<p> BRIDGE SCOUR EVALUATION - PLAN OF ACTION Br. No. Owner Location Facility Carried Name 53C0589 Los Angeles 0.1 MI W/O VALYERMO RD BIG ROCK CREEK County BOBS GAP RD</p><p>Plan of Action Date of Completed By: Completion:</p><p>1. SCOUR VULNERABILITY RATING </p><p>Scour Evaluation Summary:</p><p>Scour History:</p><p> a. Foundation Type Spread footing Pile Extension Footing on Piles Unknown b. Foundation Material Known ______Unknown Scour Review: Done By: Date: </p><p>Structural Assessment:Done By: Date:  Critical Elevation: ______Geotechnical Assessment: Done By: Date: Critical Elevation: ______</p><p>2. NBIS CODING INFORMATION Most Recent Inspection date 5/11/04 Item 113 Scour 3 Item 60 Substructure 7 Item 61 Channel & Channel Protection 4 Item 71 Waterway Adequacy 5 3. COUNTERMEASURE RECOMMENDATION A. Completed Countermeasures: </p><p>B. Proposed Countermeasures: </p><p>Countermeasures Not Required. (Please explain)</p><p>Install Scour Countermeasures (See 4 and 5) Estimated Cost Riprap with monitoring program $ Guide bank</p><p>$ Spurs / Bendway weirs / Barbs $ Relief bridge / Culvert $ Channel improvements $ Monitoring</p><p>$ Monitoring device $ Check Dam $ Substructure Modification $ Bridge replacement $ Other ______$ </p><p>Close Bridge (See 6)</p><p>4. COUNTERMEASURE IMPLEMENTATION SCHEDULE Countermeasure Implementation Project Type: Proposed Construction Project Lead Agency Maintenance Project</p><p>Advertised Date: </p><p>Other scheduling information: 5. MONITORING PLAN Monitoring Plan Summary:</p><p>Monitoring Authority:</p><p>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</p><p>Other ______Scour-critical discharge: ______Action required if scour-critical elevation detected:</p><p>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</p><p>Bridge ADT: 1500 Built: 1927 % Trucks: 1 Bridge Length (ft): 161.1 Closure Plan Summary</p><p>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: </p><p>Contact People (Name & Phone No.): </p><p>Responsible for re-opening after inspection: </p><p>7. DETOUR ROUTE Detour route description (route number, from - to, etc.) – attach map.</p><p>Average ADT: Year: % Trucks: Length: Bridges on Detour Route: Bridge Number Waterway Sufficiency Rating/ Load limitations Scour 113 code BRIDGE SCOUR EVALUATION - PLAN OF ACTION Br. No. Owner Location Facility Carried Name 53C0620 Los Angeles 4 MI S MALIBU CYN RD MALIBU CREEK County VENTURA FWY</p><p>Plan of Action Date of Completed By: Completion:</p><p>1. SCOUR VULNERABILITY RATING </p><p>Scour Evaluation Summary:</p><p>Scour History:</p><p> a. Foundation Type Spread footing Pile Extension Footing on Piles Unknown b. Foundation Material Known ______Unknown Scour Review: Done By: Date: </p><p>Structural Assessment:Done By: Date:  Critical Elevation: ______Geotechnical Assessment: Done By: Date: Critical Elevation: ______</p><p>2. NBIS CODING INFORMATION Most Recent Inspection date 3/10/03 Item 113 Scour 3 Item 60 Substructure 7 Item 61 Channel & Channel Protection 7 Item 71 Waterway Adequacy 7 3. COUNTERMEASURE RECOMMENDATION C. Completed Countermeasures: </p><p>D. Proposed Countermeasures: </p><p>Countermeasures Not Required. (Please explain)</p><p>Install Scour Countermeasures (See 4 and 5) Estimated Cost Riprap with monitoring program $ Guide bank</p><p>$ Spurs / Bendway weirs / Barbs $ Relief bridge / Culvert $ Channel improvements $ Monitoring</p><p>$ Monitoring device $ Check Dam $ Substructure Modification $ Bridge replacement $ Other ______$ </p><p>Close Bridge (See 6)</p><p>4. COUNTERMEASURE IMPLEMENTATION SCHEDULE Countermeasure Implementation Project Type: Proposed Construction Project Lead Agency Maintenance Project</p><p>Advertised Date: </p><p>Other scheduling information: 5. MONITORING PLAN Monitoring Plan Summary:</p><p>Monitoring Authority:</p><p>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</p><p>Other ______Scour-critical discharge: ______Action required if scour-critical elevation detected:</p><p>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</p><p>Bridge ADT: 19578 Built: 1953 % Trucks: 2 Bridge Length (ft): 216.9 Closure Plan Summary</p><p>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: </p><p>Contact People (Name & Phone No.): </p><p>Responsible for re-opening after inspection: </p><p>7. DETOUR ROUTE Detour route description (route number, from - to, etc.) – attach map.