Bridge Scour Evaluation - Plan of Action

Bridge Scour Evaluation - Plan of Action

BRIDGE SCOUR EVALUATION - PLAN OF ACTION
Br. No.
37C0011 / Owner
CITY OF CUPERTINO / Location
0.2 MI E/O STEVENS CYN RD / Facility Carried
STEVENS CR BLVD / Name
STEVENS CREEK
Plan of Action
Completed By: /

Date of Completion:

1. SCOUR VULNERABILITY RATING
Scour Evaluation Summary:
Scour History:
a. Foundation Type Spread footing Pile Extension Footing on Piles Unknown
b. Foundation Material Known ______Unknown
Scour Review: Done By: Date:
Structural Assessment: Done By: Date:
Critical Elevation: ______
Geotechnical Assessment: Done By: Date:
Critical Elevation: ______
2. NBIS CODING INFORMATION
Most Recent
Inspection date / 5/17/04
Item 113 Scour / 3
Item 60 Substructure / 7
Item 61 Channel & Channel Protection / 6
Item 71 Waterway Adequacy / 4
3. COUNTERMEASURE RECOMMENDATION
A.  Completed Countermeasures:
B.  Proposed Countermeasures:
Countermeasures Not Required. (Please explain)
Install Scour Countermeasures (See 4 and 5) Estimated Cost
Riprap with monitoring program $
Guide bank $
Spurs / Bendway weirs / Barbs $
Relief bridge / Culvert $
Channel improvements $
Monitoring $
Monitoring device $
Check Dam $
Substructure Modification $
Bridge replacement $
Other ______$
Close Bridge (See 6)
4. COUNTERMEASURE IMPLEMENTATION SCHEDULE
Countermeasure Implementation Project Type:
Proposed Construction Project
Lead Agency
Maintenance Project
Advertised Date:
Other scheduling information:
5. MONITORING PLAN
Monitoring Plan Summary:
Monitoring Authority:
Regular Inspection Program of ______mo. w/surveyed cross sections
Items to Watch: undermining the footing
Increased Inspection Interval of ______mo. w/surveyed cross sections
Items to Watch:.
Underwater Inspection Program Frequency ______mo.
Items to Watch:
Fixed Monitoring Device
Type of Instrument:
Installation location(s):
Sample Interval: 30 min. 1 hr. 6 hrs. 12 hrs.
Other ______
Frequency of data logger downloading: Weekly Bi-weekly Monthly
Other ______
Scour-critical discharge: ______
Action required if scour-critical elevation detected:
Other Monitoring Program
Type: Visual
Instrument
Portable Geophysical Sonar
Other gages
Flood monitoring required: Yes No
Flood monitoring event defined by:
Discharge over ______
Stage ______
Elev. measured from ______
Frequency of flood monitoring: 1 hr. 3 hr. 6 hrs. Other
Scour critical elevation:
Action required if scour-critical elevation detected:
6. BRIDGE CLOSURE PLAN
Bridge ADT: 8000 / Built: 1922 / % Trucks: 2 / Bridge Length (ft): 55.1

Closure Plan Summary

Scour Monitoring Criteria for Consideration of Bridge Closure:
Water surface elevation reaches Overtopping road or structure
Scour Measurement Results / Monitoring Device Loss of Riprap
Observed amount of Settlement Loss of Road Embankment
Debris Accumulation
Other
Person / Area Responsible for Closure:
Contact People (Name & Phone No.):
Responsible for re-opening after inspection:
7. DETOUR ROUTE
Detour route description (route number, from - to, etc.) – attach map.
Average ADT: / Year: / % Trucks: / Length:
Bridges on Detour Route:
Bridge Number / Waterway / Sufficiency Rating/
Load limitations / Scour 113 code

Bridge Scour Plan of Action Page 1

BRIDGE SCOUR EVALUATION - PLAN OF ACTION
Br. No.
37C0056 / Owner
CITY OF SAN JOSE / Location
0.5 MI W ALMADAN AVE / Facility Carried
W ALMA AVE / Name
GUADALUPE RIVER
Plan of Action
Completed By: /

Date of Completion:

