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Home My WebLink About24 - Park Avenue Bridge Replacement - PowerPoint (Staff)City Council Meeting Adoption of a Mitigated Negative Declaration November 25, 2014 Project Vicinity i V El MARWEAVB i -LI WA all k ; - I AIM v Existing Park Avenue Bridge Public Works Department Community Development Department Project Background &Benefits • Vitally important bridge as the only access to /from Little Balboa Island • Originally built in 1930 and rehabilitated numerous times • Full replacement necessary due to advanced deterioration of structurally critical elements and is functionally obsolete • Benefits include: • Improved traffic and pedestrian access and safety • Improved columns boat access under the bridge structure with fewer • 100% Federally Funded Public Works Department New Bridge Structure • Replaces existing 85 -year old bridge • Widens both traffic lanes from 10 -ft to 11 -ft • Widen both sidewalks from 4 -ft to 6 -ft • Reconstruct ADA- compliant pedestrian ramps • Pedestrian Stairs at all four corners • Reduce the number of bridge piles in Grand Canal • Maintain architectural character of existing bridge Public Works Department OP uG TPo �ATEND( A Ir rorti. �orx or wwaE uoN� f a rua AV E. � � ao PAR NG MEP.2 REK9 (DmNG) Public Works Department m'4 K m'4 K m+1.NR•.s..i• /iw. CwU,.96 —C.]V R.O.r i /tl.. ® A. 0� -Y.Ai O•�O.6iR•It.ti tP. imo rm •� PROFREGRADE iKO >•n mw Iwn w wm¢ rYVm uwe i..n.m¢ - Im'4 .ul un I �i�l ui IRro%n ELEVATIO f B aP.R.KJ CC I I r [ 1B1I�� I I LEGEND F PLAJN- R�ml x II I t P T .M CRY OF NEWPORT BEACH PARK AVENUE BWGE MUCEIMIT PRELIMINARY ffMER LL PUN NOT FOR CONSTRUCTION �,� Temporary Bridge at Balboa Avenue Reasons supporting this as the best construction approach: • Two -lanes of traffic provided through construction phase; minimize traffic related impacts • Unimpeded emergency response access • Reduces the overall construction time; minimize construction impacts in environmentally sensitive Grand Canal • Avoid higher risks associated with staged construction approach • Confined work area maintaining vehicle /pedestrian access • Structural viability of 85 -year old bridge through partial removal Public Works Department b a 71 P- I► o LEGEND: = Balboa Avenue Temp Bridge Park Avenue Bridge Park Avenue Bridge Replacement Over Grand Canal Project PROPOSED CONSTRUCTION ROUTES 47' 10 90' 10• 47• RAMP 2 -LANE TRUSS BRIDGE ABUTMENT STEEL PILE SUPPORT � BOARDWALK SEAWALL BEARINGBLOCK ® Balboa Avenue Tem Public Works Department CITY OF NEWPORT BEACH Mitigated Negative Declaration (MND) CEQA Compliance • Initial Study /Mitigated Negative Declaration prepared by RBF consulting • No significant environmental impacts • Mitigation measures required related to Aesthetics, Air Quality, Biological & Cultural Resources, Geology /Soils, Hazards /Hazardous Materials, & Noise • IS /MND supported by detailed air quality, noise, historical, hazardous materials, water quality, hydraulics and traffic technical studies • All impacts associated with the project were determined to be mitigated to below a level of significance Public Works Department Community Development Department Mitigated Negative Declaration (MND) CEQA Compliance • Public comment period: October 6, 2014 through November 5, 2014 • Six comment letters received (RWQCB, OC Public Works, California Cultural Resources Preservation Alliance, and adjacent home /business owners) • City prepared written Responses to Comments; no comments affecting or altering conclusions within the IS /MND were raised Public Works Department Community Development Department Project Funding &Schedule • Highway Bridge Replacement & Replacement Program (Federal Funds) • Total Project Funding: $4,414,000 • Schedule: • Approve Environmental Document — November 2014 • Obtain Coastal Commission Permit Approval —Spring 2015 • Complete Final Design /Bidding — Summer 2015 • Construction — Fall /Winter 2015 to December 2016 Public Works Department Questions and Comments ;��J� ■IIIIIIII , r�rrrrr�rrr�i MEtµ tNl ON �ATEW CONLI:Frt W,LLL \ nlErmaW& L A _ meuLUwn�aaenee �LOwfa r�nLra[.�ia -o� Edo MV' DS'4 LJ�rANCRE�E FAPMO - MUi1 GgIFIFB HFR2 -I 1 NF/OJI MRS w A 4 EE 4. MOH FFl Kl \ NEWD WALL Public Works Department A Well - Engineered Machine J- mi