Loading...
HomeMy WebLinkAboutMINUTES - 04162013 - C.06RECOMMENDATION(S): APPROVE the Marsh Creek Detention Facility Bridge Replacement Project, and AUTHORIZE the Public Works Director, or designee, to advertise the project [DCD-CP#12-38], Clayton area. (District III) [Project No.: 4660-6X4015] FIND, on the basis of the Mitigated Negative Declaration (SCH # 2013022059) and all comments received contained herein, that there is no substantial evidence that the project will have a significant effect on the environment, and ADOPT the Mitigated Negative Declaration and Mitigation Monitoring Program in compliance with the California Environmental Quality Act (CEQA) (the custodian of which is the Department of Conservation and Development Director who is located at 30 Muir Road, Martinez), and DIRECT the Director of Department of Conservation and Development to file a Notice of Determination with the County Clerk, and AUTHORIZE the Public Works Director to arrange for payment of a $25.00 fee to Department of Conservation and Development for processing, and a $50.00 fee to the County Clerk for filing the Notice of Determination, and $2,156.25 for California Department of Fish and Wildlife fees. APPROVE OTHER RECOMMENDATION OF CNTY ADMINISTRATOR RECOMMENDATION OF BOARD COMMITTEE Action of Board On: 04/16/2013 APPROVED AS RECOMMENDED OTHER Clerks Notes: VOTE OF SUPERVISORS AYE:John Gioia, District I Supervisor Candace Andersen, District II Supervisor Mary N. Piepho, District III Supervisor Karen Mitchoff, District IV Supervisor Federal D. Glover, District V Supervisor Contact: L. Chavez, 925-313-2366 I hereby certify that this is a true and correct copy of an action taken and entered on the minutes of the Board of Supervisors on the date shown. ATTESTED: April 16, 2013 David Twa, County Administrator and Clerk of the Board of Supervisors By: Stacey M. Boyd, Deputy cc: CAO, Auditor-Controller, Public Works Finance, Public Works Environmental, Public Works Originator, Public Works Enviro - T. Torres, Public Works Design/Construction C. 6 To:Board of Supervisors From:Julia R. Bueren, Public Works Director/Chief Engineer Date:April 16, 2013 Contra Costa County Subject:APPROVE the Marsh Creek Detention Facility Bridge Replacement Project and make related findings under CEQA, Clayton area. RECOMMENDATION(S): (CONT'D) FISCAL IMPACT: This project is funded by Federal Highway Bridge Program (HBP) funds 80% and County General Funds (CAO) 20%. BACKGROUND: Country Costa County Public Works Department (County) is proposing the replacement of the existing Marsh Creek Detention Facility bridge over Marsh Creek, adjustment of approximately 300 feet of roadway to accommodate the new bridge, and limited modification of the creek bank to prevent future erosion. The bridge replacement is necessary due to significant deterioration of bridge structures (timber decking, deck places, and rail posts) and the scouring action of Marsh Creek upstream of the current bridge’s east and west abutments. The scouring caused by Marsh Creek could render the current bridge unsafe for use until repaired and strand facility personnel and inmates. The bridge has been classified as structurally deficient by Caltrans inspections with a sufficiency rating of 10.8 out of 100. The timber decking is deteriorating; cracks and rotting are apparent on the deck planks and rail posts; the steel girders are rusted; the bridge supports have been damaged on the upstream side with scour evident at both abutments; the northern bridge abutment is located in the creek to shorten the bridge length, but this shorter bridge length causes a creek constriction which contributes to Marsh Creek scouring activity. The current bridge will be replaced on its existing alignment with a 60-foot long single-span cast-in-place, prestressed concrete bridge. Roadway approaches to the new bridge will vary in width from the 16-foot wide bridge width to the existing road width at the conforms (approximately 20-foot width). The replacement bridge will provide one 12-foot wide traffic lane, two 2-foot wide shoulders, and single beam barrier rails along both sides. The proposed vertical alignment design of the bridge will provide adequate hydraulic clearance for flows. The roadway approach construction will include fills up to 6 feet high on both sides of the bridge, beyond top of bank of the creek, which is necessary to meet hydraulic clearance requirements. Based on the roadway classification, level terrain, and daily traffic volumes, it is anticipated that a roadway design speed of 15 mph will be used. In order to meet the various road geometry requirements, the new roadway requires constructing approximately 300 feet of new paved roadway. The approach work is necessary to provide a smooth alignment that will tie into existing roadway geometry