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INFORMATION HANDOUT for Hardin Flat Road Bridge

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INFORMATION HANDOUT for Hardin Flat Road Bridge INFORMATION HANDOUT For Hardin Flat Road Bridge Replacement Project Contract No. 1673 Federal Aid No. BRLO-5932(079) PLACS PLAC Summary PERMITS U.S. Department of Agriculture Forest Service Temporary Special – Use Permit AGREEMENTS California Department of Fish and Wildlife Notification No. 1600-2016-0114-R4 MATERIALS INFORMATION Final Foundation Report Hardin Flat Road Bridge (Replace) over South Fork Tuolumne River Bridge No. 32C-0053 - February 2017 MISCELLANEOUS INFORMATION Natural Environment Study Hardin Flat Road Bridge (32C0053) over the South Fork Tuolumne River Replacement Project - August 2015 Hardin Flat Road Bridge Replacement Project Contract No. 1673 PLACS PLAC Summary PLAC CONDITION RESPONSIBILTY (PCR) SUMMARY General: This PCR Summary clarifies the various PLAC requirements. Perform all work described in the PLACs on behalf of the County unless otherwise stated below in Table 2. If a discrepancy exists between the PCR Summary and the PLAC, the PCR Summary governs. Definitions: Agency: A board, agency, or other entity that issues a PLAC Activity: A task, event or other project element PLAC Condition: A work activity and/or submittal required by a PLAC Table 1 – Clarification of PLAC Requirements PLAC Name Section of the PLAC PLAC Requirement Submittals: Submit to the Engineer when PLAC conditions require: 1. Communications. The Engineer will contact the agencies. All PLACs Applicable PLAC Sections 2. Records to be maintained, within 5 working days after the activity. 3. Submittals 5 days before the agencies require them. The Engineer will review and submit to the agencies. Table 2 – Work to be performed by the County PLAC Name Section of the PLAC PLAC Requirement Measure 2.3(a), (b), Listed and Other Special The County to provide surveys. Status Species California Department of Fish and Wildlife Measure 2.4(b), (c) Fish and Wildlife The County to provide surveys. Notification No. 1600-2016-0114-R4 Measure 2.5(b) Vegetation The County to provide replanting Measure 3.1(a) Revegetation and Restoration The County to provide plan and replanting The County to provide reports related to Measure 3.2 Reports Measure 2.3(a), (b), and Measure 2.4(b), (c). Hardin Flat Road Bridge Replacement Project Contract No. 1673 Hardin Flat Road Bridge Replacement Project Contract No. 1673 PERMITS U.S. Department of Agriculture Forest Service Temporary Special – Use Permit Hardin Flat Road Bridge Replacement Project Contract No. 1673 AGREEMENTS California Department of Fish and Wildlife Notification No. 1600-2016-0114-R4 Hardin Flat Road Bridge Replacement Project Contract No. 1673 MATERIALS INFORMATION Final Foundation Report Hardin Flat Road Bridge (Replace) over South Fork Tuolumne River FINAL FOUNDATION REPORT Hardin Flat Road Bridge (Replace) over South Fork Tuolumne River Bridge No. 32C-0053 Tuolumne County, California Prepared by: BLACKBURN CONSULTING 2491 Boatman Avenue West Sacramento, CA 95691 (916) 375-8706 February 2017 Prepared for: Tuolumne County Community Resources Agency 2 South Green Street Sonora, California 95370 West Sacramento Office: 2491 Boatman Ave. West Sacramento, CA 95691 Main Auburn Office: (530) 887-1494 (916) 375-8706 . Fax (916) 375-8709 Fresno Office: (559) 438-8411 Geotechnical . Geo-Environmental . Construction Services . Forensics File No. 2721.X February 17, 2017 Ms. Blossom Scott-Heim, P.E. Tuolumne County Community Resources Agency 2 South Green Street Sonora, California 95370 Subject: FINAL FOUNDATION REPORT Hardin Flat Road Bridge (Replace) over S. Fork Tuolumne River Bridge No. 32C-0053 Tuolumne County, California Dear Ms. Scott-Heim: Blackburn Consulting (BCI) prepared this Final Foundation Report for the Hardin Flat Road Bridge (Replace) Project over the South Fork Tuolumne River in Tuolumne County, California. BCI prepared this report in accordance with our July 14, 2014 Agreement and November 14, 2016 Amendment No. 1 with Tuolumne County for the project. This report contains our findings, conclusions and geotechnical recommendations for design of the new bridge, bridge wing walls and associated roadway improvements. Please call if you have questions or require additional information. Sincerely, BLACKBURN CONSULTING Reviewed by, David J. Morrell, P.E., G.E. Patrick Fischer, P.G., C.E.G., C.E. Senior Project Manager Senior Project Manager Distribution: Tuolumne County Community Resource Agency (3) – Attention: Ms. Blossom Scott-Heim, P.E. Cornerstone Structural Engineering Group, Inc. (1) – Attention: Mr. Bobby Zermeno, P.E. FINAL FOUNDATION REPORT Hardin Flat Road Bridge (Replace) over S. Fork Tuolumne River Bridge No. 32C-0053 Tuolumne County, California TABLE OF CONTENTS 