85th percentile speed of 41 mph.  Coupled with a long crash history, this rate of speeding indicated a strong need for a traffic calming intervention.

The project will include the construction of three speed humps on California Avenue.  Permanent signage and pavement markings will be installed to alert motorists of approaching speed humps.  Speed humps are midblock traffic calming devices that raise the entire wheelbase of a vehicle to reduce its speed.

Work is tentatively expected to begin the week of Monday August 16 through Friday August 20, 2021, and is expected to last two days, weather permitting.  Hours of construction will be 7:00 a.m. to 5:00 p.m.  One lane of traffic on California Avenue will be closed to traffic, with flaggers stationed at each intersection in order to allow for local traffic access to and from their residences.  Temporary "no parking" signage will be posted at each speed hump location.

If you have questions about this project or other traffic calming projects, you may contact us by email at, or by calling 3-1-1 or 412-255-2621.  You can learn more about DOMI’s Neighborhood Traffic Calming Program at


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Experimental - may have alignment issues.