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 $? 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

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

study objectives
$?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
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
Sidewalks

ADA ramps

Curb & gutter

Storm drains

Others

It’s Not Just Pavements …
study assumptions
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
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

quality assurance
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
quality of safety traffic regulatory data
Quality of Safety, Traffic & Regulatory / $$ Data
  • Safety, traffic & regulatory
    • 188 partial, 58 complete
  • Funding/expenditures
    • 29 counties & 108 cities responded
pavement condition index
Pavement Condition Index

100

Good - Excellent

70

At Risk

50

Poor

25

Failed

0

why is 68 critical
$2/sy

68

$15-40/sy

$40-70/sy

$60-100/sy

Why is 68 Critical?
average county wide pcis
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

needs calculations
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
what happens if we don t get more funding
$79B

68 (at risk)

PCI

Backlog ($ billion)

48 (poor)

$37B

2008

2033

What Happens If We Don’t Get More Funding?
summary
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
questions

Questions?

Contact

Margot Yapp, P.E.

Vice President/Principal

Nichols Consulting Engineers, Chtd.

[email protected]

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