1. INTRODUCTION......................................................................................................................1 1.1 Purpose ...................................................................................................................................1 1.2 Scope of Services ...................................................................................................................1 2. SITE LOCATION AND DESCRIPTION ...............................................................................2 3. PROJECT DESCRIPTION ......................................................................................................2 4. SUBSURFACE EXPLORATION ............................................................................................2 5. SITE GEOLOGY AND SUBSURFACE CONDITIONS .......................................................3 5.1 Geologic Setting ....................................................................................................................3 5.2 Local Geology and 1:1 Cut Slope Field Geologic Review ....................................................3 5.3 Subsurface Conditions ...........................................................................................................3 5.4 Groundwater ..........................................................................................................................4 6. LABORATORY TESTING ......................................................................................................4 7. CORROSION EVALUATION .................................................................................................5 8. SCOUR CONSIDERATIONS ..................................................................................................5 9. SEISMIC DATA AND EVALUATION...................................................................................5 9.1 Ground Motion Study ............................................................................................................5 9.2 Liquefaction Evaluation .........................................................................................................6 9.3 Fault Rupture Study ...............................................................................................................6 9.4 Seismic Settlement .................................................................................................................6 9.5 Seismic Slope Stability ..........................................................................................................7 10. FOUNDATION RECOMMENDATIONS ............................................................................7 10.1 Abutment Foundation Design Data and Loading ................................................................7 10.2 Pile Data Table .....................................................................................................................8 10.3 Abutment 48-inch CIDH Pile Analysis ...............................................................................8 10.3.1 Compressive Resistance ............................................................................................... 8 10.3.2 Lateral Resistance ........................................................................................................ 8 10.3.3 Settlement .................................................................................................................... 9 10.3.4 Negative Skin Friction ................................................................................................. 9 10.4 Lateral Earth Pressures ........................................................................................................9 11. APPROACH FILL EARTHWORK ....................................................................................10 11.1 Fill Material .......................................................................................................................10 11.2 Slope Geometry and Stability ............................................................................................11 11.3 Settlement ..........................................................................................................................11 12. NEW HMA APPROACH PAVEMENT SECTIONS ........................................................11 13. CONSTRUCTION CONSIDERATIONS ...........................................................................11 i FINAL FOUNDATION REPORT Hardin Flat Road Bridge (Replace) over S. Fork Tuolumne River Bridge No. 32C-0053 Tuolumne County, California TABLE OF CONTENTS (continued) 13.1 Earthwork ...........................................................................................................................11 13.2 Excavations and Dewatering .............................................................................................12 13.3 CIDH Piles
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