07-16-2019 State of the StreetsPowerPoint Presentation
State of the Streets
Public Works Department
Streets – Infrastructure to Achieve Visions and Goals
City of Federal Way Comprehensive Plan – Transportation
Goal 1: Maintain mobility through a safe, balanced, and integrated transportation system.
Goal 2: Be fiscally and environmentally sustainable.
Goal 3: Enhance community health, livability, and transportation by providing a connected system of pedestrian, bicycle, and transit ways that are integrated into a coordinated regional
network.
Goal 4: Support the City’s land use vision and plan.
Goal 5: Develop and implement transportation systems management strategies and programs that contribute to the overall effectiveness of the multimodal transportation system.
Goal 6: Be an active partner by coordinating with a broad range of groups to help meet Federal Way’s transportation goals.
Good Pavement vs. Poor Pavement
Tacoma Weekly’s – “Pothole Piggy”
Safe, efficient mobility vs. Rough roads and dodging potholes
Low cost O&M vs. High cost O&M
Positive city image – economic vitality vs. Poor image – economically depressed
Pavement Infrastructure City’s Largest Asset
238 centerline miles
545 lane miles
$260,000,000 to replace all the City’s street pavement
City’s streets are rated on a bi-annual basis
Current overall Pavement Condition Index (PCI) rating is 75 (2017 = 77)
Functional Classifications
Pavement Rating and Pavement Funding History
2007 to 2018 Annual Budget vs. PCI
Year
Annual Budget
Dollar Per Ton
Lane Miles Overlaid
PCI
2007*
$2,039,000
$62.35
13.17
86
2008*
$2,024,000
$67.06
12.94
83
2009*
$2,025,000
$67.20
10.01
79
2010*
$1,900,000
$63.00
11.15
78
2011*
$1,513,500
$60.76
13.68
79#
2012*
$1,573,000
$67.16
10.71
79#
2013**
$1,484,000
$65.75
8.85
77#
2014
$1,484,000
$71.17
6.86
77#
2015**
$1,515,000
$70.00
8.78
78#
2016
$1,515,000
$61.75
7.31
78#
2017**
$1,515,000
$75.00
5.35
77#
2018
$1,517,000
$73.00
3.98
77#
*Annual pavement ratings # $500,000/year overlay budget reduction
**Bi-annual pavement ratings
PCI Projections per Annual Pavement Expenditures
Pavement Condition Index (PCI)
PCI vs Pavement Deterioration and Life Cycle Costs
Cost of Rehabilitation Type vs PCI
Summary
Pavement is vital to the City’s safety, mobility, and economic health.
Pavement is the City’s largest piece of infrastructure.
The overall PCI has dropped over 10 points in the past 10 years due to lack of funding.
The overall PCI will drop another 10 points in the next 10 years if funding is not increased.
The lower the PCI, the higher the costs to maintain.
Questions?
Street infrastructure is vital to the health of the city.
A whole section of the comprehensive plan is dedicated to Transportation – of which the pavements are the foundation.
I have highlighted a few key words of what pavement infrastructure provides.
Mobility, safe transportation, sustainability, health, livability, and support of land use / economic development.
In more simple terms – what does good pavement vs. poor pavement mean.
Poor image example from Tacoma and their infamous failing street infrastructure. The local paper, Tacoma Weekly, enlisted help from the “Pothole Piggy” to draw attention to the plight
of Tacoma’s neglected streets an encourage local government to fix the problem.
Every two years, the city visually inspects and rates every lane-mile of pavement.
Each section of pavement gets a Pavement Condition Index (PCI) rating from 0 to 100 (0 being complete gravel to 100 being perfect). Pavement defects subtract from the perfect 100 rating.
Defects include cracks, patches, and potholes.
Since 2007, the City’s overall PCI has dropped from 86 to 77.
This graph shows the drop in PCI. This also shows the reduction in annual lane miles overlaid.
In 2007 we overlaid over 13 lane miles of roadway. In 2018, just under 4 lane miles.
This table demonstrates the drop in PCI over the past 10 years.
In 2012, the annual overlay budget was reduced by $500,000 per year (and has never been increased since).
Cost of construction has also increased including cost per ton of asphalt as well as the cost for replacement of curb ramps as required by law.
In the last few years, pavement rehabilitation has been limited to our arterial system (with no overlays being completed on residential roads).
This is strictly a risk management strategy where we need to focus funds on where they can do the greatest good.
Arterials have higher speeds and higher traffic volumes. And it is much more costly to replace a failed arterial pavement than a failed residential pavement.
If we continue with the same level of funding ($1.5M annually), we will drop another 10 points in pavement condition in 10 years.
It will require $3.0 M per year to maintain an overall system PCI of 77.
Pavement maintenance is like car, equipment, and house maintenance.
You can choose to do preventative maintenance, and pay a little early on – or neglect preventative maintenance, let it fail and pay a lot more later.
You can get oil changes regularly – and pay $40 each time – or not do oil changes, and by a new engine.
This curve shows the PCI of pavement over it’s life cycle.
Preventative maintenance when the pavement is rated “good” (in the 80s) is less expensive. (do like a chip seal or thin overlay)
Pavement rehabilitation of a structural overlay occurs around 55-65 – costs a lot more.