Listed are all currently available notices inviting bids for County of Riverside Transportation Department public works projects.
Note: The documents provided are intended for use by professional contractors or by internal County staff and are not intended for use by the general public. It is expected that the targeted users are capable of viewing and printing Acrobat pdf files. Therefore, these documents are provided as PDF files only.
Current Projects Out to Bid
1 of 3
Interstate 10 at Monroe Street
Interchange Improvements
In the City of Indio
Project No. C7-0048
Federal Aid No. STPLN-5956(294)
No DBE contract goal
Notice to Bidders - Interstate 10 at Monroe Street Interchange Improvements
Pre-Bid Meeting: Wednesday, September 30, 2026, 3:00 p.m. (Mandatory)
Pre-Bid Meeting Agenda Pre-Bid Meeting Presentation Pre-Bid Meeting Attendance Roster
Bid Due Date: Wednesday, October 14, 2026, 2:00 p.m.Wednesday, October 21, 2026, 2:00 p.m.Wednesday, October 28, 2026, 2:00 p.m.Wednesday, November 4, 2026, 2:00 p.m.
Thursday, November 12, 2026, 2:00 p.m.
(Date last revised by Addendum No. 5)
Bidders are advised not to anticipate another bid date extension.
Bid Items - Interstate 10 at Monroe Street Interchange Improvements
Document
Proposal, page B2 - B16
Proposal Last Superseded by Addendum No. 6
Vicinity Map - Interstate 10 at Monroe Street Interchange Improvements
Document
In the City of Indio
Plan Holder List - Interstate 10 at Monroe Street Interchange Improvements
As of 11/6/2026
Addenda
1. Addendum No. 1 dated September 23, 2026 Addendum No. 1 (2 pages)
2. Addendum No. 2 dated October 1, 2026 Addendum No. 2 (1 page)
3. Addendum No. 3 dated October 8, 2026 Addendum No. 3 (1 page)
4. Addendum No. 4 dated October 22, 2026 Addendum No. 4 dated 10/22/2026 (5 pages) Attachment "A" to Addendum No. 4 (Revised Proposal, 15 pages)
Proposal Last Superseded by Addendum No. 6 Attachment "B" to Addendum No. 4 (Revised Plans, 9 sheets) Attachment "C" to Addendum No. 4 (Q & R’s, 11 pages) 5. Addendum No. 5 dated October 30, 2026 Addendum No. 5 dated 10/30/2026 (7 pages) Attachment "A" to Addendum No. 5 (Revised Proposal, 15 pages)
Proposal Last Superseded by Addendum No. 6 Attachment "B" to Addendum No. 5 (Revised Plans, 13 sheets) Attachment "C" to Addendum No. 5 (Q & R’s, 20 pages) 6. Addendum No. 6 dated November 6, 2026 Addendum No. 6 dated 11/6/2026 (3 pages) Attachment "A" to Addendum No. 6 (Revised Proposal, 15 pages) Attachment "B" to Addendum No. 6 (Revised Plans, 3 sheets) Attachment "C" to Addendum No. 6 (Q & R’s, 4 pages)
Supplemental Information
1. Revised Geotechnical Design Report Dated May 1, 2023, Revised January 20, 2026 (279 pages)
2. Revised Materials Report Dated May 2, 2023, Revised February 27, 2025 (283 pages)
3. Revised Foundation Report - Retaining Wall No. 35 Dated May 2, 2023, Revised July 28, 2025 (103 pages)
4. Revised Foundation Report - Retaining Wall No. 50 Dated May 2, 2023, Revised July 28, 2025 (126pages)
5. Updated Foundation Report - Overcrossing [Bridge No. 56-0897] Dated May 1, 2023, Updated October 3, 2024 (257 pages)
6. Foundation Report - Bridge Over CVSW Channel [Bridge No. 56C0667] Dated May 24, 2023, Updated May 22, 2026 (640 pages)
7. Aerially Deposited Lead Report Dated October 26, 2018 (58 pages)
8. Final Hydraulic Report - Bridge Over CVSW Channel [Bridge No. 56C0667] Dated May 2026 (249 pages)
9. Indio Water Authority 9A. Waterline Relocation Plans (7 sheets) 9B. Waterline Relocation Specifications (190 pages) 9C. Waterline Relocation Standard Plans (152 sheets)
10. SoCal Gas SoCal Gas Relocation Plans (73 sheets)
11. Imperial Irrigation District Relocation Plans Imperial Irrigation District Relocation Plans (1 sheet)
12. Imperial Irrigation District Developer Energy Planning Guide Developer Energy Planning Guide 2025, Rev 54 (281 pages)
13. CV Link Shade Structure Shop Drawings (17 sheets)
14. Bridge As-Built Bridge Drawings 14A. 1969 Overcrossing Plans [Bridge No. 56-0897] (11 sheets) 14B. 1969 Bridge Over CVSW Channel Plans [Bridge No. 56C0667] (12 sheets) 14C. 2017 Overcrossing Maintenance Plans [Bridge No. 56-0897] (1 sheet)
15. Cross Sections Cross Sections (64 sheets)
16. Bridge Renderings Power Coating and Concrete Stain Colors (3 pages)17. Temporary Water Pollution Control Plans Temporary Water Pollution Control Plans (9 sheets)18. As-Built Drawings, Coachella Valley Stormwater Channel Slope Protection As-Built Drawings, Coachella Valley Stormwater Channel Slope Protection (18 sheets)
Digital Plans and digital Bid Book are available at no cost.
