HomeMy WebLinkAbout; Bridge Preventive Maintenance Plan Final; Bridge Preventive Maintenance Plan Final; 2008-03-01City of Carlsbad
Bridge Preventive Maintenance Plan (BPMP)
Final Report
Prepared for:
City of Carlsbad
Public Works - Engineering
Prepared by:
TYLININTERNATIONAL
March 2008
City of Carlsbad
Bridge Preventive Maintenance
Plan (BPMP) Report
Prepared for:
City of Carlsbad
Prepared by:
TYLININTERNATIONAL
March 2008
City of Carlsbad
BPMP Report - March 2008
Table of Contents
1. Scope of the Report 1
2. Program Background and Purpose 1
3. Eligible Work 2
4. Ranking Procedure 3
Program Eligibility 4
Traffic Volume 4
Type of Work 4
Project Cost 5
Visual Appearance and Ride-ability 5
Public Safety 6
5. City of Carlsbad Bridge Inventory 6
6. Field Reviews 8
7. Cost Estimates 9
8. Summary and Conclusions 9
References 11
Appendix A - BPMP Listing
Appendix B - As-Built General Plans
Appendix C - Field Inspection Reports
Appendix D - Field Review Photos
Appendix E - Cost Estimates
Appendix F - Caltrans Local Agency Bridge List
Appendix G - Caltrans Inspection Reports
-TYLIIMINTERNATIONAL
City of Carlsbad
BPMP Report - March 2008
1. Scope of the Report
This report summarizes the work performed by T.Y. Lin International (TYLI) to
develop a Bridge Preventive Maintenance Plan (BPMP) for the City of Carlsbad. The
end product is a comprehensive listing of the City's bridges; which includes relevant
physical data, recommended preventive maintenance work, and a prioritized ranking.
The following work was conducted by TYLI from September 2007 to March 2008 to
support the development of the City's BPMP:
• Review current Caltrans inventory of City owned bridges.
• Identify additional City bridges not in Caltrans inventory.
• Obtain and review as-built plans and Caltrans inspection reports.
• Conduct field reviews and document with inspection reports and photos..
• Identify eligible preventive maintenance work.
• Prepare cost estimates for eligible preventive maintenance work.
• Collaborate with City to develop a ranking procedure.
• Complete comprehensive BPMP listing with prioritized ranking.
2. Program Background and Purpose
On April 18, 2006, Caltrans Division of Local Assistance issued a letter to local
agencies notifying them of the new Local Assistance Bridge Preventive Maintenance
Program. The purpose of the Program is to help local agencies extend the life of their
bridges by performing certain activities that have been pre-approved by the Federal
Highway Administration (FHWA).
The Bridge Preventive Maintenance Program is based on the provisions in the Federal
Highway Bridge Program (HBP). Specific program details are contained in the Caltrans
Local Assistance publication Bridge Preventive Maintenance Program Guidelines for Local
Agencies [1].
The BPMP guidelines list the following goals of the Program:
• Maintain the existing inventory of bridges in a structurally safe and serviceable
condition.
• Correct minor structural defects.
• Correct minor structural deficiencies early in a bridge's life, rather than wait until a
bridge has major problems requiring costly rehabilitation or replacement.
• Extend the service life of existing bridges.
• Make efficient use of limited resources.
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City of Carlsbad
BPMP Report - March 2008
The BPMP guidelines go on to state:
• Preservation of structural serviceability is a key element of the Program
• Preventive maintenance treatments include reducing the amount of water
infiltrating the bridge, protecting the bridge elements, slowing the rate of
deterioration, and the installation or repair of scour countermeasure
• Preventive maintenance activities should concentrate on treating bridges in fair to
good condition showing no more than minor structural distress
• Bridges that are currently programmed for rehabilitation or replacement generally
are not eligible for funding under the Program
3. Eligible & Ineligible Work
The BPMP guidelines provide lists of both ineligible and eligible items, which are
summarized below.
