Bridge Preservation Program
Bridge Preservation Program
Steve Takigawa California Department of Transportation Western Bridge Preservation Partnership Meeting May 2013
1
State Bridge Inventory 12,924 Bridges
2,500
2,000 1,500
223 million square feet Median Age of 41 years
1,000 500
Structure Types Age in Years
95 +
80
70
60
50
40
30
20
10
0
0
Number of Bridges
3,000
89% Concrete 7% Steel 4% Timber
2
Changing Safety Standards
Caltrans Bridge Preservation Process Inspection Findings
Seismic Analysis Operational Improvements
Scour Analysis
All Bridge Needs
Caltrans Crew Work (Minor repair work and bridge painting)
Crew work is tracked by date of recommendation. A priority for the repair is determined by the engineer. Performance measures are used to monitor program (BLOS)
Major Maintenance (Major repairs and preventative maintenance)
SHOPP (Rehab, replacement, safety and risk mitigation)
Needs are tracked by date of recommendation
Needs split out into components based on the type of need.
Needs are minor or preventative in nature Priority for the repair is determined by engineers Performance measures are used to monitor program
Priorities are based on structural needs, economic analysis and risks using utility functions. Full project management in place. 3
Bridge Maintenance Contract Funding and Backlog
3000
2961
3,000
2,000 $94
$94
$94
$80
$94
Bridge Maintenance Program 2001 - 2005
1,500
$9
$6
$20
$6
1,000
500
$13
$40
$63
$63
$60
$-
0 01/02
02/03
03/04
04/05
05/06
Funding $
06/07 07/08 08/09 Fiscal Year
09/10
10/11
11/12
12/13
13/14
Backlog Bridges
4
# of Bridges
2922
2883
2844
2544
2320
2095
3,500
2,500
$94
$100
1645
$120
1870
$140
$6
Funding Level (Million $)
$160
3039
Projected
Actual
$94
$180
3117
4,000
3078
$200
Bridge Maintenance Contract Funding and Backlog 4,000
2991
2952
2913
2874
2647
2507
2320
3,500
3,000
2007 & 2009 Five
# of Bridges
2,500
$94
$94
$94
$94
$80
$94
2,000
$94
1870
$100
1645
$120
2095
1,500
$40
$6
$6
$6
$9
$20
01/02
02/03
03/04
04/05
$63
$63
$60
1,000
500
$13
Funding Level (Million $)
$140
2544
$160
2835
Actual
$180
3030
$200
$-
0 05/06
Funding $
06/07
07/08 08/09 Fiscal Year Backlog Bridges
09/10
10/11
11/12
12/13
13/14
Reduce Backlog
5
2005 -2012 Bridge Preservation Programs
8,623 Bridges Current - 69% Goal – 85%
Maintenance Program
300 Bridges/Yr
2,544 Bridges Current - 20% Goal 10%
40 Bridges/Yr
Preservation Program (Major Maintenance)
10,215 Bridges Current - 79% Goal – 85%
Maintenance Program
510 Bridges/Yr
2,069 Bridges Current - 16% Goal 10%
Rehab. Program (SHOPP)
22 Bridges/Yr
Preservation Program (Major Maintenance)
1,333 Bridges Current - 11% Goal – 5%
640 Bridges Current - 5% Goal – 5%
Rehab. Program (SHOPP)
6
Cabrillo Bridge Preservation
A Living Example of Preservation 7
Coronado Bay Bridge
Managed Lanes to Maximize Service Capacity of the Bridge 8
Pine Valley Creek Bridge
Built to Accommodate Future Demands
9
Summary
Three pronged approach to bridge preservation (crews, maintenance/preservation and capital contracts) Inflow of preservation needs are increasing but new rehab needs are decreasing. Priorities of crew and preservation work is set by inspector as a timeframe for completion of work. Capital rehabilitation and replacements compete in a multi-objective utility cost benefit framework. Future functional considerations are being built into some bridges in California. Simple performance measures help decision makers understand bridge preservation needs. 10
Steve Takigawa California Department of Transportation Western Bridge Preservation Partnership Meeting May 2013
1
State Bridge Inventory 12,924 Bridges
2,500
2,000 1,500
223 million square feet Median Age of 41 years
1,000 500
Structure Types Age in Years
95 +
80
70
60
50
40
30
20
10
0
0
Number of Bridges
3,000
89% Concrete 7% Steel 4% Timber
2
Changing Safety Standards
Caltrans Bridge Preservation Process Inspection Findings
Seismic Analysis Operational Improvements
Scour Analysis
All Bridge Needs
Caltrans Crew Work (Minor repair work and bridge painting)
Crew work is tracked by date of recommendation. A priority for the repair is determined by the engineer. Performance measures are used to monitor program (BLOS)
Major Maintenance (Major repairs and preventative maintenance)
SHOPP (Rehab, replacement, safety and risk mitigation)
Needs are tracked by date of recommendation
Needs split out into components based on the type of need.
