CORRECTED 05182026_FINAL_FIRST_AMENDMENT_TT0633_SOUTHERN_AVE_IMPROVEMENTS_W_EXHIBIT.PDF

Maricopa County — Formal (2026-06-24)

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FIRST AMENDMENT TO THE INTERGOVERNMENTAL AGREEMENT 
BETWEEN MARICOPA COUNTY AND THE CITY OF PHOENIX 
FOR IMPROVEMENTS TO SOUTHERN AVENUE 
FROM 51ST AVENUE TO 37TH LANE 
(TT0633) 
(C-64-23-173-X-01) 
This First Amendment to the Intergovernmental Agreement for Improvements to Southern 
Avenue from 51st Avenue to 37th Lane (First Amendment) is entered into by and 
between the Maricopa County, a political subdivision of the State of Arizona (County), 
and the City of Phoenix, a municipal corporation (City). The County and the City are 
collectively referred to herein as the Parties or individually as a Party.   
STATUTORY AUTHORIZATION 
1.
The County is authorized, pursuant to Arizona Revised Statues (A.R.S.) §§ 11-
251 and 28-6701 et seq. to layout, maintain, control, and manage public roads
within the County.
2.
The City is authorized, pursuant to A.R.S. §§ 9-240 and 9-276 et seq. to layout
and establish, regulate, and improve streets within the City, and to enter into this
Agreement.
3.
Public agencies are authorized, pursuant to A.R.S. § 11-951 et seq., to enter into
Intergovernmental Agreements for the provision of services or for joint or
cooperative action.
BACKGROUND 
4.
The Parties previously entered into an Agreement (C-64-23-173-X-00), recorded
at Maricopa County Recorder No. 20220890402 (2022 Agreement), to improve
Southern Avenue from 51st Avenue to 37th Lane, including, asphaltic concrete
paving with a raised median, bike lanes, curb and gutter, sidewalks, bus bay, ITS
conduit, traffic signals, street lighting, and new storm drains (Project). The
Agreement was effective on December 7, 2022, the date it was approved by the
Maricopa County Board of Supervisors.
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5.
On October 29, 2024, the Maricopa County Board of Supervisors approved an IGA 
(C-64-25-039-XX-00) (2024 IGA) between the County and the City of Phoenix for 
the operation and maintenance of the storm drain on Southern Avenue, between 
51st Avenue and east of 46th Avenue.
6.
The Parties desire to further amend the 2022 Agreement, through this First 
Amendment, to document schedule updates, cost sharing, and additional 
responsibilities not specified in the 2022 Agreement.
NOW, THEREFORE, in consideration of the foregoing and the covenants herein set forth, 
the Parties agree as follows: 
AMENDMENT 
7.
The following shall replace Paragraph 8 of the 2022 Agreement, to read:
8.
The estimated total Project Costs are as follows:
8.1 
Design: 
$1,784,118 
8.2 
Right of Way Acquisition: 
$684,274 
8.3 
Utility Relocation: 
$2,686,687 
8.4 
Construction: 
$25,636,736 
8.5 
Construction Management: 
$3,000,000 
Total Cost: 
$33,791,815 
8.
The following shall replace Paragraph 9 of the 2022 Agreement, to read:
9.
The estimated total Project Cost is currently $33,791,815 based on FY2025
dollars for design and construction.
9.
The following shall replace Paragraph 10 of the 2022 Agreement, to read:
10.
The Project construction costs will be split equally between the Parties. The
City will begin a five-year repayment plan for its cost share beginning on
July 1, 2026. Payment is currently estimated at $3,233,082 each fiscal year
and ends July 1, 2030, once the final payment is received.
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10.
The following shall replace Paragraph 11 of the 2022 Agreement, to read:
11.
The Project design began in the fiscal year 2021 and is expected to reach:
11.1 
Sealed submittal: February 2026 
11.2 
Advertise for Construction: March 2026 
11.3 
Construction Start: July 2026  
11.4 
Construction Complete: November 2027 
10. 
Paragraph 13 of the 2022 Agreement shall now include County Responsibilities:
13.11 The County’s Contractor shall remove and install all underground signal
equipment. 
11. 
The following shall replace Paragraph 14.6 of the 2022 Agreement, to read:
14.6 Upon completion and final acceptance of the Project construction by the
City, the City will accept responsibility for all permitting, operation, 
maintenance, and traffic control for the Project, including all roadway 
improvements and traffic signal infrastructure, including underground and 
above-ground components, until the City’s annexation process is complete.  
12. 
Paragraph 14 of the 2022 Agreement shall now include City Responsibilities:
14.8 Provide all above ground signal equipment, complete the installation of the
new above ground equipment, complete the removal of existing above 
ground signal equipment, test the new signals and assume operations and 
maintenance. All signal equipment and installation shall conform to City of 
Phoenix Traffic Signal Standards and Specifications, including approved 
controllers, detection systems, poles, signal heads, and communication 
devices. 
13.
Both Parties agree the signal equipment provided by the City will account towards
the cost sharing contribution, as reflected in the City’s annual payment in
Paragraph 8 of this First Amendment and Exhibit A, which is attached to this
Amendment and incorporated by reference.
14.
All other conditions of the 2022 Agreement not modified by this First Amendment
shall remain in full force and effect.
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15. 
This First Amendment shall become effective as of the latter of the date it is 
approved by the Maricopa County Board of Supervisors and the date it is attested 
to by the City Clerk of the City of Phoenix.  
 