Ineligible Items:
1. Bridges less than 20 ft long.
2. Railing replacement to upgrade to crash tested standards.
3. Repair of crash damaged railing.
4. Graffiti removal.
5. Repair of signs and markers.
6. Clearing of brush.
7. Bearing lubrication.
8. Minor concrete repairs.
9. Shoring of bridges for load carrying capacity problems.
10. Cleaning deck drains.
11. Clearing debris.
12. Major painting efforts (Paint Condition Index, PCI, less than 65).
13. Painting for solely aesthetic reasons.
14. Seismic retrofit.
15. New scour countermeasures.
16. Work required to meet Storm Water Pollution Prevention Plan (SWPPP).
17. Repair or replacement of timber piles.
18. Full deck replacements.
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City of Carlsbad
BPMP Report - March 2008
Eligible Items:
1.
2.
3.
4.
5.
6.
9.
10.
11.
12.
13.
14.
15.
16.
17.
4.
Expansion joint replacement.
Methacrylate deck treatment.
Protective deck overlays, including removal of asphalt concrete (AC) and
unsound concrete.
Deck AC replacement or new installation to improve ride-ability.
Repair or replacement of bearings and bearing supports.
Repair, replacement and strengthening of major structural elements to restore
load carrying capacity, mitigate further fatigue damage, and increase fatigue
life.
Repair or replacement of timber structural elements, timber railings, and
timber deck runners.
Movable bridge mechanical/electrical component repair or replacement.
Retrofit repairs to fatigue prone details of steel girders.
Spot painting of structural steel elements, including bridge railing, where the
PCI is greater than 65.
Rehabilitation and new installation of deck drainage elements.
Replacement and upgrade of environmentally deteriorated bridge railing.
Embankment erosion control and repair of existing scour countermeasures
related to protecting the structural integrity of the bridge.
Approach slab rehabilitation, replacement and new installations that are
justified based on excessive maintenance repair history.
Other work that can be considered on a case-by-case basis: alkali-silica-reactive
aggregate mitigation, corrosion management systems, and fracture critical
element replacement and rehabilitation will be subject to Structures
Maintenance and Investigations (SMI) and Structures Local Assistance (SLA)
recommendations.
Development of Bridge Preventive Maintenance Plans (BPMP).
The Department, on a case-by-case basis, can review other scopes of work that
meet Preventive Maintenance objectives such as major painting projects,
seismic projects, and all new scour countermeasure projects.
Ranking Procedure
In order to comply with the BPMP guidelines, local agencies must develop an
objective procedure to prioritize their maintenance projects. A copy of the ranking
procedure must be kept in the City's project file for future audits. TYLI has
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City of Carlsbad
BPMP Report - March 2008
collaborated with the City to develop a ranking procedure. The procedure uses a five
point system and is based on six categories. Bridges that achieve the highest score are
placed at the top of the BPMP priority list. In addition to numerical rankings, each
category has been assigned a weighted score according to its level of significance to the
program. The table below shows the six categories and their weighted score:
Program
Eligibility
40
Traffic
Volume
10
Type of
Work
20
Project
Cost
10
Visual
Appearance
and Ride-
Ability
5
Public
Safety
15
The six categories are described below:
Program Eligibility
The Sufficiency Rating (SR) is used to give priority to bridges that are not eligible for
rehabilitation or replacement under the Highway Bridge Program. Bridges eligible for
rehabilitation or replacement are rated Structurally Deficient (SD) or Functionally
Obsolete (FO) and have a SR of 80 or less. Since the BPMP is intended for bridges
that are in generally good condition and not candidates for rehabilitation or
replacement, bridges with a higher sufficiency rating rank higher than bridges with a
lower sufficiency rating.
Sufficiency Rating (40points)
<40
0
40-44
1
4549
2
50-59
3
60-79
4
80-100
5
Traffic Volume
This criterion considers the relative importance of the bridge to the traveling public. In
order to do the most good with limited funding, preventive maintenance should be
concentrated on bridges with higher average daily trips (ADT).
Average Daily Trips (10 points)
0-5000
0
5001-10,000
1
10,001-
15,000
2
15,001-
20,000
3
20,001-
30,000
4
>30,001
5
Type of Work
This criterion considers the type of maintenance work required. The highest scoring
goes to bridges with items that are critical to the structural safety of the bridge or that
have a high potential to maximize the bridge's service life. High scores go to bridges
that require repair, restoration or strengthening of structural elements and to those that
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-TYLININTERNATIONAL
City of Carlsbad
BPMP Report - March 2008
require repair of existing scour counter-measures
since these items are the most critical in terms of
the structural safety of the bridge. The next highest
score goes to bridges that need items such as deck
treatment, since this type of work is important in
maximizing service life. Other high scores go to
replacement of environmentally deteriorated railing,
since, although this is not part of the bridges load
carrying system, deteriorated railing does present a
safety hazard.
