Our Projects
Route 127 Cold In-place Recycling
Caltrans utilizes Partial Depth Recycling for the sustainable pavement rehabilitation of State Route 127 near Shoshone and Death Valley National Park.
State Route 43 Cold In-Place Recycling
Kern County, CA
Senate Bill 1, the Road Repair and Accountability Act of 2017 (SB 1) was signed into law in April 2017. As of Dec. 2020, Caltrans has invested more than $8.2 billion in approximately 1,200 state highway projects. Additionally, they have spent $8.4 billion for 4,400 city and county projects within the same period. SB 1 invests approximately $5.4 billion each year to fix roads, freeways, bridges, as well as strategically investing in transit. The funds are split equally between state and local projects and will be used to fix more than17,000 lane miles of pavement, 500 bridges and 5,500 culverts on the state highway system by 2027.
Caltrans utilizes many different pavement rehabilitation methods when rehabilitating their roadways and state highway system. SB 1 references the use of “advanced technologies and material recycling techniques” to reduce costs and greenhouse emissions. Some of the powerful recycling strategies used by Caltrans to rehabilitate pavement surfaces include Full Depth Recycling (FDR), Cold Central Plant Recycling (CCPR), and Cold In-place Recycling (CIR) which Caltrans now refers to as Partial Depth Recycling (PDR). One strategy may be better suited than another, depending on the pavement engineering assessment of each project’s pavement condition and stress level.
SB 1 calls for the “use of advanced technologies and material recycling techniques that reduce the cost of maintaining and rehabilitating the streets and highways.” Allen King, P.E. is the Senior Transportation Engineer for Caltrans. “CIR (PDR) is a great way for State to decrease its carbon footprint while also realizing a substantial cost savings when compared to a mill/fill strategy with digouts,” says King.
Cold In-place Recycling
Pasadena CIR – Jurupa Valley/LA Basin
We performed Cold In-place Recycling (CIR) on Orange Grove Boulevard in the city of Pasadena, the heart of Los Angeles County, CA alongside All American Asphalt who is the General Contractor and performed all the paving, installation, and compaction of the 100% recycled asphalt behind the CIR train. PRS utilized a smaller supplemental mill ahead of the CIR train which allowed a total recycle width and pave back of 16 feet wide in a single pass. The County of Los Angeles is no stranger when it comes to utilizing sustainable pavement solutions. PRS has been involved with numerous projects for and with the county over the past three decades. The county acknowledges the great work that we do and the benefits that come with it. CIR fits well into many projects for the local agencies due to very minimal lane closures and a 40:1 reduction in truck traffic. Traffic flows and stays open to the public throughout the operation, which is essential for the busy streets of Pasadena, thus a huge reduction in public inconvenience. Ara Maloyan, Director of Public Works for the City of Pasadena had this to say about the project.
“Cold In-place Recycling is setting the standard for California’s mission to be sustainable & green, and Pavement Recycling Systems is taking lead with the innovative approach. I truly believe in this technology and the environmental benefits it provides.“
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