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HomeMy WebLinkAboutStaff Report 3.C 12/01/2008CITY OF PETALUMA, CALIFORNIA AGENDA BILL Agenda Title: Resolution Authorizing Staff to Apply for the Federal Highway Bridge Program Grant for the Seismic Vulnerability Evaluation of the Washington Street Bridge. MOO December 1, 2008 Meeting Date: December 1. 2008 Meeting Time: ❑ 3:00 PM 0 7:00 PrvI Category: ❑ Presentation © Consent Calendar ❑ Public Hearing ❑ Unfinished Business ❑ New Business Department: Director: Public Works TindeMarengo f 1/f, Cost of Proposal: $68,000 Approximate City Matching Fund: Approximate Highway Bridge Program Grant Amount Budgeted: $0 Contact Person: Larry Zimmer, P.E. A C $13,600 $54,400 Phone Number: 776-3674 Name of Fund: Highway Bridge Program Grant Gax Tax Account Number: To Be Determined (Typically a project number is created after grant is awarded) Recommendation: It is recommended that the City Council take the following action: Staff recommends the City Council authorize application for grant funds from the HBP Grant Program. Summary Statement: The Highway Bridge Program (HBP) is a federal safety program that provides federal aid to local agencies to rehabilitate locally -owned public highway bridges. The Washington Street Bridge may be vulnerable to catastrophic failure in a seismic event and is expected to qualify for this grant. City Staff would prepare the grant application following authorization by the City Council. Attachments to Agenda Packet Item: 1. Resolution 2. Project Location Map 3. Memo to John Brown regarding Gas Tax Expenditure Budget Reviewed by Admin. Svcs. Dir: Reviewed by City Attornev: Anpr6 ecF itv Manager: ( ( I an �e 1/ lAo1 Date: Date: Rev. #4 Ddte Last Revi$Cd: pile. Si Grant• -h nudiu;; hulAerl[HP II6:;Iruiy Isi id„o i§ n;!r:nn1+ t 11/24/08 *9anl nthn rvuc run spplird tioa tot IIIc lt;nh :A i,l v;ri"Ifli. dnvu;L il, CITY OF PETALUMA, CALIFORNIA DECEMBER 1, 2008 AGENDA REPORT FOR RESOLUTION AUTHORIZING STAFF TO APPLY FOR THE FEDERAL HIGHWAY BRIDGE PROGRAM GRANT FOR THE SEISMIC VULNERABILITY EVALUATION OF THE WASHINGTON STREET BRIDGE 1. RECOMMENDATION: Staff recommends the City Council authorize application for grant funds from the HBP. 2. BACKGROUND: The City Council recently accepted the Washington Street Bridge Column Repair Project, which placed casings on the existing columns to eliminate further deterioration which was evident by existing cracking. As part of this project, scuba divers needed to clear the mud/settlement around the columns at the river bed. At that time, the divers reported that the bottom of the columns appeared to neck down (reduction of diameter), which may be a sign of scour (wearing down of concrete from abrasives in the water), or a result of the original concrete placement. Due to the lack of visibility underwater, and since this was out of the scope of the original project, staff was unable to quantify the concrete loss or the extent of exposed rebar. The project design consultant (URS Corporation) did not believe the column necking was a problem. However, staff decided to investigate further and called a bridge design consultant (TRC) for a cursory review. After a brief review of the as -built drawings, TRC identified some deficiencies in the original design (not related to column necking), which may make the bridge susceptible to a catastrophic failure from a seismic event. This bridge was designed prior to the San Fernando earthquake in 1971, which resulted in a significant change in how bridges are designed in California. The bi-annual bridge inspections performed by Caltrans do not look into the structural adequacy of the bridge from a design perspective, but strictly the current condition. Therefore, an inadequately designed bridge that is in good shape would receive a high sufficiency rating. Staff contacted Caltrans and they agreed the bridge, built in 1970, might potentially be vulnerable, and suggested the City apply for HBP funds to perform a detailed seismic evaluation/analysis. If the analysis recommends seismic retrofit, staff will go back to the Council for authorization to apply for further HBP funding for design and construction of the seismic retrofit work. The detailed seismic analysis by TRC is estimated to cost $68,000. The HBP grant would provide 80% funding and the City is required to provide a 20% match. S'\Grants-Funding folder\I-IBP (I lighway Bridge ProgramyCC authorizing grant application for the Wash St Bridge seismic vulnerability evaluatmri.DOC 3. DISCUSSION: Alternatives: 1. Authorize application for HBP fiords. This will result in an investigation which will provide staff with sufficient knowledge to determine the bridge's vulnerability. 2. Do not apply for the grant at this time. Staff will not be able to access the risk of bridge failure in the event of a seismic event. 