Type of Work (20points)
No
Work
0
Minor
painting
concrete
patching
1
Repair of
exposed rebar,
approach slabs,
A/C overlays
2
Repair of
bearings, exp
joints and
deck drainage
3
Deck crack
treatment,
protective
overlays,
railings
4
Repair to major
structural elements or
exist scour
countermeasures
5
Project Cost
The point of this category is that it may be more prudent to use available funding to
complete several smaller, less expensive projects than to spend it all on a single
expensive project. Construction costs were estimated for each bridge and used to
determine the scoring for this category. Other project costs were estimated based on a
percentage of construction; 25% for preliminary engineering and 15% for construction
engineering.
Project Cost (10points)
> $100,001
0
$75,001 -
$100,000
1
$50,001-
$75,000
2
$25,001-
$50,000
3
$10,001-
$25,000
4
< $10,000
5
Visual Appearance and Ride-Ability
This category helps provide further ranking
among projects that do not involve repair of
structural elements and/or scour mitigation.
Projects are ranked by whether the deficiency
affects the public's perception and usage of the
bridge. For example, the deck on a bridge that is
in poor condition is not only noticeable visually,
but also affects the "ride-ability" of the bridge. A
joint seal that needs to be repaired is not visually
noticeable, nor does it have an affect on "ride-
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City of Carlsbad
BPMP Report - March 2008
ability". Therefore, under this criterion, the bridge requiring AC repair would rank
higher than a bridge requiring joint seal repair.
Visual Appearance and Ride-Ability (5points)
No effect
0
Minor visual
effect
\
Minor ride-
ability effect
2
Major visual
effect
3
Major ride-
ability effect
4
Major effects
ofboth
5
Public Safety
This category addresses the need to repair, replace,
or improve safety measures affecting the traveling
public. Public safety items include deteriorated and
unsafe railings, unprotected objects adjacent to the
traveled way and other conditions that may present
a potential hazard to the public. Scoring is based on
whether the hazard involved is considered minor,
moderate or major. For example, the hazard for a
bridge with an environmentally deteriorated and unsafe vehicular railing that carries a
busy street high above a steep canyon will be deemed as a major and given the highest
score.
Public Safety (15points)
None
0
Minor
1 -2
Moderate
3-4
Major
5
The total score for each bridge is determined by adding the weighted score for each
category. For example a bridge with a SR of 92 and ADT of 25,000 that needs a
methacrylate deck treatment at a cost of $45,000 plus the costs of preliminary
engineering, $11,250, and construction engineering, $6,750, would achieve a score of: 5
(40) + 4 (10) + 4 (20) + 2 (10) + 0 (5) + 2 (15) = 390 out of a possible 500.
The completed BPMP listing with rankings is provided in Appendix A.
5. City of Carlsbad Bridge Inventory
A total of 30 existing structures were identified within City of Carlsbad jurisdiction and
evaluated for preventive maintenance. Currently, these include 19 bridges that are on
the Caltrans Division of Structure Maintenance and Investigation (SM&I) Local
Agency Bridge List, plus an additional nine bridges and two drainage culverts that are
not listed. These additional structures are fairly new with completion dates ranging
from 1997 to 2007.
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City of Carlsbad
BPMP Report - March 2008
The two multi-cell box culverts that were included have lengths in excess of 20 ft as
defined in the FHWA Recording and Coding Guide [2]. The FHWA guide gives the
following definition of a bridge:
A. structure including supports erected over a depression or an obstruction, such as
water, highway, or railway, and having a track or passageway for carrying traffic
or other moving loads, and having an opening measured along the center of the
roadway of more than 20 feet between undercopings of abutments or spring lines of
arches, or extreme ends of openings for multiple boxes; it may also include
multiple pipes, where the clear distance between openings is less than half of the
smaller contiguous opening.
As such, the two drainage culverts qualify for the Program in accordance with the
BPMP guidelines.
