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Statewide Local Streets & Roads Needs Assessment California Transportation Commission April 15, 2009 PowerPoint PPT Presentation

Statewide Local Streets & Roads Needs Assessment California Transportation Commission April 15, 2009 $? Study Objectives What are conditions of local streets & roads? How much will it cost to improve/maintain pavements in an acceptable condition? What are safety, traffic & regulatory needs?

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Statewide Local Streets & Roads Needs Assessment California Transportation Commission April 15, 2009

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Statewide local streets roads needs assessment california transportation commission april 15 2009 l.jpg

Statewide Local Streets & Roads Needs Assessment California Transportation CommissionApril 15, 2009


Study objectives l.jpg

$?

Study Objectives

  • What are conditions of local streets & roads?

  • How much will it cost to improve/maintain pavements in an acceptable condition?

  • What are safety, traffic & regulatory needs?

  • Is there a $$ shortfall? If so, what is it?


Local streets roads are huge part of state network l.jpg

Local Streets & Roads are Huge Part of State Network

81% of California’s pavements are owned by cities and counties!


It s not just pavements l.jpg

Sidewalks

ADA ramps

Curb & gutter

Storm drains

Others

It’s Not Just Pavements …


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Study Assumptions

  • 10 year analysis period

  • Constant 2008 $

  • Pavement goal is best mgmt practices

  • Inclusion of safety, traffic & regulatory elements

  • Does not include new streets, capital improvements, bridges


Data collection l.jpg

No Data

7% of centerline

miles

Data received

93% of centerline

miles

Data Collection

  • Total of 406 agencies

    • 56 counties

    • 350 cities

  • Missing 130 agencies

    • Mostly small cities

    • No data

    • No resources

29% no data

71% data rec’d


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Are Data Representative?


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Quality Assurance

  • Validation checks

    • Lengths – compared with HPMS

    • Areas – simple checks

    • Math errors

    • Mismatched units

    • Tests of reasonableness

  • Made follow-up calls/emails – only medium/large agencies


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How Good Are Pavement Data?


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Quality of Safety, Traffic & Regulatory / $$ Data

  • Safety, traffic & regulatory

    • 188 partial, 58 complete

  • Funding/expenditures

    • 29 counties & 108 cities responded


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Pavement Condition Index

100

Good - Excellent

70

At Risk

50

Poor

25

Failed

0


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Statewide Average PCI = 68


Why is 68 critical l.jpg

$2/sy

68

$15-40/sy

$40-70/sy

$60-100/sy

Why is 68 Critical?


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Pavement Condition Index

70-100 (Good/Excellent)

50-69 (At Risk)

25-49 (Poor)

Average County-wide PCIs

All green counties have a PCI <80


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Needs Calculations

  • Pavement condition goal = reach best management practices in 10 years

  • M&R decision tree

  • Performance (prediction) models

  • Escalation factors

  • Calculate “biggest bang for the buck” i.e. optimization


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Funding Sources


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$79B

68 (at risk)

PCI

Backlog ($ billion)

48 (poor)

$37B

2008

2033

What Happens If We Don’t Get More Funding?


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What Happens If We Don’t Get More Funding?


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38 cents/gallon!

38 cents/gal

Total 10 Year Shortfall ($B)


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Summary

  • Good News

    • Data received represents 93% of local system

    • Statewide average PCI = 68

    • Gas is $2.25/gallon today

  • Not so good news

    • PCI = 68 is at risk category & drops to 48 by 2033 with existing funding

    • Need to more than double existing funding to maintain transportation assets


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Questions?

Contact

Margot Yapp, P.E.

Vice President/Principal

Nichols Consulting Engineers, Chtd.

[email protected]


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