HomeMy WebLinkAboutTrans 2014-10-13 Item 2B - Update - Annual Overlay and Repair Program / Pavement Maintenance Management ProgramTO:
City of Tukwila
Jim Haggerton, Mayor
INFORMATIONAL MEMORANDUM
Mayor Haggerton
Transportation Committee
FROM: Bob Giberson, Public Works Director
BY: David Sorensen, Project Manager
DATE: October 10, 2014
SUBJECT: Annual Overlay & Repair Program
Pavement Maintenance Management Program
Update Report
ISSUE
Present an update on the City's Pavement Maintenance Management Program. What funding level is
required to keep pace with the normal deterioration of roadway pavement?
BACKGROUND
Tukwila owns, operates, and maintains paved asphalt roadways, thus, making it necessary for Public
Works to monitor the condition of each roadway segment in the City. Tukwila uses a pavement
monitoring program called PMSPro developed by Pavement Engineers. The PMSPro program relies
upon regularly updated data for each street segment that describes the condition of the pavement in
terms of deterioration and distress signs such as cracking, rutting, surface wear, humps, bumps, and
sags. A map of rehabilitation strategies is shown on Exhibit 1 (Figure 10 of the Report). This
information is then used to prioritize maintenance activities, develop a rehabilitation schedule, and
plan multi -year budget strategies. Pavement Engineers has examined each street using visual
inspection and computerized data entry and measurement to provide an updated roadway condition
survey in 2014 for all of Tukwila's streets. The Pavement Condition Rating (PCR) for the entire city is
scored as shown on Exhibit 2 (Figure 11 of the Report). The higher the score, the better the condition
of the roadway. Portions of the draft report have been attached.
ANALYSIS
The overall condition of Tukwila's streets is good; however increased funding is needed to maintain
the Citywide Pavement Condition Rating at its current level or to improve it. At the current funding
level, the repair of city roadways has not kept pace with normal deterioration; i.e. deferred
maintenance is growing. Ideally Tukwila should be repairing its roadways at the same rate that they
deteriorate. Several questions need to be answered:
Question 1: What impact does the current funding level proposed in the 2015 -2016 Biennial Budget
have on the condition of the roadways? The current proposed budget provides an effective
construction budget of $2,300,000 for 2015 & 2016. This amount does not include contingencies, but
it does include construction costs for associated work such as curb ramps, traffic loops, and drainage
issues that do not extend pavement life. A modest annual escalation factor increases the proposed
budget in future years. Based on the current program report, this funding level does not keep pace
with expected pavement deterioration. The program analysis shows that approximately $1,300,000 is
needed annually (in paving costs alone) to keep pace with deterioration. Funding would need to be
increased to accomplish that level of new pavement in any one construction year.
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W:1PW EngIPROJECTSIA- RW & RS Projects\Annual Overlay & Repair Programs12015 Overlay & Repair Program \ Program Update for TCITC Info Memo 2014 PMS 10 -10 -14 - sb.docx
Response: The proposed budget will provide an average effective construction budget of
$1,150,000 per year. The roadways will deteriorate faster than they can be repaired and the
backlog of deferred maintenance (number of roadway sections needing repair) will continue to
grow.
Question 2: What annual funding level would be needed to maintain a non - deteriorating pavement
condition rating?
Response: The City would need an overlay construction budget of approximately $1,500,000
(not including a contingency).
RECOMMENDATION
Provide annual funding levels to match the rate of roadway deterioration in order to maintain a
consistent pavement condition rating. Updates on the Pavement Maintenance Management Program
should be presented to the Transportation Committee every 2 years to monitor progress and
appropriate funding levels.
Attachments: Page 18, Proposed 2015 CIP
Exhibit 1 Map of Rehabilitation Strategies
Exhibit 2 Map of Current Pavement Condition Ratings
Exhibits 3 6 Budget Comparison Charts
W:1PW Eng\PROJECTSIA- RW & RS ProjectslAnnual Overlay & Repair Programs12015 Overlay & Repair Program\Program Update for TC1TC Info Memo 2014 PMS 10- 10 -14- sb.docx
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CITY OF TUKWILA CAPITAL PROJECT SUMMARY
2015 to 2020
PROJECT: Annual Overlay and Repair Program Project No. 91310401
DESCRIPTION: Select, design and construct asphalt and concrete pavement overlays of arterial and residential streets.