Caltrans has recendy assigned bridge numbers to nine of the eleven structures not
currently on the Local Agency Bridge List. The Rancho Santa Fe Road Bridge over
San Marcos Creek, Bridge No. 57C-0278, constructed in 1978, was replaced in 2006.
The new left and right bridges were assigned the numbers 57C-0278L and 57C-0278R,
the same bridge number as the bridge that they replaced. Also, the drainage culvert at
Rancho Santa Fe Road, Bridge No. 57C-0283, was replaced with a longer culvert in
2004 when the road was widened, and it was also assigned the same bridge number as
the bridge it replaced.
Caltrans SM&I perform bi-annual inspections of all bridges on the Local Agency
Bridge List. As-built plans for the new structures have been sent to SM&I by the City
to initiate the process of adding the structures to the Local Agency Bridge List so that
they will be included in future inspection cycles.
The complete listing of the City of Carlsbad bridges by bridge number is provided
below.
Carlsbad Bridges (Caltrans Local Agency Bridge List)
•^^^^^^M
ID
1
2
3
4
5
6
7
8
9
10
11
12
••••^^^^•••••Mi^^^M
Bridge No.
57C-0133
57C-0134
57C-0135
57C-0176
57C-0177
57C-0178
57C-0179
57C-0190
57C-0191
57C-0212
57C-0214L
57C-0214R
•••••^^^^•••••^^^^^••^•^^^^
Facility Carried
Carlsbad Blvd
Carlsbad Blvd
Carlsbad Blvd
Palomar Airport Rd
El Camino Real
South Vista Way
Haymar Drive
El Camino Real
El Camino Real
Carlsbad Blvd
Carlsbad Blvd SB
Carlsbad Blvd NB
II^HMMHH^^^^HMM^B^^^^BMMHHiHM^^MHMMH
Bridge Name
Agua Hedionda Lagoon
Carlsbad Overhead (OH)
Buena Vista Lagoon
Palomar Airport Rd OH
Buena Vista Creek
Buena Vista Creek
Buena Vista Creek
San Marcos Creek
Agua Hedionda Creek
Ponto Drive UC
Las Encinas Creek
Las Encinas Creek
^^^^•••••^•^^^^^•MB
Year Built
1986
1925
1914
1965
1966
1966
1966
1971
1971
1952
1913
1951
Year
Wid/Ext
-
1935
1933
-
1979
-
-
-
2002 (1)
-
1928
.
Length
(«)
201
165
32
223
92
71
82
188
113
83
24
23
Page 7 of 13 -TYLININTERNATIONAL
City of Carlsbad
BPMP Report - March 2008
13
14
15
16
17
18
19
20
21
ID
A
B
C
D
E
F
G
H
I
J
K
57C-0215
57C-0238
57C-0278
57C-0283
57C-0307
57C-0429
57C-0598
57C-0667L
57C-0667R
Bridge No.
57C-0762
57C-0763R
57C-0763L
57C-0767
TBD
57C-0766
57C-0765
57C-0278L
57C-0278R
TBD
57C-0283
Palomar Airport Rd
Jefferson St
Rancho Santa Fe Re
Ranchc Santa Fe Rd
Carlsbad Blvd
La Costa Ave
Poinsettia Lane
West Carlsbad Blvd
East Carlsbad Blvd
Carlsbad Bridges
Facility Carried
Cannon Rd
Cannon Rd EB
Cannon Rd WB
Avenida Encinas
The Crossings Golf
Path
Pedestrian Path
Calle Barcelona
Rancho Santa Fe Rd
SB
Rancho Santa Fe Rd
NB
Rancho Santa Fe Rd
Rancho Santa Fe Rd
Las Encinas OC
Buena Vista Creek
San Marcos Creek
Encinitas Creek
Encina Discharge Channel
Encinitas Creek
Poinsettia Ln OH
San Marcos Creek
San Marcos Creek
1953
1973
1978
Un-known
1954
1967
1983
1995
1996
-
-
2006 (2)
2004 (3i
-
1987
2002
-
-
308
118
198
23
28
49
142
208
208
(to be added to Caltrans Bridge List)
Bridge Name
Agua Hedionda Channel
Macario Canyon
Macario Canyon
Avenida Encinas OH
College Blvd Golf Cart OC
Calle Barcelona POC
Encinitas Creek
San Marcos Creek
San Marcos Creek
Drainage Culvert 'B1
Drainage Culvert '1'
Year Built
2002
2002
2002
1997
2007
1999
1999
2006
2006
2004
2004
Year
Wid/Ext
-
-
-
-
-
-
-
(2)
(2)
-
(3)
Length
(ft)
134
455
455
145
199
116
112
368
368
31
29
Notes:
(1) Bridge No. 57C-0191 was widened in 2002; CT inspection report does not acknowledge this
(2) Bridge No. 57C-0278 was replaced in 2006 with NB & SB bridges, Bridge Nos. 57C-0278R/L
(3) Culvert No. 57C-0283 was replaced in 2004 when Rancho Santa Fe Road was widened
6. Field Reviews
Prior to conducting field reviews, the inspection reports for the 19 bridges that are
currently on the Local Agency Bridge List were reviewed. The most recent Caltrans
inspection reports are provided in Appendix F.
