News Flash

Paso Robles City Press Releases

Posted on: March 27, 2023

Paso Robles Pothole Information


A few of the more common questions answered about how the City of Paso Robles handles potholes.

It’s not the constant pressure of car tires that wears the road down and causes potholes, but water that is actually causing the damage. Once water gets under pavement, it expands and contracts as it freezes and thaws, pushing against the roadbed and pavement. Once it thaws, there is space left where ice was, so the road is weakened. As cars and trucks drive over the weak spots, they crack and bits of the pavement chip away. 

A few of the more common questions answered about how the City of Paso Robles handles potholes. 

Q: How does the City respond to potholes?

A: Staff responds to potholes as they are reported via the MyPaso Request Tracker, emails, dispatch, and/or phone calls. Repair is prioritized depending on the location, safety concerns, and available material. Major arterial roadways such as Creston Road and Niblick Road are typically a top priority due to frequent use.   

When not responding to emergencies, staff operate a hot mix patch truck on a grid moving through the City systematically filling in potholes.

Q: What is the difference between hot mix and cold mix for pothole repair?

A: The hot mix method entails first removing rock, dirt and debris in and around the pothole, applying an emulsion to help the hot mix adhere to the hole, then filling and sealing the hole with hot mix asphalt. This aggregate mix is heated and maintains the heat while in the patch truck. This method prevents water from being able to penetrate around the patch again, stopping the pothole from reforming (unless flooded by water or another pothole forms next to the patch).  This method is considered a more permanent patch and typically has a longer life than cold mix. Below are other items to note: 

  • CalPortland supplies hot mix asphalt to the City.  Currently, they are only producing 1/2-inch hot mix aggregate, which staff uses effectively on larger potholes.  
  • The smaller potholes require 3/8-inch aggregate, which is currently not being produced by our supplier. 
    • We have one patch truck that can do 2-3 tons of mix daily. Staff continue to pick up 2-3 tons of hot mix every day (regardless of aggregate size) to fill in as many potholes as possible.
    • It is currently unclear when we will be able to get 3/8-inch hot mix aggregate.     

The cold mix method is when asphalt is simply shoveled into the pothole and smoothed over with a hand tool. This aggregate mix does not require heating.   Cold mix asphalt is not a permanent solution and can break up easily depending on a combination of heavy traffic and weather.  Below are other items to note:

  • The City purchases pallets of cold mix for pothole repair and is available at all times. Especially when hot mix is not available.Cold mix does not last very long, it breaks up easily, especially in major roadways.
  • This is typically a last resort and an interim quick fix. 

Staff continues to fill potholes during dry conditions.  Filling potholes during a rain storm is an emergency measure and not a common practice.  

Drivers are urged to be vigilant, practice safety, and be patient as we work through the rainy season and continue to fill potholes.

Please report potholes at, via the MyPaso App, by email to or by phone at 805.237.3861. All reports will be triaged and responded to as soon as possible.

Facebook Twitter Email

Other News in Paso Robles City Press Releases

SLO County Animal Services campus square

SLO Co Animal Services Update

Posted on: April 5, 2023
The Landing Paso Robles design vision

Draft EIR - The Landing

Posted on: June 7, 2023
Aerial photo of Paso Robles

Public Hearing - Fee Amendments

Posted on: June 6, 2023
Young siblings in beach chairs watching fireworks

4th of July Celebration

Posted on: April 12, 2023
CERT sandbagging

CERT Flood Response in Paso Robles

Posted on: January 24, 2023
Budget Award 2022

City of Paso Robles Wins Finance Award

Posted on: December 29, 2022
Vista Cerro area - mountain lion sighting

Mountain Lion Sighting in Paso Robles

Posted on: December 16, 2022

Vine Street Showcase Canceled

Posted on: December 10, 2022

Salinas River Flood Waters

Posted on: December 12, 2022
Lithium ion batteries

Lithium-Ion Battery Safety Warning

Posted on: October 11, 2022
Salinas Corridor Cleanup 9-13-22

Community Risk Reduction

Posted on: September 13, 2022
Homepage Spotlight_Oak at Sunset

Cannabis Regulation Survey

Posted on: August 2, 2022
Homepage Spotlight_Watering Days

Mandatory 3-day Watering Schedule

Posted on: June 10, 2022
Structure Fire Nighthawk Drive

Residential Structure Fire

Posted on: June 8, 2022
Development Impact Fees 2021_Homepage Spotlight

Annual Development Impact Fee Report

Posted on: December 29, 2021