California Asphalt Pavement Association 2013 Spring Conference

Amarjeet S. BenipalState Pavement Engineer

April 25, 2013

12 distinctly different Caltrans Districts with varying needs

Pavement Inventory

16,400 lane miles Urban Areas 70% Rural Areas 30%

Concrete Asphalt

33,200 lane miles Rural Areas 70% Urban Areas 30%

3

2011 State of the Pavement

Caltrans Pavement Objectives

1. Sustainability

2. Asset Management

3. Worker Safety

4. Future Financial Trends

What is Sustainability?“Meeting the needs of the present without compromising the ability of future generations to meet their own needs” World Commission on Environment and Development, 1987

How Is Caltrans Being Sustainable?By building pavements to last multiple generations, with as much recycled material as possible.• Quality & Performance• Cost Effectiveness

Caltrans Sustainable Pavement Initiatives Efforts

1. Planning

2. Design

3. Materials & Technologies

4. Preservation

Sustainability – PlanningLife Cycle Cost Analysis (LCCA)

Life Cycle Cost Analysis - Design

Analysis done to find the most cost effective pavement based on cost associated with:

Initial Cost

Maintenance Cost

Anticipated Rehabilitation

Cost

User Delay

Sustainability – DesignLong-Life Pavement

1. Asphalt Pavement Asphalt: I-710, I-5, I-80 etc2. Concrete Pavement

a. Jointed Plain b. Continuously Reinforcedc. PrecastConcrete: I-680, I-710, I-15 etc

Sustainability – Materials & Technologies

1. Rubber Hot Mix Asphalt (RHMA)2. Pavement (RAP) / Recycled Asphalt

Shingles (RAS)3. Warm Mix Asphalt (WMA)4. Recycle Concrete Aggregates5. Supplementary Cementious Materials

Sustainability – Materials & Technologies

6. Cold In-Place Recycling (CIR)7. Full Depth Recycling (FDR)8. Porous Pavement

– Asphalt & Concrete9. Smooth Pavement10. Quiet Pavement

Rubber Hot Mix Asphalt (RHMA) RHMA been successfully used in CA for over 30 years. CA generates more than 44 million scrap tires every year. A two-inch RHMA overlay uses about 2,000 scrap tires per

lane mile.

15.610.9

5.9

15.717.9

34.2

30.4

36.329.5

23.630.5 34.7

0

10

20

30

40

50

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

2017

Amou

nt o

f RH

MA,

per

cent

Calendar year

35

2520

AB 338 Goals

Recycled Asphalt Pavement (RAP) & Recycled Asphalt Shingles (RAS)

Adds recycled asphalt pavement to HMA mix Pilot projects in 2012/2013. Caltrans supports RAP because it is:

Cost effective.Reduces the aggregate use preserving landfill space.Reduces green house gases emissions.

Warm Mix Asphalt (WMA)Accomplishment: One Million Tons Paved

RHMA-G

OGFC

RHMA-O

DGAC

Recycled Concrete Aggregate (RCA)

Used as Base Materials Development of new and revised standards Use of available materials

Supplementary Cementious Materials

Cold In-Place Recycling

Full Depth Recycling

Pervious Pavement Porous Asphalt Pervious Concrete

Cited in three Leadership in Energy and Enviornmental Design (LEED) credits under Sustainable Sites: 5.1 6.1 6.2

Smooth Pavement

1. Fuel Efficiency

2. New Construction at IRI 60 or less

3. Use of Inertial Profiler

Quiet Pavement

1. Quality of Life2. Both Asphalt & Concrete Pavements

a. Open Grade Friction Course (OGFC)b. Grindingc. New Generation Groove / Grind

Focus on Pavement Preservation Increase efficiency of project selection:

Right pavement strategy at the right time

Age

Pav

emen

t co

nd

itio

n

Preservation @ $1

Rehabilitation @ $6

Reconstruction @ $20

Optimized Preservation Plan

Preservation Plan

Unattended Pavement

0

75

25

50

100

Rehabilitation

Corrective Maintenance

Reconstruction

Preventative Maintenance

Fair

Good/Excellent

Poor

Pav

emen

t C

on

dit

ion

In

dex

Time (Years)

0 302010

Asset Management

Worker Safety

• Select the Right Strategy– Quality Assurance– Longer Lasting– Would Not Have

to Come Back to Repair or Fix It

– Less WorkerExposure to Traffic

On-System Allocations and Projected Allocations(Adjusted for Construction Cost Index, in 11-12 dollars)00-0

1

01-02

02-03

03-04

04-05

05-06

06-07

07-08

08-09

09-10

10-11

11-12

12-13

13-14

14-15

15-16

16-17

0

1,000,000

2,000,000

3,000,000

4,000,000

5,000,000

6,000,000

Local Bond Other Capacity Increasing SHOPP

Allo

catio

ns ($

1,00

0s)

SHOPP

Other

Bond

Local

Actual Projected

Efficiently Managing California Roads!Thank You