17-293 - 128TH Avenue and Washington St Intersection Improvements, Project No. 17-293

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Please note that solicitations issued prior to September 07, 2016 can be found here: http://legacy.rockymountainbidsystem.com

Basic Information

Reference Number


Issuing Organization

City of Thornton

Owner Organization


Project Type

RFP - Request for Proposal

Project Number



128TH Avenue and Washington St Intersection Improvements, Project No. 17-293

Source ID




United States, Colorado, Adams County

Job Location


Piggyback Contract




02/16/2017 04:03 PM MST

Question Acceptance Deadline

03/12/2017 12:00 AM MST

Questions are submitted online


Closing Date

03/22/2017 05:00 PM MDT

Contact Information

Dennis Laurita




Project Description:  Thornton requires Engineering and Design Services for Intersection improvements at 128th Avenue and Washington Street.  
Services include the engineering, surveying, planning, and coordination necessary to design double left turn lanes in the northbound and southbound directions at the intersection of 128th Avenue and Washington Street and, at minimum, includes:

  • All widening is anticipated to occur on the east side of this intersection; 
  • Landscaping will include restoration of existing grass, tree replacement, installation of island patterned concrete, and restoration of the planting area for the relocated “Hunters Glen” Homeowner Association (HOA) monument sign located in the northeast quadrant of the Project;
  • Traffic signal poles on the east side of Washington Street will need to be relocated;
  • Relocation of existing fiber optic line is required; 
  • Storm sewer inlet relocation is required to widen Washington to the east;
  • Right-of-way (ROW) acquisition will be required with this Project;
  • The existing north bound right turn lane from Washington Street to east bound 128th Avenue will be shifted east and included within the design; and
  • Note: Project site is outside of mapped floodplain.
Additional Services include:
  • Provision of complete construction plans, specifications, bid plans and package as required for construction of improvements;
  • Four (4) legal descriptions and revisions for ROW and easement acquisition process for two (2) parcels as defined by the Thornton Project Manager;
  • Complete ROW plans in accordance with Colorado Department of Transportation (CDOT) standards;
  • Electrical drawings for fiber relocation;
  • Engineering and Design for all pedestrian crosswalks, ramps, and sidewalks within Project limits;
  • Engineering and Design needed to relocate “Hunters Glen” HOA monument sign located in the northeast quadrant of the Project intersection;
  • Utility, stormwater, demolition, traffic control (to be recommended by proposers), traffic signal modification, signing and striping, etc., and any and all drawings required for successful advertising of this Project.

The approximate Design, ROW, and construction budget is one million two hundred thousand thirty dollars ($1,230,000).
To be minimally qualified for consideration for award, proposing firms must have successfully completed three (3) projects in the Colorado Front Range corridor that have a similar degree of complexity and cost within the past seven (7) years. 

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Bid Submission Process

Bid Submission Type

Electronic Bid Submission


Lump sum


Lump sum

Bid Documents List
Item Name Description Mandatory
Bid Documents Documents defining the proposal Yes