JUSTIFICATION: Preserve and maintain the street structure in a safe and useable state by resurfacing before failure which also
minimizes costs. Some individual sites may be coordinated with water, sewer, and surface water projects.
STATUS: Each year various sections of roadway throughout the City are designed and constructed for asphalt overlay.
MAINT. IMPACT: Reduces annual maintenance.
COMMENT: Ongoing project. Only one year actuals shown in first column.
FINANCIAL Through Estimated
in $000's
2013 2014 2015
2016
2017
2018
2019
2020
BEYOND TOTAL
EXPENSES
Design
48
100
125
125
150
150
175
175
175
1,223
Land(R/W)
0
Const. Mgmt.
175
175
175
200
200
225
225
230
1,605
Construction
1,125
1,250
1,260
1,300
1,320
1,325
1,330
1,340
10,250
TOTAL EXPENSES
48
1,400
1,550
1,560
1,650
1,670
1,725
1,730
1,745
13,078
FUND SOURCES
Awarded Grant
0
Proposed Grant
0
Mitigation Actual
0
Mitigation Expected
0
City Oper. Revenue
48
1,400
1,550
1,560
1,650
1,670
1,725
1,730
1,745
13,078
TOTAL SOURCES
48
1,400
1,550
1,560
1,650
1,670
1,725
1,730
1,745
13,078
Project Location
2015 - 2020 Capital Improvement Program
18
45
46
Pavement Engineers, Inc.
EXHIBIT
City of Tukwila
4.q
"i
Rehabilitation
FILL CRACKS
PATCH
SLURRY SEAL
TN OVLY
TK OVLY /LOCAL
TK OVLY /ART
RECONST /LOCAL
RECONST /ART
)g•»1
—V
cePPIANt
r»
EXHIBIT ,
City of Tukwila
PCR Values
masterMap.PE_PCR
< 20 Failed
20 - 39 Very Poor
40 - 59 Poor
60 - 79 Fair
80 - 100 Good /Excellent
Pavement Engineers, Inc.
12
10
Budget
$1,000,000/Year Budget
$, Millions
EXHIBIT 3
Spent — Deferred
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Year
Figure 5a. Budget vs Deferred Maintance
100
80
60
40
20
0
Health of Street Network
$1,000,000/Year Budget
% Area
PCR Range
M< 20 1E20 -39 EJ40 -59 X60 -70 11180 -100
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Year
Figure 5b.
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EXHIBIT 4
12
10
8
6
4
2
0
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Year
Figure 6a. Budget vs Deferred Maintance
Budget
$1,300,000/Year Budget
$, Millions
100
80
60
40
20
0
Health of Street Network
$1,300,000/Year Budget
% Area
PCR Range
1:1
•< 20 ®20 -39 040 -59 X60 -70 X80 -100
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Year
Figure 6b.
50
EXHIBIT 5
12 $, Millions
10
8
6
4
2
0
2014 2015 2016 2017 2018 2019 2020 2021
Budget
$1,500,000/Year Budget
Year
Figure 7a. Budget vs Deferred Maintance
100
80
60
40
20
0
2022 2023 2024
Health of Street Network
$1,500,000/Year Budget
% Area
PCR Range
•< 20 020 -39 040 -59 M60 -70 X80 -100
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Year
Figure 7b.
51
XHIBIT L
Accumlated Budget + Deferred Maintance
100
80
60
40
20
0
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Year
$, Millions
°Total ($lmil) —Total ($1.3mil) —Total ($1.5m11)
Figure 8.
100
80
60
40
20
0
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Average PCR
■$1 mil/Year No$1.3 mil/Year d$1.5 mil/Year
Figure 9.
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