</p><p>Average ADT: Year: % Trucks: Length: Bridges on Detour Route: Bridge Number Waterway Sufficiency Rating/ Load limitations Scour 113 code BRIDGE SCOUR EVALUATION - PLAN OF ACTION Br. No. Owner Location Facility Carried Name 53C0828 CITY OF 1.5 MI S LINDERO TRIUNFO CANYON WESTLAKE VENTURA FWY CANYON ROA CREEK VILLAGE</p><p>Plan of Action Date of Completed By: Completion:</p><p>1. SCOUR VULNERABILITY RATING </p><p>Scour Evaluation Summary:</p><p>Scour History:</p><p> a. Foundation Type Spread footing Pile Extension Footing on Piles Unknown b. Foundation Material Known ______Unknown Scour Review: Done By: Date: </p><p>Structural Assessment:Done By: Date:  Critical Elevation: ______Geotechnical Assessment: Done By: Date: Critical Elevation: ______</p><p>2. NBIS CODING INFORMATION Most Recent Inspection date 7/22/04 Item 113 Scour 2 Item 60 Substructure 7 Item 61 Channel & Channel Protection 7 Item 71 Waterway Adequacy 8 3. COUNTERMEASURE RECOMMENDATION E. Completed Countermeasures: </p><p>F. Proposed Countermeasures: </p><p>Countermeasures Not Required. (Please explain)</p><p>Install Scour Countermeasures (See 4 and 5) Estimated Cost Riprap with monitoring program $ Guide bank</p><p>$ Spurs / Bendway weirs / Barbs $ Relief bridge / Culvert $ Channel improvements $ Monitoring</p><p>$ Monitoring device $ Check Dam $ Substructure Modification $ Bridge replacement $ Other ______$ </p><p>Close Bridge (See 6)</p><p>4. COUNTERMEASURE IMPLEMENTATION SCHEDULE Countermeasure Implementation Project Type: Proposed Construction Project Lead Agency Maintenance Project</p><p>Advertised Date: </p><p>Other scheduling information: 5. MONITORING PLAN Monitoring Plan Summary:</p><p>Monitoring Authority:</p><p>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</p><p>Other ______Scour-critical discharge: ______Action required if scour-critical elevation detected:</p><p>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</p><p>Bridge ADT: 8700 Built: 1970 % Trucks: 2 Bridge Length (ft): 186.0 Closure Plan Summary</p><p>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: </p><p>Contact People (Name & Phone No.): </p><p>Responsible for re-opening after inspection: </p><p>7. DETOUR ROUTE Detour route description (route number, from - to, etc.) – attach map.</p><p>Average ADT: Year: % Trucks: Length: Bridges on Detour Route: Bridge Number Waterway Sufficiency Rating/ Load limitations Scour 113 code BRIDGE SCOUR EVALUATION - PLAN OF ACTION Br. No. Owner Location Facility Carried Name 53C1004 Los Angeles 0.25 MI S OF CRAGS DRIVE TRIFUNO CREEK County MULHOLLAND W</p><p>Plan of Action Date of Completed By: Completion:</p><p>1. SCOUR VULNERABILITY RATING </p><p>Scour Evaluation Summary:</p><p>Scour History:</p><p> a. Foundation Type Spread footing Pile Extension Footing on Piles Unknown b. Foundation Material Known ______Unknown Scour Review: Done By: Date: </p><p>Structural Assessment:Done By: Date:  Critical Elevation: ______Geotechnical Assessment: Done By: Date: Critical Elevation: ______</p><p>2. NBIS CODING INFORMATION Most Recent Inspection date 12/3/01 Item 113 Scour 3 Item 60 Substructure 7 Item 61 Channel & Channel Protection 6 Item 71 Waterway Adequacy 8 3. COUNTERMEASURE RECOMMENDATION G. Completed Countermeasures: </p><p>H. Proposed Countermeasures: </p><p>Countermeasures Not Required. (Please explain)</p><p>Install Scour Countermeasures (See 4 and 5) Estimated Cost Riprap with monitoring program $ Guide bank</p><p>$ Spurs / Bendway weirs / Barbs $ Relief bridge / Culvert $ Channel improvements $ Monitoring</p><p>$ Monitoring device $ Check Dam $ Substructure Modification $ Bridge replacement $ Other ______$ </p><p>Close Bridge (See 6)</p><p>4. COUNTERMEASURE IMPLEMENTATION SCHEDULE Countermeasure Implementation Project Type: Proposed Construction Project Lead Agency Maintenance Project</p><p>Advertised Date: </p><p>Other scheduling information: 5. MONITORING PLAN Monitoring Plan Summary:</p><p>Monitoring Authority:</p><p>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</p><p>Other ______Scour-critical discharge: ______Action required if scour-critical elevation detected:</p><p>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</p><p>Bridge ADT: 1000 Built: 1951 % Trucks: 1 Bridge Length (ft): 164.1 Closure Plan Summary</p><p>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: </p><p>Contact People (Name & Phone No.): </p><p>Responsible for re-opening after inspection: </p><p>7. DETOUR ROUTE Detour route description (route number, from - to, etc.) – attach map.</p><p>Average ADT: Year: % Trucks: Length: Bridges on Detour Route: Bridge Number Waterway Sufficiency Rating/ Load limitations Scour 113 code</p>