TO: Board of Supervisors
FROM: Steven Lederer - Director of Public Works
REPORT BY: Graham Wadsworth, P.E. - Engineering Supervisor
SUBJECT: Amendment 2 to Professional Services Agreement No.170635B for Biggs Cardosa Associates, Inc. for the Dry Creek Road Bridge Replacement Project, RDS 15-22
RECOMMENDATION
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Director of Public Works requests the following actions for the Dry Creek Road Bridge Replacement Project:
1. Approval of and authorization for the Chair to sign Amendment No. 2 to Agreement No. 170635B with Biggs Cardosa Associates, Inc. (BCA) to increase maximum compensation by $133,150, for a new maximum of $1,279,391 for additional engineering services; and
2. Approval of a Budget Transfer for the following (4/5 vote required):
a. Increase appropriations by $133,150 in the Measure T Non-Operating Special Revenue Fund (SRF) (Fund 2440, Org 1220053) to transfer to Project 14009 (Fund 2040, Org 2040500) offset by use of its available fund balance; and
b. Increase appropriations by $133,150 in the Project 14009 budget offset by an increase in revenue from the transfer from the Measure T SRF budget.
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EXECUTIVE SUMMARY
The Dry Creek Road Bridge over Dry Creek is over 90 years old and is in need of replacement. Caltrans identified the bridge is structurally deficient, functionally obsolete and unstable due to scour under the north abutment. Dry Creek Road is designated as a "minor collector", the existing bridge is an "Off-System" bridge, and thus the replacement is eligible for 88.53% Highway Bridge Program (HBP) funding and 11.47% Toll Credits as the match for local funds. The County pays for expenses and requests reimbursement from Caltrans.
As a result of completing the 65% design and the environmental documents the following scope changes were identified: 1) In 2021, Caltrans changed the bridge design requirements, 2) the U. S. Army Corps of Engineers (USACE) added a new 404 permit requirement, 3) relocation of an AT&T pole requires an unant...
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