Knowledge-Based Scheduling Analysis Software for Highway Rehabilitation and Reconstruction Projects

Abstract

Most of California's highway infrastructure was built between 1955 and 1970. These pavements had 20-year design lives, and many now require frequent maintenance. In 1998, the California Department of Transportation (Caltrans) launched the Long-Life Pavement Rehabilitation Strategies (LLPRS) program to rebuild approximately 2,800 lane kilometers of high-traffic-volume urban freeway in the 78,000-lane kilometer state highway network over a 10-year period. Priorities identified for the successful implementation of LLPRS projects are the selection of construction schedules and the development of traffic management plans that minimize road user and agency costs. This paper presents a construction simulation program called CA4PRS (Construction Analysis for Pavement Rehabilitation Strategies). The program was developed as a scheduling and production analysis tool for LLPRS projects for use during the planning and design stages. CA4PRS estimates the optimized distance and duration of highway rehabilitation projects. It takes into account the constraints of scheduling interfaces, pavement design, lane closure tactics, and contractor logistics. As a knowledge-based computer system on a Microsoft Access database, it uses Monte Carlo simulation, critical path method analysis, and linear scheduling. CA4PRS is designed to help highway agencies and paving contractors make construction schedule decisions that balance rehabilitation productivity, traffic inconvenience, and agency cost. Application of the CA4PRS model to urban freeway rehabilitation projects in California, including the I-10 Pomona, I-710 Long Beach, and I-15 Devore projects, has demonstrated its value in saving millions of dollars for both Caltrans and road users.

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References

Public Roads, 1996.

Ten-Year State Highway System Rehabilitation Plan 1998–99 Through 2007–08. Maintenance and Transportation Programming, California Department of Transportation, Sacramento, 1998.

Public Roads, July–Aug. 1998. www.tfhrc.gov/pubrds/julaug98/developing.htm. Accessed April 30, 2004.

Get In, Get Out, Stay Out! Proceedings of the Workshop on Pavement Renewal for Urban Freeways. TRB, National Research Council, Washington, D.C., 1998. gulliver.trb.org/publications/sp/getin_getout_stayout.pdf. Accessed May 10, 2004.

QuickZone. Turner-Fairbank Highway Research Center, Federal Highway Administration, 2001. www.tfhrc.gov/its/quickzon.htm. Accessed May 10, 2004.

Life-Cycle Cost Analysis in Pavement Design. Publication FHWA-SA-98–079. Federal Highway Administration, Washington, D.C., 1998.

Lee

E.-B.

, Ibbs

C. W.

, Harvey

J. T.

, and Roesler

J. R.

. Construction Productivity and Constraints for Concrete Pavement Rehabilitation in Urban Corridors. In Transportation Research Record: Journal of the Transportation Research Board, No. 1712, TRB, National Research Council, Washington, D.C., 2000, pp. 13–22.

I-405 Congestion Relief and Bus Rapid Transit Projects. Washington State Department of Transportation, 2002. www.wsdot.wa.gov/projects/I-405. Accessed Jan. 2, 2004.

Lee

E.-B.

, Harvey

J. T.

, Ibbs

C. W.

, and

S Martin

. Construction Productivity Analysis for Asphalt Concrete Pavement Rehabilitation in Urban Corridors. In Transportation Research Record: Journal of the Transportation Research Board, No. 1813, Transportation Research Board of the National Academies, Washington, D.C., 2002, pp. 285–294.

10.

Timm

, Voller

, Lee

E.-B.

, and Harvey

J. T.

. MultiCool: A Numerical Solution Program for Multi-Layer Cooling Time of Asphalt Concrete Pavement. International Journal of Pavement Engineering, Vol. 2, 2001, pp. 169–185.

11.

Lee

E.-B.

, Roesler

J. R.

, Harvey

J. T.

, and Ibbs

C. W.

. Case Study of Urban Concrete Pavement Reconstruction on Interstate 10. Journal of Construction Engineering and Management, Vol. 128, No. 1, 2002, pp. 49–56.

12.

Lee

E.-B.

, Harvey

J. T.

, Lee

, and Monismith

C. L.

. Fast-Track Asphalt Concrete Pavement Rehabilitation on I-710 in Long Beach, California, During 55-Hour Weekend Closures. Presented at 83rd Annual Meeting of the Transportation Research Board, Washington, D.C., 2004.

13.

Lee

E.-B.

, Harvey

J. T.

, and Thomas

. Integrated Design/Construction/Operations Analysis for Fast-Track Urban Freeway Reconstruction. Journal of Construction Engineering and Management (forthcoming).

14.

Highway Capacity Manual. TRB, National Research Council, Washington, D.C., 2000.

15.

CA4PRS. Division of Research and Innovation, California Department of Transportation. www.dot.ca.gov/research/roadway/ca4prs/ca4prs.htm. Accessed March 30, 2004.