1. SCOUR VULNERABILITY RATING
Scour Evaluation Summary:
Scour History:
a. Foundation Type Spread footing Pile Extension Footing on Piles Unknown
b. Foundation Material Known ______Unknown
Scour Review: Done By: Date:
Structural Assessment: Done By: Date:
Critical Elevation: ______
Geotechnical Assessment: Done By: Date:
Critical Elevation: ______
2. NBIS CODING INFORMATION
Most Recent
Inspection date / 8/9/05
Item 113 Scour / 2
Item 60 Substructure / 5
Item 61 Channel & Channel Protection / 3
Item 71 Waterway Adequacy / 5
3. COUNTERMEASURE RECOMMENDATION
C.  Completed Countermeasures:
D.  Proposed Countermeasures:
Countermeasures Not Required. (Please explain)
Install Scour Countermeasures (See 4 and 5) Estimated Cost
Riprap with monitoring program $
Guide bank $
Spurs / Bendway weirs / Barbs $
Relief bridge / Culvert $
Channel improvements $
Monitoring $
Monitoring device $
Check Dam $
Substructure Modification $
Bridge replacement $
Other ______$
Close Bridge (See 6)
4. COUNTERMEASURE IMPLEMENTATION SCHEDULE
Countermeasure Implementation Project Type:
Proposed Construction Project
Lead Agency
Maintenance Project
Advertised Date:
Other scheduling information:
5. MONITORING PLAN
Monitoring Plan Summary:
Monitoring Authority:
Regular Inspection Program of ______mo. w/surveyed cross sections
Items to Watch: undermining the footing
Increased Inspection Interval of ______mo. w/surveyed cross sections
Items to Watch:.
Underwater Inspection Program Frequency ______mo.
Items to Watch:
Fixed Monitoring Device
Type of Instrument:
Installation location(s):
Sample Interval: 30 min. 1 hr. 6 hrs. 12 hrs.
Other ______
Frequency of data logger downloading: Weekly Bi-weekly Monthly
Other ______
Scour-critical discharge: ______
Action required if scour-critical elevation detected:
Other Monitoring Program
Type: Visual
Instrument
Portable Geophysical Sonar
Other gages
Flood monitoring required: Yes No
Flood monitoring event defined by:
Discharge over ______
Stage ______
Elev. measured from ______
Frequency of flood monitoring: 1 hr. 3 hr. 6 hrs. Other
Scour critical elevation:
Action required if scour-critical elevation detected:
6. BRIDGE CLOSURE PLAN
Bridge ADT: 21700 / Built: 1954 / % Trucks: 4 / Bridge Length (ft): 103.0

Closure Plan Summary

Scour Monitoring Criteria for Consideration of Bridge Closure:
Water surface elevation reaches Overtopping road or structure
Scour Measurement Results / Monitoring Device Loss of Riprap
Observed amount of Settlement Loss of Road Embankment
Debris Accumulation
Other
Person / Area Responsible for Closure:
Contact People (Name & Phone No.):
Responsible for re-opening after inspection:
7. DETOUR ROUTE
Detour route description (route number, from - to, etc.) – attach map.
Average ADT: / Year: / % Trucks: / Length:
Bridges on Detour Route:
Bridge Number / Waterway / Sufficiency Rating/
Load limitations / Scour 113 code

Bridge Scour Plan of Action Page 1

Bridge Scour Plan of Action Page 1

BRIDGE SCOUR EVALUATION - PLAN OF ACTION
Br. No.
37C0093 / Owner
Santa Clara County / Location
0.7 MI N/O WATSONVILLE RD / Facility Carried
UVAS RD / Name
UVAS CREEK
Plan of Action
Completed By: /

Date of Completion:

1. SCOUR VULNERABILITY RATING
Scour Evaluation Summary:
Scour History:
a. Foundation Type Spread footing Pile Extension Footing on Piles Unknown
b. Foundation Material Known ______Unknown
Scour Review: Done By: Date:
Structural Assessment: Done By: Date:
Critical Elevation: ______
Geotechnical Assessment: Done By: Date:
Critical Elevation: ______
2. NBIS CODING INFORMATION
Most Recent
Inspection date / 12/15/04
Item 113 Scour / 3
Item 60 Substructure / 6
Item 61 Channel & Channel Protection / 5
Item 71 Waterway Adequacy / 5
3. COUNTERMEASURE RECOMMENDATION
E.  Completed Countermeasures:
F.  Proposed Countermeasures:
Countermeasures Not Required. (Please explain)
Install Scour Countermeasures (See 4 and 5) Estimated Cost
Riprap with monitoring program $
Guide bank $
Spurs / Bendway weirs / Barbs $
Relief bridge / Culvert $
Channel improvements $
Monitoring $
Monitoring device $
Check Dam $
Substructure Modification $
Bridge replacement $
Other ______$
Close Bridge (See 6)
4. COUNTERMEASURE IMPLEMENTATION SCHEDULE
Countermeasure Implementation Project Type:
Proposed Construction Project
Lead Agency
Maintenance Project
Advertised Date:
Other scheduling information:
5. MONITORING PLAN
Monitoring Plan Summary:
Monitoring Authority:
Regular Inspection Program of ______mo. w/surveyed cross sections
Items to Watch: undermining the footing
Increased Inspection Interval of ______mo. w/surveyed cross sections
Items to Watch:.
Underwater Inspection Program Frequency ______mo.
Items to Watch:
Fixed Monitoring Device
Type of Instrument:
Installation location(s):
Sample Interval: 30 min. 1 hr. 6 hrs. 12 hrs.
Other ______
Frequency of data logger downloading: Weekly Bi-weekly Monthly
Other ______
Scour-critical discharge: ______
Action required if scour-critical elevation detected:
Other Monitoring Program
Type: Visual
Instrument
Portable Geophysical Sonar
Other gages
Flood monitoring required: Yes No
Flood monitoring event defined by:
Discharge over ______
Stage ______
Elev. measured from ______
Frequency of flood monitoring: 1 hr. 3 hr. 6 hrs. Other
Scour critical elevation:
Action required if scour-critical elevation detected:
6. BRIDGE CLOSURE PLAN
Bridge ADT: 1640 / Built: 1923 / % Trucks: 5 / Bridge Length (ft): 211.0

