HomeMy WebLinkAboutAECOM_-_SA__1_-_Underwater_Bridge_Inspection_-_6.1.26Docusign Envelope ID: FC03E4DE-304E-838E-81B4-75755378BEB1
AECOM
AECOM 319-232-6531 tel
501 Sycamore Street 319-439-3089 fax
Suite 222
Waterloo, Iowa 50703
www.aecom.com
2025 BIENNIAL BRIDGE REVIEW PROGRAM
UNDERWATER INSPECTION
CITY OF WATERLOO
SUPPLEMENTAL AGREEMENT NO. 1
WHEREAS, a Professional Services Agreement was entered into between the City of Waterloo (Client),
715 Mulberry Street, Waterloo, Iowa, and AECOM Technical Services, Inc. (ATS), 501 Sycamore Street,
Suite 222, Waterloo, Iowa, dated May 19, 2025, for the 2025 Biennial Bridge Review Program; and
WHEREAS, the Client and ATS now desire to enter into Supplemental Agreement No. 1 for underwater
bridge inspection services.
NOW THEREFORE, it is mutually agreed to amend the original Professional Service Agreement as follows:
I. PROJECT DESCRIPTION
The project is described as the 2025 Biennial Bridge Review Program. ATS will complete the
review of the Client's 62 structures (37 bridges and 25 culverts). These structures are federally
classified as bridges and included on the National Bridge Inventory (NBI) list for which Structure
Inventory and Appraisal (SI&A) forms are required to be submitted to the Iowa DOT by the Client.
In addition to these structures, there are 17 additional structures to be reviewed (5 bridges and 12
culverts) that are not federally classified as bridges.
The 17 non-NBI structures include:
• Sunnyside and Prescott's Creek Bridges on the Sergeant Road Trail
• 4th Street Canopy Bridge over the Cedar River
• Four Dry Run Creek reinforced concrete box (RCB) culverts under Winn Street,
Tower Park Drive, Kimball Avenue and San Marnan Drive
• Sunnyside Drainageway RCB under San Marnan Drive
• Twin RCB under 500 Block of W. Shaulis Road
• Independence Avenue over Blowers Creek (single RCB with 8 pipe culverts)
• Twin RCB under 1400 Block N. Elk Run Road
• 400 Block E. Airline Highway (small bridge over drainageway)
• Single RCB under Broadway Street / US 218 NB Offramp
• Single RCB under Huntington Road between Edgewood Drive and Ingersoll Road
• Triple RCB under 1600 Block Katoski Drive
• Single RCB under 1400 Block W. Ridgeway Avenue
• DeWitt Road Bridge over Drainage between US 20 and Ranchero Road
This Supplemental Agreement includes FHWA Level 1 Underwater Bridge Inspection for the 8
Cedar River bridges. Inspection is anticipated to begin in June 2026. It is estimated that
inspections will take one week, with a final report completion date of September 20, 2026.
II. SCOPE OF SERVICES
The Scope of Services will encompass and include services, materials, equipment, personnel and
supplies necessary to provide underwater bridge inspection services. The Scope of Services is
further defined by the following tasks:
Docusign Envelope ID: FC03E4DE-304E-838E-81B4-75755378BEB1
AECOM
Page 2
Task 1. Complete an FHWA Level I Underwater Bridge Inspection for the 8 Cedar River bridges
to meet FHWA requirements. Marine Solutions will complete the underwater bridge inspections.
Work elements for the underwater inspection include the following items:
a. Provide a three -person OSHA/FHWA approved dive team that will include a dive tender, an
underwater bridge inspection diver and a registered professional engineer as the team
leader.
b. The dive team will conduct an FHWA Level I underwater tactile inspection of the bridge. A
Level I inspection is classified as a "swim by" inspection detailed enough to detect obvious
major damage or deterioration. This type of inspection will also consist of limited probing of
the substructure and adjacent streambed.
c. The dive team will utilize a surface supplied air package with audio communication from the
dive tender to the underwater bridge inspection diver.
d. Prepare a condensed inspection report on the findings of the FHWA Level I underwater
inspection that will include a narrative on the following topics:
• Comprehensive Report of Deficiencies
• Site Conditions
• Numerical FHWA Condition Rating for the Substructure Units
• Recommended Correction Action
• Dive Log
• Detailed Inspection Notes for the Substructure Units
• Above Surface Photo Log
• Final Inspection Report
III. COMPENSATION
Compensation for the above services will be on an hourly basis in accordance with Part VI of the
original agreement and shall be integrated with the fees in the original agreement. The total
compensation for these services is an estimated fee of Fifty -Four Thousand Two Hundred Dollars
($54,200.00) and will not be exceeded without authorization from the Client.
IV. In all other respects, the obligations of the Client and the Consultant shall remain as specified in
the Professional Services Agreement dated May 19, 2025.
Docusign Envelope ID: FC03E4DE-304E-838E-81B4-75755378BEB1
AECOM
Page 3
IN WITNESS WHEREOF, the parties hereto have executed this Supplemental Agreement No. 1 as of the
dates shown below:
APPROVED FOR CITY OF WATERLOO APPROVED FOR AECOM TECHNICAL
SERVICES, INC.
,-Signed by: �''
By VGA, Perot-St,ln, By: e'E L/, % sktf,eze
"-393E8397B3D3421...
Printed Name: David Boesen Printed Name: Michelle M. Sweeney, PE, PTOE
Title: Mayor Title: Associate Vice President
Date: 6/1/2026 Date: 6/1 /2026
L:\Secure_DCS\Administration\AGREE\SUPPLE\SA1 WAT Underwater Bridge Inspection.docx