General Contact Number: (530) 621-5567

Department of Transportation

CLICK HERE FOR: Projects Currently Out to Bid: QuestCDN

NEW: Department of Transportation will soon be accepting construction bids through Quest Construction Data Network,, for the Mosquito Road at South Fork American River Bridge Replacement Project. An approximately 1,180-foot long, three-span, cast-in-place pre-stressed concrete segmental box girder bridge will be built at 400 feet above the South Fork of the American River with an estimated construction cost of $60M. Transportation plans to start the bidding for the Project in mid-December of 2021. Construction is anticipated to start in the spring/summer of 2022. Construction firms can subscribe to this page and you will receive a notice when this page is updated to include new projects out to bid. Additional project information can be found at

Active Bids

2022 Caldor Fire Road Repair Project (West Slope)

Bid Results

Projects Bid Prior to 2014

Caltrans Standards

Catrans 2018 Standard Specifications and Plans

Caltrans Revised Standard Specifications dated April 16, 2021

Caltrans 2015 Standard Specifications

Caltrans 2015 Standard Plans

Quest Assistance

For assistance with the QuestCDN website or with creating a Quest account, please contact Quest at: (952) 233-1632 or

Bidding Assistance

​West Slope Projects​South Lake Tahoe Projects
​Brian Franklin
(530) 621-5311
​Donaldo Palaroan
(530) 573-7920
​Dan Kikkert
(530) 573-7914

DIR Assistance

To determine if a contractor or subcontractor is registered with the Department of Industrial Relations, use this search link:

DBE Assistance

For Disadvantaged Business Enterprise (DBE) information, including assistance with preparing a good faith effort, please visit the County DBE website at:


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