Closure Plan Summary

Scour Monitoring Criteria for Consideration of Bridge Closure:
Water surface elevation reaches Overtopping road or structure
Scour Measurement Results / Monitoring Device Loss of Riprap
Observed amount of Settlement Loss of Road Embankment
Debris Accumulation
Other
Person / Area Responsible for Closure:
Contact People (Name & Phone No.):
Responsible for re-opening after inspection:
7. DETOUR ROUTE
Detour route description (route number, from - to, etc.) – attach map.
Average ADT: / Year: / % Trucks: / Length:
Bridges on Detour Route:
Bridge Number / Waterway / Sufficiency Rating/
Load limitations / Scour 113 code

Bridge Scour Plan of Action Page 1

Bridge Scour Plan of Action Page 1

BRIDGE SCOUR EVALUATION - PLAN OF ACTION
Br. No.
37C0103 / Owner
Santa Clara County / Location
BOLSA RD / Facility Carried
BLOOMFIELD ROAD / Name
CARNADERO CREEK
Plan of Action
Completed By: /

Date of Completion:

1. SCOUR VULNERABILITY RATING
Scour Evaluation Summary:
Scour History:
a. Foundation Type Spread footing Pile Extension Footing on Piles Unknown
b. Foundation Material Known ______Unknown
Scour Review: Done By: Date:
Structural Assessment: Done By: Date:
Critical Elevation: ______
Geotechnical Assessment: Done By: Date:
Critical Elevation: ______
2. NBIS CODING INFORMATION
Most Recent
Inspection date / 11/15/04
Item 113 Scour / 3
Item 60 Substructure / 6
Item 61 Channel & Channel Protection / 5
Item 71 Waterway Adequacy / 7
3. COUNTERMEASURE RECOMMENDATION
G.  Completed Countermeasures:
H.  Proposed Countermeasures:
Countermeasures Not Required. (Please explain)
Install Scour Countermeasures (See 4 and 5) Estimated Cost
Riprap with monitoring program $
Guide bank $
Spurs / Bendway weirs / Barbs $
Relief bridge / Culvert $
Channel improvements $
Monitoring $
Monitoring device $
Check Dam $
Substructure Modification $
Bridge replacement $
Other ______$
Close Bridge (See 6)
4. COUNTERMEASURE IMPLEMENTATION SCHEDULE
Countermeasure Implementation Project Type:
Proposed Construction Project
Lead Agency
Maintenance Project
Advertised Date:
Other scheduling information:
5. MONITORING PLAN
Monitoring Plan Summary:
Monitoring Authority:
Regular Inspection Program of ______mo. w/surveyed cross sections
Items to Watch: undermining the footing
Increased Inspection Interval of ______mo. w/surveyed cross sections
Items to Watch:.
Underwater Inspection Program Frequency ______mo.
Items to Watch:
Fixed Monitoring Device
Type of Instrument:
Installation location(s):
Sample Interval: 30 min. 1 hr. 6 hrs. 12 hrs.
Other ______
Frequency of data logger downloading: Weekly Bi-weekly Monthly
Other ______
Scour-critical discharge: ______
Action required if scour-critical elevation detected:
Other Monitoring Program
Type: Visual
Instrument
Portable Geophysical Sonar
Other gages
Flood monitoring required: Yes No
Flood monitoring event defined by:
Discharge over ______
Stage ______
Elev. measured from ______
Frequency of flood monitoring: 1 hr. 3 hr. 6 hrs. Other
Scour critical elevation:
Action required if scour-critical elevation detected:
6. BRIDGE CLOSURE PLAN
Bridge ADT: 1440 / Built: 1930 / % Trucks: 10 / Bridge Length (ft): 82.0

