Site work and paving for a civil project in Evans, Colorado. Completed plans call for site work for a bridge / tunnel; for paving for a bridge / tunnel; road / highway; road / highway; and water / sewer project.

Request for Proposal Professional Engineering Design Services for the WCR 34/17 Roundabout and Bridge Replacement Project The scope of this project can be generally described as the design of a bridge (BR34/17A) replacement and the design of a roundabout with roadway improvements for an existing intersection (WCR 34/17). Question Deadline 01/05/2026 at 7:00 AM MT Questions Due: ckimmi@weld.gov with copy to bids@weld.gov The bridge design will include a two lane bridge with 6-foot paved shoulders and approach roads with 6 foot paved and 2 foot gravel shoulders. The roundabout and roadway design will likely include widening and adding free right turning lanes to reduce traffic congestion, improve truck turning movements, and enhance safety. The stormwater drainage system for the intersection will also be improved utilizing pipes, storm drainage structures, and a possible detention pond. Existing utilities within the project area shall be identified and investigated for the need to be relocated. Additional right-of-way (ROW) and easements required prior to construction of the proposed roadway improvements will be identified and acquired. The Board of Weld County Commissioners reserves the right to reject any or all bids, to waive any informality in bids, and to accept the bid that, in the opinion of the Board, is in the best interests of the Board and of the County of Weld, State of Colorado. Online bid opening information By Phone +1 720-439-5261,,621598637# United States, Denver Phone conference ID: 621 598 637# Project Overview Weld County is seeking Proposals for a Contract Professional to provide professional engineering design services. The services provided will consist of detailed road design generally consisting of but not limited to the following: Detailed bridge and road design and plans preparation using Weld County design criteria and Weld County AutoCAD templates. Plan sets include 30%, 60%, 95%, and final plans. County staff will review the plans and provide comments that will have to be addressed. Assume two rounds of review and revisions at each plan's submittal stage, and if more than two rounds are required the Contract Professional will be responsible for such costs. Surveying for all aspects of design, including ROW Plans and permission to enter forms. The ROW Plans shall be Weld County approved plans and shall be incorporated into the construction plans. Geotechnical investigation and pavement design report. The geotechnical investigation shall coordinate with the Project Manager to ensure an adequate number of bore holes are utilized. The use of ME software will be required to analyze the required pavement and base design requirements. Subsurface utility engineering (SUE) investigations, potholing, and report using the Weld County SUE template and following the Weld County SUE design criteria. A minimum of quality level A should be attempted for all utilities, oil and gas facilities, agricultural irrigation facilities, private irrigation facilities, private utility services, septic systems, leach fields, etc. Use of cameras/videos of existing culverts, irrigation pipes, and underdrains will likely be required. Utilities relocation planning, design, conflict resolution, and coordination including relocation agreements, onsite meetings, incorporation of the utility's design into the construction plans, etc. A subset of existing utilities and proposed utilities shall be included in the plans. Plan and profile sheets shall be included in the proposed utilities plan subset for each utility that will be relocating into the proposed ROW. Bridge selection report. The bridge selection report shall be submitted to WelCounty for review and acceptance. Hydraulic and drainage design and report. The report shall use the Weld County format. Naming conventions for pipes and other drainage features in the report shall be consistent with the labeling on the plans. Design of irrigation structures, pipes, crossings, and concrete lined ditches will require Weld County, Ditch Company, and landowner review and approvals. Flood Hazard Development Permit from the Weld County Planning Department. Floodplain modeling shall be completed using both one dimensional and two dimensional software that is approved for use by FEMA. The consultant shall submit all floodplain modeling to FEMA as a Conditional Letter of Map Revision (if a no-rise scenario cannot be achieved) and Letter of Map Revision (LOMR), including the associated application fees. The LOMR work shall include an as-built survey to be completed after construction. Preparation of Consultant project special provisions relating to the roundabout and bridge replacement. Weld County will compile the Contract Professional's project special provisions into the Weld County project special revisions. The method of Contractor Selection has not been Determined at this time. Request for Proposal for Design Services is Underway