Presentation is loading. Please wait.

Presentation is loading. Please wait.

COUNTY OF SAN DIEGO DEPARTMENT OF PUBLIC WORKS County of Los Angeles Public works 2015 Sustainable Pavement Round Table February 10, 2015.

Similar presentations

Presentation on theme: "COUNTY OF SAN DIEGO DEPARTMENT OF PUBLIC WORKS County of Los Angeles Public works 2015 Sustainable Pavement Round Table February 10, 2015."— Presentation transcript:

1 COUNTY OF SAN DIEGO DEPARTMENT OF PUBLIC WORKS County of Los Angeles Public works 2015 Sustainable Pavement Round Table February 10, 2015

2 Agenda: County of San Diego  Introduction to Pavement Network  Selection Criteria for Resurfacing  Pavement Preservation Projects  Pavement Recycling Projects  Subgrade Stabilization projects  Use of Reclaimed Asphalt Pavement  Lessons Learned  Sustainable Implementation challenges  Other information 2

3 3 Map of SD County Supervisorial Districts SD 5 SD 3 SD 4 SD 1 SD 2SD CL MI 164.95 21,072.45 384.83 40.56 5717.00 Total1,939.79

4 4 PAVEMENT NETWORK - CONDITION COUNTY OF SAN DIEGO  2012 Average PCI = 64 (Unincorporated Areas of County of San Diego)

5 5  MicroPaver ®  Community Planning Group Priorities  Road crew priorities / Customer Concerns  Distribution of funding by Supervisorial District lane mile percentages  Street Saver ® starting July 1, 2015 Selection Criteria Maintenance Projects COUNTY OF SAN DIEGO

6 6  Department Wide:  Fog Seal (shoulders and berms)  Slurry Seal ( Type 2 & 3) Conventional Polymer Modified REAS TRMSS  Chip Seal (Medium-fine & Medium) Conventional Polymer Modified  Road Crews Localized Repairs Skin Patching Crack Sealing PAVEMENT PRESERVATION: Projects & Rd Crews COUNTY OF SAN DIEGO

7 7 Advance planning to focus on pavement preventative maintenance PAVEMENT PRESERVATION PROJECTS COUNTY OF SAN DIEGO Chip Seal Cape Seal Slurry Seal

8 8  Slurry Seal –Via Del Charro, Rancho Santa Fe  0.49 mile Type 2 Slurry Seal including digouts PAVEMENT PRESERVATION – SLURRY COUNTY OF SAN DIEGO

9 9  Chip Seal – Honey Springs Road, Jamul  2 mile scrub seal including flush coat and digouts PAVEMENT PRESERVATION – CHIP SEAL COUNTY OF SAN DIEGO

10 10  Cape Seal, Bonita Glen Terrace, Bonita (Micromill, Scrub Seal with Type II)  Rejuvenating Sealer with 5/16” chips PAVEMENT PRESERVATION - CAPE COUNTY OF SAN DIEGO

11 11  COSD has not used Cold In-Place Recycling (CIR) or Cold Central Plant Recycling (CCPR)in recent years  14/15 AC Overlay Contract has initial CIR project - Dehesa Road (2.23 miles) 3” CIR with 1.5” cap of MAC 15-TR  With success on Dehesa Road, we expect to increase our use of CIR in future contracts  COSD considers CIR and CCPR reconstruction/rehabilitation rather than preventative maintenance.  We are assessing the cost-effectiveness of CCPR as part of our Preventative Maintenance Program  We are beginning to stockpile AC grindings from mill/fill projects for general re-use by road crews. PAVEMENT RECYCLING PROJECTS COUNTY OF SAN DIEGO

12 12  Current staff has minimal experience with the use of these processes.  In general, we are moving away from removing all existing AC. Many rural roads do not have engineered structural section complicating recycling.  Require experienced contractors  We would consider these treatments for large segments of existing road with substantial subgrade issues  Use alternate methods such as overlay and fabric rather than removal of entire structural section  We would address this issue via our Capital Improvement Program Project Development Section SUBGRADE STABILIZATION PROJECTS COUNTY OF SAN DIEGO

13 13 USE OF RECLAIMED ASPHALT PAVEMENT COUNTY OF SAN DIEGO  Allow for RAP in all asphalt resurfacing projects (up to 15%) per 2010 Caltrans Standard Specifications Section 39-1.02F, “Reclaimed Asphalt Pavement”  We are developing a RAP program that includes:  Chip Seals  Build a stockpile of grindings for future sustainable projects  All road crews to use the stockpile for backfilling local repairs, shoulder backing, etc…

14 14  Expectations: What performance or life cycle do you expect from a specific treatment  Consider all Options: Conventional AC may be the most appropriate treatment for some applications  We need to become more knowledgeable regarding limitations and benefits of sustainable treatments  Experienced and knowledgeable construction inspector staff is critical to the success of sustainable treatment use  Road Crews: Most knowledgeable about their roads LESSONS LEARNED COUNTY OF SAN DIEGO

15 15  Flat revenues  New regulations (ADA requirements)  Drain on Road Fund: emergencies/natural disasters  Standard specifications to support new procedures  Staffing shortages CHALLENGES ENCOUNTERED COUNTY OF SAN DIEGO

16 16 OTHER INFO COUNTY OF SAN DIEGO  Preventative Maintenance Project Team  Advanced Planning: Road Maintenance  Geotechnical: CIP Materials Lab  Project Management: CIP Project Development  Construction: CIP Construction Inspection  Maintenance Contracts allow for 3 different types of seals. Contractor selects and bids appropriately:  TRMSS  REAS  RPMS  Warm Mix asphalt  Placed a test section on a high volume road. So far operating adequately

17 17

Download ppt "COUNTY OF SAN DIEGO DEPARTMENT OF PUBLIC WORKS County of Los Angeles Public works 2015 Sustainable Pavement Round Table February 10, 2015."

Similar presentations

Ads by Google