25-06-C Mt. Whitney Ave. Road Reconstruction and Shoulder Improvements

Results

25-06-C is anticipated to award on December 9, 2025.

A bid opening for this project was held on November 6, 2025.

Bid Summary(PDF, 338KB)

Everyone who has expressed interest in this project is available on the Planholders List(PDF, 87KB).

Description

The work to be done consists, in general, of reconstruction and improvements to approximately 1.6 miles of roadway from Marks Avenue to Blythe Avenue on Mt. Whitney Avenue in the unincorporated community of Riverdale. The road, including the travel lanes, the eight-foot paved shoulder, and the parking area will be reconstructed using a Full-Depth Reclamation cement treated method. The project also includes signage and striping, excavation and construction of a retention basin, storm drain improvements, adjusting sewer manholes, water valve boxes, and other miscellaneous items. Additive 1 bid items include installation of a Pedestrian Hybrid Beacon (PHB), also known as a High-Intensity Activated Crosswalk (HAWK) system, at the intersection of Mt. Whitney Avenue and Feland Avenue with necessary civil work as shown in the plans.

Federal Project Number: CPFL-5942(314)

The engineer's estimate range is $5,800,000 - $6,400,000.

There is no DBE Contract Goal.

Location Map(PDF, 1MB)

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Specifications and Plans

Notice to Bidders(PDF, 171KB) posted 10/06/2025

Specifications(PDF, 7MB) posted 10/10/2025

Plans(PDF, 20MB) posted 10/10/2025

Addendum 1(PDF, 2MB) posted 10/22/2025

Addendum 1 - Plans(PDF, 1MB) posted 10/22/2025

Supplemental Information

Requests for Clarification Responses updated 10/30/2025

MW Basin Cross Sections(PDF, 665KB) posted 10/10/2025

MW Phase 1 Sections(PDF, 6MB) posted 10/10/2025

Pothole Report(PDF, 2MB) posted 10/10/2025

Mt. Whitney Ave Basin - Supplemental(PDF, 172KB) posted 10/21/2025

Soil Testing Results for Lead(PDF, 3MB) posted 10/21/2025

Pre-bid Meeting

County staff was available to discuss bidding logistics for this project on:

Wednesday, October 15, 2025 at 10:00 A.M. Pacific on Zoom

Pre-Bid Agenda(PDF, 143KB) posted 10/13/2025

Pre-Bid Attendance(PDF, 86KB) posted 10/15/2025

Pre-bid Minutes and Presentation Slides(PDF, 2MB) posted 10/16/2025