4. FINANCIAL IMPACTS: The seismic vulnerability analysis by TRC would cost approximately $68,000. Should the HBP grant application be successful, Federal Highway Administration (FH -WA) would provide 80% finding and the City would be required to provide a 20% local match, or approximately $13,600 from the Gas Tax Fund, which has an available balance (see Attachment #3). Caltrans allows the match to be any State or local funds. This is appropriate use of Gas Tax Funds. Reimbursement should be received within three to four months of expenditure. Staff will prepare the grant application. S:\Grants-Funding Folder\HBP (I Iighway Bridge Program)\CC authorizing grant application for the Wash St Bridge seismic vulnerability evaluation. DOC 3 ATTACHMENT 1 RESOLUTION OF THE CITY COUNCIL OF PETALUMA AUTHORIZING STAFF TO APPLY FOR THE FEDERAL HIGHWAY BRIDGE PROGRAM GRANT FOR THE SEISMIC VULNERABILITY EVALUATION OF THE WASHINGTON STREET BRIDGE WHEREAS, the Highway Bridge Program (HBP) is a Federal safety program that provides federal -aid to local agencies to rehabilitate locally -owned public highway bridges; and WHEREAS, the California State Department of Transportation (Caltrans) has been delegated the responsibility for the administration of the program within the State; and WHEREAS, staff believes that a detailed seismic evaluation of the Washington Street Bridge will provide the City with data to better assess vulnerability of the bridge to failure during a seismic event; and WHEREAS, City staff recommends that a seismic vulnerability evaluation/analysis be performed to determine whether a seismic retrofit is required. NOW, THEREFORE, BE IT RESOLVED that the Petaluma City Council hereby: Approves filing of an application for the Highway Bridge Program (HBP) grant for seismic analysis of the Washington Street Bridge. 2. Authorizes the City Manager to sign the grant application, to be submitted to Caltrans for consideration. S'\Grants-Funding Polder\I IBP (Highway Bridge Program)\CC authorizing grant application for the Wash Sl Bridge seismic vulnerability evaluation. DOC 4 \t , ?sk , vir 11 II 04 ;4� WASHINGTON STREET LOCATION MAP SCALE: MJ.S. S:\Brants-Funding Polder\I lIlP (1 hghwav Bridge Program)\CC authorizing grant application for the Wash St Bridge seismic vulnerability evaluation.00C 5 nrLIA WASHINGTON STREET LOCATION MAP SCALE: MJ.S. S:\Brants-Funding Polder\I lIlP (1 hghwav Bridge Program)\CC authorizing grant application for the Wash St Bridge seismic vulnerability evaluation.00C 5 ATTACHMENT 3 City of Petaluma, California Memorandum Deparhaeat of Public Works, P.D. Box 61, Petaluma, CA 94953 (707) 778-4474 Fax (707) 776-3602 E-mail.• publicivorks@cLpetalrta:a.ca.us DATE: November 13, 2008 TO: John Brown, City Manager / FROM: Vincent Marengo, Director of Public Worl: (-im Tamera Huns, Interim Finance Director ! RE: Response to a Councilmember Question Regarding Gas Tax Expenditure Budget This is a follow-up to Councilmember Rabbitt's request on November 6, 2008, for originally adopted FY 08-09 gas tat expenditure budget detail, and a list of any unbudgeted gas tax expenditures (i.e., mid- year budget revisions that have occurred after the adoption of the budget to bring the budget current). The FY 08-09 original adopted budget (page S-43) identifies the following to be funded by Gas Tax revenues: Underground Utility District C00500104 $44,000 Crinella Street Rehabilitation C00501108 46,000 Downtown Improvements Phase II C00200603 330,000 Street Maintenance 1,100,000 General Administration, Services & Supplies, Internal Svcs 159.000 Total FY 08-09OrigivalAdoptedBudgeted Ezpenditures $1,679,000 Since the adoption of the original budget, the below items have either been approved or are scheduled for consideration by City Council. These mid -year budget adjusinients are shown to reflect die current budget, As in past years, these adjustments are summarized and brought to the City Council later in the year, as part of the mid -year budget review, to officially adjust the original adopted budget to the current adopted budget. Citywide Bridge Rehabilitation C00501404 (Resolution 2008-165 N.C.S.) $54,125 East Washington Bridge Evaluation Program Grant (to be presented at the City Council Meeting on Nov. 17, 2008) 13.000 Total FY 08-09Afid--YearBudgeted l ipeaditures $67,125 Grand Total FY 08-09 Current Budgeted Expenditures $1,746,125 After mid -year budgeted expenditures of 567,125, the PY 6/30/09 estimated gas tat fund balance, which was stated in our 11/6/08 memo as an estimate of $430,922, would change to a current estimate of $363,797. c: Lorry Zimmer, Kate Lloyd S aH,M m rotderawdErt 20011-2001ARev MM" i„ CnI-Va' o" 200,1'1 i,me S:\Gmnts-Funding Polder\HBI' Q -I igimay Bridge Program)\CC authonzmg grant application tar the Wash St Bridge seismic vulnerability evalualion.00C