Field reviews were conducted from October 30th through December 4th. Each bridge
was inspected to evaluate the need for maintenance. A field inspection report was
completed and photographs were taken to document existing conditions. The field
inspection reports are provided in Appendix C. Field review photos are provided in
Appendix D.
Page 8 of 13
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City of Carlsbad
BPMP Report - March 2008
7. Cost Estimates
Project cost estimates were developed for all bridges that have recommended work
that is eligible for reimbursement through the Program. Costs were estimated by
breaking down the BPMP items into standard contract items, calculating quantities and
estimating unit prices for each item. Unit prices were derived from recent Caltrans
Contract Cost Data and bid results for similar local projects. Cost estimates for the
structures include, bridgework costs and estimated costs for; preliminary engineering
(25% of bridgework costs) and construction engineering (15% of bridgework costs).
8. Summary and Conclusions
The 30 structures (28 bridges and 2 box culverts) that are currently owned by the City
of Carlsbad were evaluated for potential preventive maintenance in accordance with
the Federal Bridge Preventive Maintenance Program. As-built plans and inspection
reports were reviewed and field reviews were conducted. A ranking procedure was
developed and documented as part of the City's Preventive Bridge Maintenance Plan.
The final result is a detailed BPMP listing that includes relevant physical data,
recommended preventive maintenance work, and a work prioritization ranking for
each bridge. BPMP eligible work was identified for 23 of the 30 structures. A
summary of this work is shown in the table below. The complete BPMP listing is
provided in Appendix A.
Summary of Prioritized BPMP Work
Priority
Rank
1
2
3
4
5
6
Bridge
No.
57C-0177
57C-0238
57C-0307
57C-0215
57C-0133
57C-0278L
Fatality
Carried
El Camino
Real
Jefferson
St
Carlsbad
Blvd
Palomar
Airport Rd
Carlsbad
Blvd
Rancho
Santa Fe
RdSB
Bridge
Name
Buena Vista
Creek
Buena Vista
Creek
Encina
Discharge
Channel
Las Encinas
OC
Agua
Hedionda
Lagoon
San Marcos
Creek
Recommended BPMP Work
Seal deck cracks with methacrylate. Erosion control at
west sidewalk, barrier spall rehab and repair exposed
rebar.
Seal deck cracks with methacrylate. Erosion control
(soil draining through future utility blockout, both ends),
AC has settled and is a hazard to pedestrians due to
utility blockout. Replace missing bridge railing.
Repair vertical cracking on both sides of pier 2, large
cracks and spalls at base of headwalls at east and west
sides.
Repair/rehabilitate bearing supports and columns.
Replace deteriorated bridge railing. Repair large
cracking of AC above EB/BB. Repair light curb
spelling, 4' piece of missing concrete at EOD and
cracking at the edge of soffit.
Repair abutment and shear key cracking, 3' crack at
northeast corner of soffit and ext girder. Seal
approach slab cracks with methacrylate.
Patch over exposed rebar in soffit at north span east
structure.
Page 9 of 13 -TYLININTERNATIONAL
City of Carlsbad
BPMP Report - March 2008
Summary of Prioritized BPMP Work
Priority
Rank
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Bridge
No.
