County of Orange Pavement Management System and Sustainable Treatment Program

Clark Shen, Manager OC Construction Materials LabKrishna 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

There are 20 main distresses that can affect roads:

1. 2. 7. 10. 11. 13. 19.

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

*All County Overlay projects use Recycled Asphalt Pavement (RAP)

Projects completed in 2014:

Northwest Tustin Arterial Overlay - $1MSlurry Seal of Various Streets in Orange County, 2013-14 - $1MTucker Wildlife Lot Overlay – $46,000Hewes Avenue Overlay - $277,000Esplanade Ave Overlay - $163,000Northwest Tustin Local Street Overlay NE Portion - $677,000Bristol Street Overlay - $275,000

TOTAL: ~ $3.5M

Pavement Preservation Projects

Projects started in 2014, to be completed in 2015:

Anaheim Island Slurry Seal - $550,000Antonio Parkway Slurry Seal - $650,000Lemon Heights Slurry Seal - $80,000Modjeska Canyon Road Overlay - $600,000Northwest Tustin Street Local Overlay - $2.16M (NW Portion SE Portion SW Portion)Amapola Street Overlay - $100,000Glassell Street Overlay - $250,000Justice Center Dr and Hospital Frontage Rd Overlay - $150,000PCC 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