Request for Bridge Design Services
November 13, 2018
You are invited to submit one copy of a quote to provide consulting services for the design of a bridge.
Scope of Work
The site is located on Brown Flats Road in the community of Indian Brook, Nova Scotia. The existing structure consists of two concrete culverts (side by side) with a plastic culvert on top. The road is two lanes and currently not paved (dirt).
Sipekne’katik is looking for the Consultant to complete a bridge survey for the bridge structure. This includes but is not limited to road cross sections, watercourse cross sections, property information, utilities, detailed bridge dimensions, water elevations, profiles, plan views, traffic signs, etc. The bridge survey work encompasses all travel, field work, and drafting to complete the survey. The Consultant shall notify if any utilities will be impacted by the new bridge design.
Sipekne’katik has not yet completed a geotechnical investigation. The Consultant will sub-contract the geotechnical services as a part of this engagement. The Consultant shall liase with geotechnical engineer through the design process and confirm foundation design meets the geotechnical requirements of the site. The Geotechnical Engineer is to provide signed letter confirming that design has met geotechnical requirements for the site.
Sipekne’katik will be looking for the engineering services for the design of a new replacement bridge at Browns Flats Road Crossing. The new bridge shall be designed to generally match the existing roadway cross-section, approximately two 3.5m wide lanes plus 1.5m wide shoulders (to be confirmed by survey and agreed with Sipekne’katik before proceeding with options analysis and detailed design).
As an initial phase, the Consultant shall prepare a preliminary design report that shall contain three viable single-span options for culvert/bridge configurations, including but not limited to the proposed superstructure, substructures, foundations, scour protection, bridge guide rail, limits of infill in the watercourse, etc. The Consultant shall consider options that could include precast concrete rigid frame or arch, and steel or concrete girder integral or semi-integral abutment bridges (with approach slabs). For pricing purposes for this engagement, the Consultant shall price on the assumption of a proprietary concrete rigid frame or arch structure, e.g. a Super ShawSpan. The preliminary design report shall include construction cost estimates and expected construction schedule/duration.
The Consultant will be responsible for design of the road alignment for the structure.
The Consultant shall contact the regulators (NSE, DNR, DFO, and NPP) to determine if structures will be acceptable for water crossing. Upon acceptance of the preferred choices by Sipekne’katik, the Consultant shall continue their work to complete the project.
Structural Designs shall be in accordance with CSA Standard CAN/CSA‐S6‐14 (current issue, including all supplements), Canadian Highway Bridge Design Code. The Design Highway Live Loading shall be CL‐625 and be a 75 year design life. For a conventional bridge, the bridge shall include a minimum 225 mm thick reinforced concrete deck, and all reinforcing shall be galvanized in foundations. The bidding documents and construction and material specifications shall be in accordance with NSTIR’s Standard Specifications, the Canadian Highway Bridge Design Code CAN/CSAS6‐14, or as otherwise agreed upon by Sipekne’katik. The bridge drawings shall provide jacking points for future bearing replacement, if applicable. Girder design drawing shall specify the maximum moment and shear resistance of the girders at ULS and SLS.
For conventional bridges, the Consultant shall provide reinforcing design for the deck, approach slabs, curbs and crash blocks with Glass fibre reinforced polymer (GFRP) reinforcement (top and bottom).
A hydrology report has already been completed and the required bridge opening has been determined (see attached).
The Consultant is responsible for designing the scour protection. The design methods for scour protection and hydraulic design shall meet CHBDC and TAC Guidelines to Bridge Hydraulics.
The Consultant is responsible for all regulatory approvals (agencies could include Fisheries and Oceans Canada, Transport Canada Navigable Waters, NS Department of Environment, and NS Department of Natural Resources). Copies of all submissions shall be submitted to Sipekne’katik. The Consultant shall contact the regulatory authorities monthly to report on the status of the permits. The construction is scheduled to be completed in 2019, so permit applications are to be made for summer 2019 construction season (June 01, 2019 – September 30th, 2019).
The Consultant shall prepare an Environmental Effects Determination Report (EED) for the bridge replacement project. An EED report template is attached. The Environmental Consultant is required to visit the site to become familiar with the surroundings. The report shall satisfy the requirements of all regulatory agencies. Agencies include Fisheries and Oceans Canada, Transport Canada Navigable Waters, NS Department of Environment and NS Department of Natural Resources.
Infilling of the watercourse may be considered to cause Serious Harm to fish habitat which is to be addressed in the EED. If necessary, Sipekne’katik will consult with DFO for the project to proceed. The Consultant is to identify the locations and exact area(s) of infilling of the watercourse, both temporary and permanent, in the original regulatory submissions and complete Serious Harm applications, if necessary.
