City Council Study Session
April 26, 2022
Dan Baker, Quality Control Associate
Transportation And Public Works
Andrew Kozel, Materials Associate
Transportation And Public Works
PRESENTATION GOALS
What is PCI?
Pavement Condition Index (PCI)
Current Network Condition
Examples of Roadway PCI Conditions
Overview of our Roadway Network
Pavement is a City Asset
Current Value of our Pavement System
Project Selection Factors
Types of Pavement Treatments
Preservation or Rehabilitation
Examples and costs of each
Future Projects
Optimizing Construction Materials
Network Decline with Current Spending
30 Year Outlook
Questions?
2 PAVEMENT CONDITION INDEX
(PCI)
PCI is a rating system for pavement condition.
100 = newly constructed roadway
0 = completely failed roadway
Factors include impacts from repeated loading,
environmental stresses, and utility cuts.
PCI rating is the industry standard of measurement for pavement condition.
3 1007050250
Failed Poor At Risk Good
GOOD CONDITION: PCI = 80
4 PCI between 70-100 is classified as GOOD, 47% of Network
CURRENT NETWORK: PCI = 62
5 PCI between 50 - 69 is classified as At Risk, 21% of Network
POOR CONDITION: PCI = 35
6 PCI between 26 - 49 is classified as POOR, 28% of Network
VERY POOR CONDITION: PCI = 12
7 PCI between 0 - 25 is classified as Failed, 4% of Network
CURRENT NETWORK CONDITION
8 ● 512 Centerline Miles
● Average PCI = 62
● 47% Good
● 21% At Risk
● 28% Poor
● 4% Failed
9 CURRENT NETWORK CONDITION
CONTINUED…
Avg. 62 PCI
Avg. 62 PCI
PCI by Roadway Functional Type:
PCI by Network Area:
STAY AHEAD OF THE CURVE
Maximize Paving Dollars and Extend Roadway Life
Through Pavement Preservation by Keeping Good
Streets in Good Condition.
“Pavement preservation is a cost effective and greener approach to getting the most life out of your roads and making taxpayer dollars go further. In addition to cost efficiency, a pavement preservation approach is known to produce fewer greenhouse gas emissions, consume less
energy, and provide faster application times than the
alternative conventional approach” –Roadresource.org
10 TREATMENT TYPES AND COSTS
Crack Seal
11 Slurry Seal
$4+ Square Yard
Adds 5-8 Years of Life
$1+ Linear Foot
Cape Seal
$10+ Square Yard
Adds 8-10 Years of Life
$52+ Square Yard
10-15 Years of Life
$200+ Square Yard
20-25 Years of Life
Overlay HMA Reconstruct
PCC Reconstruct
$190+ Square Yard
60-75 Years of Life
PRESERVATION CURVE VS.
REHABILITATION CURVE
12 $4 SY
Slurry Seal
$52 SY
Overlay
$200 SY
Reconstruct
Pavement Project Life-Cycle Cost Per Square Yard
Condition PCI
0 25 50 75 100
PAVEMENT ASSET & PROJECT
SELECTION
Replacement value of City pavement asset over $1.4 Billion $15.5M/ year (1.1% of value) to maintain current PCI of 62 Now spending about $11 Million per year .8%
1 PCI point loss in the overall network costs $15M to recover Project Selection Factors
Good streets require maintenance and preservation projects that will extend pavement life and prolong the need for costly rehabilitation. Failed streets require full reconstruction and should be paired with Sewer & Water projects to make better use of paving dollars. Other factors include geography, roadway classification, PCI, and future projects.
13 FUTURE PROJECTS
(MAKING BETTER USE OF PAVING DOLLARS)
14 2023 Slurry Streets
Calistoga Rd. Reconstruct
Fulton Rd. Widening
Fulton Road will be constructed using Cement Concrete which is far less expensive than conventional Asphalt and has a long design life of up to 60+ years. We are also looking at using similar Cement Concrete paving for Calistoga Road. These are both examples of how we can make better use of paving dollars to improve and extend the life of our roadways. The use of Concrete is a long-term strategy to reduce future network costs.
Future Pavement Preservation Projects include Slurry Seal “Downtown” and AR Cape Seal in “Roseland.”
Roseland AR Cape Seal
15 CONCERNS WITH CURRENT SPENDING
PCI
Year
43 46
49 52
55 58
61 64
67 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 20392040 2041 2042 2043 2044 2045 2046 2047 204820492050 2051 Cost to Recover PCI with Current Spending
Current PCI of 62
PCI Trend $11M/ Year
(Current Spending)
49 54
44 62 62
43 48
53 58
63 68
PCI VS. SPENDING
16 Current Spending, 11M Year
11M Year Plus Inflation
Maintain PCI of 62
15.5M Year Plus Inflation
44 PCI
51 PCI
62 PCI
$15.5M with inflation adjustment/ year to maintain current PCI of 62 for 30 years. $11M with inflation adjustment/ year = PCI of 51 in 30 years. $11M per year with no adjustments (current) = PCI of 44 in 30 years 17 Current Network Condition
Current
PCI = 62
18 30 Years
PCI = 44
30 YEAR PCI WITH CURRENT SPENDING
19 30 Years
PCI = 62
MAINTAIN CURRENT PCI OF 62
$15.5M/ YEAR + INFLATION ADJUSTMENT
REVIEW
Streets are a valuable asset for the City.
Funding pavement preservation projects now saves
money in the future.
Current spending will not maintain current PCI.
It is critical to optimize the use of construction materials based their impacts for long term performance.
20 RECOMMENDATION
It is recommended by the Transportation
and Public Works Department that Council
hold a study session for to provide a
presentation and information on the
current status of the City’s pavement
condition status.
21 QUESTIONS?
22