57C-0766
57C-0134
57C-0598
57C-0762
57C-0763L
57C-0763R
57C-0190
57C-0212
57C-0214R
57C-0667R
57C-0135
57C-0176
57C-0765
57C-0667L
57C-0191
Facility
Carried
Pedestrian
Path
Carlsbad
Blvd
Poinsettia
Ln
Cannon Rd
Cannon Rd
WB
Cannon Rd
EB
El Camino
Real
Carlsbad
Blvd
Carlsbad
Blvd NB
East
Carlsbad
Blvd
Carlsbad
Blvd
Palomar
Airport Rd
Calle
Barcelona
West
Carlsbad
Blvd
El Camino
Real
Bridge
Name
Calle
Barcelona
POC
Carlsbad
OH
Poinsettia
LnOH
Agua
Hedionda
Creek
Macario
Canyon
Macario
Canyon
San Marcos
Creek
Ponto Drive
UC
Las Encinas
Creek
San Marcos
Creek
Buena Vista
Lagoon
Palomar
Airport Rd
OH
Encinitas
Creek
San Marcos
Creek
Agua
Hedionda
Creek
Recommended BPMP Work
Repair fence at 3 locations. Replace debonded joint
seals. Repair AC settlement at south approach and
concrete settlement at end of approach slab to the
north
AC Repair, Replacement/rehabilitation of deteriorated
bridge railing. Embankment erosion south span. Repair
3 concrete spalls.
Repair the 2 failed patches (1 meter each) at
abutments joints. Expansion joint seals will need partial
replacement in order to perform recommended repairs.
South bridge railing needs repair due to exposed rebar
at various locations with heavy corrosion.
Seal deck cracks with methacrylate.
Extend approach slabs due to fill settlement, repair
spalls at EB/BB.
Extend approach slabs due to fill settlement, repair
spalls at EB/BB.
Seal deck cracks with methacrylate. Repair spalling
and cracking exterior face of east barrier. Repair
spalling at BB/EB and spalling at southeast end of rail
Replace severely cracked barrier end posts, repair
spalling on pickets and top rail. Mitigate settlement
under abutment stem. Repair spalls on columns at
hoop locations and cracks at base and abut stem spall.
Methacrylate deck treatment and joint seal re
Repair soffit spalling at construction joints. Repair
debris wall on downstream side with major corrosion
and exposed rebar and spall at east side pier 2. Repair
damaged northeast wingwall and 2' crack on NW
headwall.
Methacrylate longitudinal cracks with rust seeping up to
deck.
Replace bridge barrier. Provide erosion control at
northeast corner adjacent to roadway.
Seal deck cracks with methacrylate. Repair bridge
railing, Add approach slab due to settlements issues.
Repair small spall at Soffit edge and BB/EB
Repair minor south sidewalk spall, small BB/EB spall.
Seal deck cracks with methacrylate, Repair light
spalling of bridge railing and longitudinal cracking seen
on the soffit of beams.
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City of Carlsbad
BPMP Report - March 2008
Priority
Rank
22
23
Bridge
No,
57C-0767
57C-0179
Sum
Facility
Carried
Avenida
Encinas
Haymar
Drive
maryofPrioi
Bridge
Name
Avenida
Encinas OH
(AT&SF
RR)
Buena Vista
Creek
•itized BPMP Work
Recommended BPMP Work
Repair spalling at EB/BB. Add approach slab to
mitigate AC settlement at the east side.
Barrier aesthetics (Painting to seal up very minor spider
cracks)
References
[1] California Department of Transportation, Bridge Preventive Maintenance Program Guidelines for
Local Agencies, Caltrans, Sacramento, 2006.
[2] U.S. Department of Transportation, Federal Highway Administration, Recording and Coding
Guide for Structure Inventory and Appraisal of the Nation's Bridges, Report No. FHWA-PD-96-
001, Washington D.C., 1995.
Page 11 of 13 -TYLININTERNATIONAL
City of Carlsbad
BPMP Report - March 2008
Appendix A - BPMP Listing
Appendix B - As-Built General Plans
Appendix C - Field Inspection Reports
Appendix D - Field Review Photos
Appendix E - Cost Estimates
Appendix F - Caltrans Local Agency Bridge List
Appendix G - Caltrans Inspection Reports
Page 13 of 13
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