Closure Plan Summary

Scour Monitoring Criteria for Consideration of Bridge Closure:
Water surface elevation reaches Overtopping road or structure
Scour Measurement Results / Monitoring Device Loss of Riprap
Observed amount of Settlement Loss of Road Embankment
Debris Accumulation
Other
Person / Area Responsible for Closure:
Contact People (Name & Phone No.):
Responsible for re-opening after inspection:
7. DETOUR ROUTE
Detour route description (route number, from - to, etc.) – attach map.
Average ADT: / Year: / % Trucks: / Length:
Bridges on Detour Route:
Bridge Number / Waterway / Sufficiency Rating/
Load limitations / Scour 113 code

Bridge Scour Plan of Action Page 1

Bridge Scour Plan of Action Page 1

BRIDGE SCOUR EVALUATION - PLAN OF ACTION
Br. No.
37C0159 / Owner
Santa Clara County / Location
0.8 MI S OF ALMADEN / Facility Carried
ALAMITOS RD / Name
ALAMITOS CREEK
Plan of Action
Completed By: /

Date of Completion:

1. SCOUR VULNERABILITY RATING
Scour Evaluation Summary:
Scour History:
a. Foundation Type Spread footing Pile Extension Footing on Piles Unknown
b. Foundation Material Known ______Unknown
Scour Review: Done By: Date:
Structural Assessment: Done By: Date:
Critical Elevation: ______
Geotechnical Assessment: Done By: Date:
Critical Elevation: ______
2. NBIS CODING INFORMATION
Most Recent
Inspection date / 3/23/04
Item 113 Scour / 3
Item 60 Substructure / 6
Item 61 Channel & Channel Protection / 5
Item 71 Waterway Adequacy / 7
3. COUNTERMEASURE RECOMMENDATION
I.  Completed Countermeasures:
J.  Proposed Countermeasures:
Countermeasures Not Required. (Please explain)
Install Scour Countermeasures (See 4 and 5) Estimated Cost
Riprap with monitoring program $
Guide bank $
Spurs / Bendway weirs / Barbs $
Relief bridge / Culvert $
Channel improvements $
Monitoring $
Monitoring device $
Check Dam $
Substructure Modification $
Bridge replacement $
Other ______$
Close Bridge (See 6)
4. COUNTERMEASURE IMPLEMENTATION SCHEDULE
Countermeasure Implementation Project Type:
Proposed Construction Project
Lead Agency
Maintenance Project
Advertised Date:
Other scheduling information:
5. MONITORING PLAN
Monitoring Plan Summary:
Monitoring Authority:
Regular Inspection Program of ______mo. w/surveyed cross sections
Items to Watch: undermining the footing
Increased Inspection Interval of ______mo. w/surveyed cross sections
Items to Watch:.
Underwater Inspection Program Frequency ______mo.
Items to Watch:
Fixed Monitoring Device
Type of Instrument:
Installation location(s):
Sample Interval: 30 min. 1 hr. 6 hrs. 12 hrs.
Other ______
Frequency of data logger downloading: Weekly Bi-weekly Monthly
Other ______
Scour-critical discharge: ______
Action required if scour-critical elevation detected:
Other Monitoring Program
Type: Visual
Instrument
Portable Geophysical Sonar
Other gages
Flood monitoring required: Yes No
Flood monitoring event defined by:
Discharge over ______
Stage ______
Elev. measured from ______
Frequency of flood monitoring: 1 hr. 3 hr. 6 hrs. Other
Scour critical elevation:
Action required if scour-critical elevation detected:
6. BRIDGE CLOSURE PLAN
Bridge ADT: 334 / Built: 1935 / % Trucks: 5 / Bridge Length (ft): 151.9

Closure Plan Summary

Scour Monitoring Criteria for Consideration of Bridge Closure:
Water surface elevation reaches Overtopping road or structure
Scour Measurement Results / Monitoring Device Loss of Riprap
Observed amount of Settlement Loss of Road Embankment
Debris Accumulation
Other
Person / Area Responsible for Closure:
Contact People (Name & Phone No.):
Responsible for re-opening after inspection:
7. DETOUR ROUTE
Detour route description (route number, from - to, etc.) – attach map.
Average ADT: / Year: / % Trucks: / Length:
Bridges on Detour Route:
Bridge Number / Waterway / Sufficiency Rating/
Load limitations / Scour 113 code

Bridge Scour Plan of Action Page 1

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