To obtain a download link, please contact [email protected] (or call (951) 955-6780) and provide company contact information needed for our Plan Holder List (PHL). Once your information is added to the PHL, we will send download link to the provided e-mail address. Printed copy set of Plans and Bid Book are also available for the cost amount listed above (Mail/Shipping cost not included).
Printed document costs:
Bid Book and Plans (11" x 17"): $65.00
Plan Holder List registration and notifications:
Bidding Contractors who obtain digital copies of Plans and Bid Book from planroom(s) are advised to contact [email protected] (or call (951) 955-6780) to have company contact information entered on our Plan Holder List so that we can directly contact your company with any bidding notifications regarding this project.
Company Information requested for Plan Holder List (PHL)
- Company name
- Contact person first and last name
- Company physical address (Street, City, Zip Code)
- E-mail address
- Office phone number
- FAX number
2 of 3
Dos Lagos Drive and Weirick Road Resurfacing
Temescal Canyon Road to Knabe Road
Community of El Cerrito
Project No. D4-0089
Notice to Bidders - Dos Lagos Drive and Weirick Road Resurfacing
Pre-Bid Meeting: None
Bid Due Date: Wednesday, December 2, 2026, 2:00 p.m.
Bid Items - Dos Lagos Drive and Weirick Road Resurfacing
Proposal, page B2
Vicinity Map - Dos Lagos Drive and Weirick Road Resurfacing
In the Community of El Cerrito
Plan Holder List - Dos Lagos Drive and Weirick Road Resurfacing
As of 11/13/2026
Addenda
None.
Supplemental Information
None.
Digital Plans and digital Bid Book are available at no cost.
To obtain a download link, please contact [email protected] (or call (951) 955-6780) and provide company contact information needed for our Plan Holder List (PHL). Once your information is added to the PHL, we will send download link to the provided e-mail address. Printed copy set of Plans and Bid Book are also available for the cost amount listed above (Mail/Shipping cost not included).
Printed document costs:
Bid Book and Plans (24" x 34"): $25.00
Plan Holder List registration and notifications:
Bidding Contractors who obtain digital copies of Plans and Bid Book from planroom(s) are advised to contact [email protected] (or call (951) 955-6780) to have company contact information entered on our Plan Holder List so that we can directly contact your company with any bidding notifications regarding this project.
Company Information requested for Plan Holder List (PHL)
- Company name
- Contact person first and last name
- Company physical address (Street, City, Zip Code)
- E-mail address
- Office phone number
- FAX number
3 of 3
Mt. Vernon Avenue Sidewalk Project
Spring Street to Center Street
Community of Highgrove
Project No. D5-0055
Notice to Bidders - Mt. Vernon Avenue Sidewalk Project
Pre-Bid Meeting: None
Bid Due Date: Wednesday, December 2, 2026, 2:00 p.m.
Bid Items - Mt. Vernon Avenue Sidewalk Project
Proposal, page B2
Vicinity Map - Mt. Vernon Avenue Sidewalk Project
In the Community of Highgrove
Plan Holder List - Mt. Vernon Avenue Sidewalk Project
As of 11/13/2026
Addenda
None.
Supplemental Information
None.
Digital Plans and digital Bid Book are available at no cost.
To obtain a download link, please contact [email protected] (or call (951) 955-6780) and provide company contact information needed for our Plan Holder List (PHL). Once your information is added to the PHL, we will send download link to the provided e-mail address. Printed copy set of Plans and Bid Book are also available for the cost amount listed above (Mail/Shipping cost not included).
Printed document costs:
Bid Book and Plans (24" x 34"): $40.00
Plan Holder List registration and notifications:
Bidding Contractors who obtain digital copies of Plans and Bid Book from planroom(s) are advised to contact [email protected] (or call (951) 955-6780) to have company contact information entered on our Plan Holder List so that we can directly contact your company with any bidding notifications regarding this project.
Company Information requested for Plan Holder List (PHL)
- Company name
- Contact person first and last name
- Company physical address (Street, City, Zip Code)
- E-mail address
- Office phone number
- FAX number
Additional Notifications
Pre-Bid Meeting Notice:
Attendance by bidding contractors at Pre-Bid meetings is recommended but optional, unless noted otherwise.
ADA Notice:
In compliance with Title II of the Americans with Disabilities Act (ADA), the County of Riverside does not discriminate on the basis of disability in admission to, access to, or operations of its programs, services or activities. It is committed to ensuring that its programs, services and activities are fully accessible to and usable by people with disabilities.
To accommodate persons with disabilities, documents in this web page are available in alternate formats upon request.
Request for e-mail notifications:
Email [email protected] with “Request for e-mail notifications regarding bids” in the subject line to be added on an e-mailing notification list regarding this webpage. E-mail notices are sent to this notification list when new County public works project bids are added, amended, and/or when bid summaries are posted.
Notice:
The County of Riverside Transportation Department intends soon to utilize
an electronic bidding software, to assist the prequalification, proposals, advertising and bid process for our public works projects.
Click here to register
Contact Information
Mail and e-mail address & phone
Riverside County Transportation Department
Contracts / Bidding Unit
3525 14th Street
P.O. Box 1090
Riverside, CA 92502 (USA)
[email protected]
Phone: (951) 955-6780
Fax: (951) 955-3164
Office Location:
3525 14th Street
Riverside, CA 92501
The building is on the corner of 14th Street and Lemon Street.
Location Map
Please note office location address is the location for purchase of plans and specifications that will be out to bid, and is also the location for submittal of paper bids for Transportation Department public works projects. The Transportation Department Annex is located 2 blocks south of the County Administrative Center.
If paying for copy of Plans and Bid Book, only checks can be accepted at the 14th Street Annex. Payment by cash, if unavoidable, must be made at the County Administrative Center.