at the project limits. Due to the scouring action of Marsh Creek, protection of the abutments against scour is required. Protection is expected to consist of rock slope protection (RSP) along both banks for a stretch of approximately 60 feet (20 feet upstream, 20 downstream and 20 feet below the bridge deck). Since the new bridge will be constructed on the existing bridge alignment, a temporary detour placed slightly downstream of the existing bridge is required to accommodate traffic during construction of the new bridge. The detour will be constructed by placing culverts and a bed of clean crushed gravel across the creek. If placement of soil is necessary to provide a stable foundation for the detour road, it will be completely contained with filter fabric or similar material to ensure that the soil fill can be collected and completely removed from the creek upon completion of the work. The temporary detour road may also be constructed of aggregate base and hot mix asphalt. All material used to construct the temporary detour road will be removed from the creek at the completion of the project. A temporary work area within the creek will be needed to construct the necessary falsework. In order to construct the bridge, falsework which is expected to consist of the typical post and beams founded on wooden pads, or similar method will be placed within the creek. Clean, washed gravel pads may be used if falsework supports need to be placed in the creek. The creek widening and abutment-driven piles or spread footings will be excavated and the materials likely used for roadway embankment. Utility openings will be provided on the new bridge for any future utility expansion. Light poles with overhead power supply are located on the east side of the road which will likely be temporarily relocated to accommodate the road detour. Barbed wire fencing may need to be removed but will be replaced once the project is completed. Once complete, the road will receive thermoplastic center lines and edge lines, and any existing signage will be relocated. Although unlikely, real property transaction may be necessary in support of the project. CONSEQUENCE OF NEGATIVE ACTION: Delay in approving the project will result in a delay of design and construction and may jeopardize funding. CHILDREN'S IMPACT STATEMENT: Not applicable. Not applicable. ATTACHMENTS NOD Final MCDFBR - IS - 2013 - Final-signed-2 MCDFBR - MND - MMRP -2013 - Final-signed No Response Ltr CALIFORNIA ENVIRONMENTAL QUALITY ACT NOTICE OF DETERMINATION Authority cited: Sections 21083, Public Resources Code. Reference Section 21000-21174, Public Resources Code. \\PW-DATA\grpdata\engsvc\ENVIRO\Board Orders\2013\4-16-13\MCDFBR BO\(2013) NOD-MCDFBR_Final.doc Form Revised: January 2013 To: From: Office of Planning and Research Contra Costa County For U.S. Mail: Street Address: Dept. of Conservation & Development P.O. Box 3044 1400 Tenth St., Rm 113 30 Muir Road Sacramento, CA 95812-3044 Sacramento, CA 95814 Martinez, CA 94553 County Clerk County of: Contra Costa 555 Escobar Street Martinez, CA 94553 State Clearinghouse Number: 2013022059 Project Title: Marsh Creek Detention Facility Bridge Replace ment Project, Project No.0662-6R4015, CP#12-38 Project Applicant: Contra Costa County Public Works Department Project Location: The project is located at Marsh Creek Detention Facility, 12000 Marsh Creek Road in east Contra Costa County. Project Description: Country Costa County Public Works Department (County) is proposing the replacement of the existing Marsh Creek Detention Facility bridge over Marsh Creek, adjustment of approximately 300 feet of roadway to accommodate the new bridge, an d limited modification of the creek bank to prevent future erosion. The bridge replacement is necessary due to significant deterioration of bridge structures (timber decking, deck places, and rail posts) and the scouring action of Marsh Creek upstream of the current bridge’s east and west abutments. The scouring caused by Marsh Creek could render the current bridge unsafe for use until repaired and strand f acility personnel and inmates. The bridge has been classified as structurally deficient by Caltrans inspections with a sufficiency rating of 10.8 out of 100. The timber decking is deteriorating; cracks and rotting are apparent on the deck planks and rail posts; the steel girde rs are rusted; the bridge supports have been damaged on the upstream side with scour eviden t at both abutments; the northern bridge abutment is located in the creek to shorten the bridge length, but this shorter bridge length causes a creek constriction which contributes to Marsh Creek scouring activity. The current bridge will be replaced on i ts existing alignment with a 60-foot long single-span cast-in-place, prestressed concrete bridge. Roadway approaches to the