Purpose/Background

Boulder County is seeking a qualified Civil Engineering firm to develop preliminary designs for two bridge replacements to make the crossings more resistant to flooding impacts and to make the cross-sections consistent with recent planning efforts. The scope of work and requirements are unique for each project. Each project will be managed individually, with its own budget, under a single contract awarded to one consulting firm. The two locations and brief scope descriptions are as follows:

• State Highway 7 (Arapahoe Road) at Dry Creek (CDOT Bridge #D-16-BW): The Boulder County Floodplain Management and Transportation System Resilience Study showed that this location would cause extreme negative impacts if damaged in a flood event. Also, the recently completed CO 7 PEL recommends a wider cross-section across the bridge for multimodal improvements. Lastly, the bridge has one of the lowest structural sufficiency ratings on CO 7 between Boulder and Brighton. A hydraulic analysis is expected to determine size and clearance height necessary to accommodate future flooding. Work may include a structure selection report.

• Kenosha Road at Coal Creek: The alignment of Coal Creek as it crosses Kenosha Road has fewer constraints, with the majority of the flow issues north of the road where the creek flows underneath the Martha Mathews Ditch. As such, alternative alignments for both the road and creek will be considered as part of the design process. A hydraulic analysis will be needed to determine size and clearance of the Kenosha Road crossing of Coal Creek. Creek mitigation alternatives could also be analyzed up- and down-stream of the crossing to accommodate future flooding.

The goal for each location is to develop a preliminary design with enough detail to use in a future FEMA grant application. The preliminary designs should make each crossing resilient to future flood disasters, allowing the road to remain open and avoid damage to the roadway or structure, while also having a Benefit-Cost Analysis (BCA) of 1.0 or greater if possible (based on FEMA’s BCA tool). The designs shall be accompanied by an opinion of probable construction cost as well as any additional right-of-way needed permanently or temporarily during construction. Cost estimates shall be sufficient to submit grant applications for additional funding for final design and construction through the FEMA Building Resilient Infrastructure and Communities (BRIC) program.

Funding for this project is provided through the FEMA Pre-Disaster Mitigation Advanced Assistance program and must comply with all FEMA requirements. Due to grant funding deadlines, all work for the project must be completed by February 11, 2022. Specifications and a sample contract with a FEMA specific addendum are attached. The successful proposer shall execute the attached addendum as part of any contract with the county and comply with all FEMA requirements set forth in that addendum.

Written Inquiries

All inquiries regarding this RFP will be submitted via email to the Boulder County Purchasing Office at purchasing@bouldercounty.org on or before 2:00 p.m. March 5, 2021. A response from the county to all inquiries will be posted and sent via email no later than March 10, 2021.

Please do not contact any other county department or personnel with questions or for information regarding this solicitation.

Submittal Instructions

Submittals are due at the email box only, listed below, for time and date recording on or before 10:00 a.m. Mountain Time on March 19, 2021.

RFP #7210-21

The attached addendum supersedes the original Information and Specifications regarding RFP # 7210-21 where it adds to, deletes from, clarifies or otherwise modifies. All other conditions and any previous addendums shall remain unchanged.

Please note: Due to COVID-19, BIDS will only be accepted electronically by emailing purchasing@bouldercounty.org.

RFP #7210-21 Addendum 1

The attached addendum supersedes the original Information and Specifications regarding RFP # 7210-21 where it adds to, deletes from, clarifies or otherwise modifies. All other conditions and any previous addendums shall remain unchanged.

Please note: Due to COVID-19, BIDS will only be accepted electronically by emailing purchasing@bouldercounty.org.

RFP #7210-21 Addendum 2