The Consultant is responsible to complete an Archaeological Resource Impact Assessment (ARIA) as per the guidelines for a category “C” ARIA detailed on Nova Scotia Communities, Culture and Heritage website (http://www.gov.ns.ca/tch/archaeology_guidelines.asp). In advance of the ARIA, the Consultant shall apply for a Category “C” Heritage Research Permit through Nova Scotia Communities Culture and Heritage. The ARIA shall include a historical background study of the development area by a qualified Archeologist, who is eligible to hold permits in the province of Nova Scotia, to determine the potential for archeological resources within impact zone. This shall include consultation of the Maritime Archeological Resource Inventory, as well as historic maps, manuscripts, and published sources. Predictive modelling of
First Nations Resources shall be conducted in order to determine potential for such resources.
The Consultants fee shall include a field survey of the project area conducted by a qualified Archaeologist including limited testing if necessary. Limited testing is required if archaeological or First Nations/historical remains are suspected, or located, during preliminary investigations. It consists of an examination of the project area, including subsurface deposits (shovel testing within the proposed impact area of the project), for the purpose of obtaining information on archaeological resources. This type of investigation will establish the location and the nature of aboriginal and historical resources in the proposed project area. In addition, limited testing will provide the basis for one or more recommendations to the Heritage Division. The Consultant shall notify Sipekne’katik one week in advance of field survey with a tentative date and confirm within 48 hours’ notice.
The Consultant shall prepare an Archaeological Resource Impact Assessment report and shall specify the potential risk (low, medium, or high) for encountering archeological sites within the project area and recommendations for further archeological mitigation if necessary. The preliminary report shall be submitted to Nova Scotia Communities, Culture and Heritage for review and approval prior to submitting to Sipekne’katik.
The Consultant shall pursue the EED, and the ARIA in parallel with preparing the design. The Consultant shall prepare design documents that fully comply with the conditions for approval imposed by Regulatory Authorities. Design Drawings shall include Environmental Drawing(s) showing temporary and permanent erosion and sedimentation controls for construction.
The Consultant shall submit a copy of design calculations and model results for the design of the bridge structure. These shall include structural analysis model reports, hand calculations, and design references used to complete the design of the superstructure and substructure. These shall be submitted in PDF form upon completion of the design.
The Consultant shall provide post‐design services, during the tender and construction phases of the project. These services shall include tendering (preparing contract/bidding documents, advertising tenders, reviewing/evaluating bids and recommending award), responding to questions from contractors/suppliers, providing written clarifications/instructions, supplemental details and sketches/drawings, “onetime” review of contractor submissions, shop drawings, etc. The post‐design services would include normal intermittent site inspection, as recommended and identified in the proposal by the Consultant as needed to verify construction is in general compliance with the design documents and to confirm progress, contract administration, and preparation of Record Drawings.
During the course of this project the results that Sipekne’katik will receive will include:
1. Geotechnical Investigation
2. Environmental Effects Determination Report (EED)
3. Archaeological Resource Impact Assessment Screening Report
4. Bridge Site Survey
5. Preliminary Design Report
6. 50% complete set of design drawings for review to Sipekne’katik in PDF format
7. 95% complete set of design drawings for review to Sipekne’katik in PDF format
8. Geotechnical Engineer’s review of foundation design
9. One complete set of design drawings marked “Issued for Construction”. The drawings shall be reviewed and stamped by two Professional Engineers licensed to practice in Nova Scotia, and they shall be provided in PDF format, in accordance with Nova Scotia Provincial Standards
10. Bidding documents and contract based on NSTIR standard specification, material quantities, special provision specifications and detailed cost estimate for tendering. Consultant shall provide their material quantity calculations for review by the Sipekne’katik.
11. Tendering results and Bid Evaluation Summary.
12. Inspection Reports and Deficiency List.
13. Payment Certificates and Substantial Completion Certificate.
14. Record Drawings and construction contract close-out documentation.
All deliverables must be completed by April 30, 2019. Please include a proposed timeline as part of your submission.
Contact Matthew Horton (902-956-2473) for additional information to assist in preparation of your submission.
• Payment terms will be finalized as part of Sipekne’katik reaching agreeable terms and conditions with the successful bidder(s) and will be based on successfully meeting milestones / progress payments.
• Sipekne’katik will not necessarily accept the lowest proposal received and it reserve the right to accept or reject any or all proposals submitted
• Sipekne’katik is not responsible for any and all expenses associated with proposal development.
Sealed proposal will be accepted until 12:00 PM Atlantic Time December 14, 2018. Each proposal should be signed and submitted in a sealed envelope and addressed as follows:
RE: RFP # 2019-32
Chief and Council
522 Church Street
Indian Brook, NS