new bridge will vary in width from the 16 -foot wide bridge width to the existing road width at the conforms (approximately 20-foot width). The replacement bridge will provide one 12 -foot wide traffic lane, two 2-foot wide shoulders, and single beam barrier rails along both sides. The proposed vertical alignment design of the bridge will provide adequate hydraulic clearance for flows. The roadway approach construction will include fills up to 6 feet high on both sides of the bridge, beyond top of bank of the cre ek, which is necessary to meet hydraulic clearance requirements. Based on the roadway classification, level terrain, and daily traffic volumes, it is anticipated that a roadway design speed of 15 mph will be used. In order to meet the various road geometry requirements, the new roadway requires constructing approximately 300 feet of new paved roadway. The approach work is necess ary to provide a smooth alignment that will tie into existing roadway geometry at the project limits. Due to the scouring action of Marsh Creek, protection of the abutme nts against scour is required. Protection is expected to consist of rock slope protect ion (RSP) along both banks for a stretch of approximately 60 feet (20 feet upstream, 20 downstream and 20 feet below the bridge deck). Since the new bridge will be constructed on the existing bridge alignment, a temporary detour placed slightly downstream of the existing bridge is required to accommodate traffic during construction of the new bridge. The detour will be constructed by placing culverts and a bed of clean crushed gravel across the creek. If placement of soil is necessary to provide a stable foundation for the detour road, it will be completely contained with filter fabric or similar material to ensure that the soi l fill can be collected and completely removed from the creek upon completion of the work. The temporary detour road may also be c onstructed of aggregate base and hot mix asphalt. All material used to construct the temporary detour road will be removed from the creek at the completion of the project. A temporary work area within the creek will be needed to construct the necessary f alsework. In order to construct the bridge, falsework which is expected to consist of the typical post and beams founded on wooden pads, or similar method wi ll be placed within the creek. Clean, washed gravel pads may be used if falsework supports need t o be placed in the creek. The creek widening and abutment-driven piles or spread footings will be excavated and the materials likely used for roadway embankment. Utility openings will be provided on the new bridge for any future utility expansion. Light poles with overhead power supply are located on the east side of the road which will likely be temporarily relocated to accommodate the road detour. Barbed wire fencing may need to be removed but wi ll be replaced once the project is completed. Once complete, the road will receive thermoplastic center lines and edge lines, and any existing signage will be relocated. Although unlikely, real property transaction may be necessary in support of the project. The project was approved on: 1. The project [ will will not] have a significant effect on the environment. 2. An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA. A Negative Declaration was prepared for this project pursuant to the provisions of CEQA. 3. Mitigation measures [ were were not] made a condition of the approval of the project. 4. A mitigation reporting or monitoring plan [ was was not] adopted for this project. 5. A statement of Overriding Considerations [ was was not] adopted for this project. 6. Findings [ were were not] made pursuant to the provisions of CEQA. Notice of Determination sent to Office of Planning and Research.* This is to certify that the final EIR with comments and responses and record of project approval, or the Negative Declaration, is available to the General Public at: Contra Costa County Public Works Department 255 Glacier Drive, Martinez, CA 94553 Signature (Contra Costa County): Title: Date: Date Received for filing at OPR: AFFIDAVIT OF FILING AND POSTING I declare that on ____________________________________________ I received and posted this notice as required by California Public Resources Code Section 21152(c). Said notice will remain posted for 30 days from the filing date. Signature Title: Applicant: Department of Fish and Wildlife Fees Due Public Works Department EIR - $2,995.25 Total Due: $ 2,231.25 255 Glacier Drive Neg. Dec. - $2,156.25 Total Paid $ Martinez, CA 94553 DeMinimis Findings - $0 Attn: Kimani Birden County Clerk - $50 Receipt #: Environmental Division Conservation & Development - $25 Phone: (925) 313-2190 *Notice of Determination may be sent by fax to (916) 323-3018, if followed up with a duplicate mailed copy.