Needs are minor or preventative in nature Priority for the repair is determined by engineers Performance measures are used to monitor program
Priorities are based on structural needs, economic analysis and risks using utility functions. Full project management in place. 3
Bridge Maintenance Contract Funding and Backlog
3000
2961
3,000
2,000 $94
$94
$94
$80
$94
Bridge Maintenance Program 2001 - 2005
1,500
$9
$6
$20
$6
1,000
500
$13
$40
$63
$63
$60
$-
0 01/02
02/03
03/04
04/05
05/06
Funding $
06/07 07/08 08/09 Fiscal Year
09/10
10/11
11/12
12/13
13/14
Backlog Bridges
4
# of Bridges
2922
2883
2844
2544
2320
2095
3,500
2,500
$94
$100
1645
$120
1870
$140
$6
Funding Level (Million $)
$160
3039
Projected
Actual
$94
$180
3117
4,000
3078
$200
Bridge Maintenance Contract Funding and Backlog 4,000
2991
2952
2913
2874
2647
2507
2320
3,500
3,000
2007 & 2009 Five
# of Bridges
2,500
$94
$94
$94
$94
$80
$94
2,000
$94
1870
$100
1645
$120
2095
1,500
$40
$6
$6
$6
$9
$20
01/02
02/03
03/04
04/05
$63
$63
$60
1,000
500
$13
Funding Level (Million $)
$140
2544
$160
2835
Actual
$180
3030
$200
$-
0 05/06
Funding $
06/07
07/08 08/09 Fiscal Year Backlog Bridges
09/10
10/11
11/12
12/13
13/14
Reduce Backlog
5
2005 -2012 Bridge Preservation Programs
8,623 Bridges Current - 69% Goal – 85%
Maintenance Program
300 Bridges/Yr
2,544 Bridges Current - 20% Goal 10%
40 Bridges/Yr
Preservation Program (Major Maintenance)
10,215 Bridges Current - 79% Goal – 85%
Maintenance Program
510 Bridges/Yr
2,069 Bridges Current - 16% Goal 10%
Rehab. Program (SHOPP)
22 Bridges/Yr
Preservation Program (Major Maintenance)
1,333 Bridges Current - 11% Goal – 5%
640 Bridges Current - 5% Goal – 5%
Rehab. Program (SHOPP)
6
Cabrillo Bridge Preservation
A Living Example of Preservation 7
Coronado Bay Bridge
Managed Lanes to Maximize Service Capacity of the Bridge 8
Pine Valley Creek Bridge
Built to Accommodate Future Demands
9
Summary
Three pronged approach to bridge preservation (crews, maintenance/preservation and capital contracts) Inflow of preservation needs are increasing but new rehab needs are decreasing. Priorities of crew and preservation work is set by inspector as a timeframe for completion of work. Capital rehabilitation and replacements compete in a multi-objective utility cost benefit framework. Future functional considerations are being built into some bridges in California. Simple performance measures help decision makers understand bridge preservation needs. 10
