County of Orange Pavement Management System and Sustainable Treatment Program Clark Shen, Manager OC Construction Materials Lab Krishna Nadaraja, Senior Civil Engineer, OC Construction Materials Lab

Pavement Management System History  Orange County’s PMS system (OCPMS) was one of the first in the nation and was developed in 1982 under the direction of the County’s Board of Supervisors with the objective “to develop a systematic methodology for determining roadway conditions, to define rehabilitation strategies, and to establish a process where preventative mode of maintenance work is planned and performed on all paved unincorporated County roads.”  The result was OCPMS, and by 1991 the backlog of streets in need of immediate repair was eliminated-- $5 million under budget and a year earlier than anticipated.

Pavement Management System Network The County’s PMS Unit currently maintains:  320 County Road Miles 60 miles Arterials 260 miles Locals 1,921 individual street segments  280 Road Miles for contract cities  County’s Current PCI: 74

1.Alligator Cracking 2.Bleeding/flushing 3.Block Cracking 4.Bumps and Sags 5.Corrugation 6.Depression 7.Edge Cracking 8.Joint Reflection Cracking 9.Lane/Shoulder Drop Off 10.Longitudinal and Transverse Cracking 11.Patch/Utility Cut 12.Polished Aggregate 13.Potholes 14.Railroad Crossing 15.Rutting 16.Shoving 17.Slippage Cracking 18.Swell 19.Raveling 20.Weathering There are 20 main distresses that can affect roads: Roadway Distresses

MicroPAVER™ Software  In 2011, as mandated by the Orange County Transportation Authority (OCTA), all local and city governments in Orange County were required to use MicroPAVER™ in order to receive Measure M funding for all road projects.

A laser survey profilometer measures surface distresses. Orange County’s roadway network is surveyed biennially. Due to the size of the County’s roadway network, semi-automated vehicles are used to track distresses. Pavement Evaluations

County Pavement Treatments / Administration Crack Sealing Asphalt Overlay (ARHM)* Slurry Seal (TRMSS) Job Order Contracting Reconstruction *All County Overlay projects use Recycled Asphalt Pavement (RAP)

Projects completed in 2014:  Northwest Tustin Arterial Overlay - $1M  Slurry Seal of Various Streets in Orange County, $1M  Tucker Wildlife Lot Overlay – $46,000  Hewes Avenue Overlay - $277,000  Esplanade Ave Overlay - $163,000  Northwest Tustin Local Street Overlay NE Portion - $677,000  Bristol Street Overlay - $275,000 TOTAL: ~ $3.5M Pavement Preservation Projects

Projects started in 2014, to be completed in 2015:  Anaheim Island Slurry Seal - $550,000  Antonio Parkway Slurry Seal - $650,000  Lemon Heights Slurry Seal - $80,000  Modjeska Canyon Road Overlay - $600,000  Northwest Tustin Street Local Overlay - $2.16M (NW Portion SE Portion SW Portion)  Amapola Street Overlay - $100,000  Glassell Street Overlay - $250,000  Justice Center Dr and Hospital Frontage Rd Overlay - $150,000  PCC Work Anaheim Island/El Modena Island - $225,000 TOTAL: ~ $4.77M Pavement Preservation Projects

Subgrade Stabilization Any subgrade stabilization recommendations for paving projects are provided by the OC Construction Materials Lab:

Lessons Learned  The systematic approach of using less expensive cyclic maintenance (slurry seals) has deterred future deterioration and reduced and stabilized budget expenditures.  Annual street evaluations to determine pavement condition is an essential part of the system and provides current usable information to determine which streets require maintenance or are showing signs of rapid deterioration.  Preventative maintenance in the early stages of pavement distress is less costly than major repairs after the street has already failed.

Challenges Orange County vs. other Southern California Association of Governments (SCAG) Counties