16. 
This First Amendment is subject to cancellation pursuant to A.R.S. §38-511. 
 
 
End of Amendment - Signature Page Follows 
 
 
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IN WITNESS WHEREOF, the Parties have executed this Amendment. 
CITY OF PHOENIX, a municipal corporation 
Ed Zuercher, City Manager 
Briiana Velez, P.E. 
Street Transportation Director 
Attest by: 
Denise Archibald 
City Clerk 
Jun 17, 2026 
Date 
Jun 18, 2026 
Date 
APPROVAL OF CITY ATTORNEY 
The foregoing First Amendment has been reviewed pursuant to A.RS. § 11-952 by the 
undersigned Attorney, who has determined that it is in proper form and within the powers and 
authority granted to the City Council under the laws of the State of Arizona. 
APPROVED AS TO FORM: 
Julie M. Kriegh, City Attorney 
B 
Karen L. Stillwell 
Assistant Chief Counsel 
DJ'B 
Jun 18, 2026 
Date 
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IN WITNESS WHEREOF, the Parties have executed this Amendment. 
 
 
 
MARICOPA COUNTY 
 
 
Recommended by: 
 
 
 
 
 
Jesse Gutierrez, P.E. 
Date 
Transportation Director 
 
 
 
 
Approved and Accepted by: 
 
 
 
 
 
 
 
 
 
Chair 
Date 
 
 
Board of Supervisors 
 
 
 
Attest by: 
 
 
 
 
 
 
 
 
 
Clerk of the Board 
Date 
 
 
 
 
 
APPROVAL OF DEPUTY COUNTY ATTORNEY 
 
The foregoing First Amendment has been reviewed pursuant to A.R.S. §11-952 by the 
undersigned Deputy County Attorney, who has determined that it is in proper form and within the 
powers and authority granted to the Board of Supervisors under the laws of the State of Arizona. 
 
 
 
 
 
Deputy County Attorney 
Date 
 
Docusign Envelope ID: B02A5AD0-4BA0-8FC0-83E6-8B1B1EF9581B
5/19/2026
5/19/2026

EXHIBIT A
Cost Sharing
Description
Cost
Design
$1,784,118
ROW Acquisition
$684,274
Utility Relocation
$2,686,687
Construction
$25,636,736
Includes Signal Cost
Construction Management
$3,000,000
Total Project cost Estimate
$33,791,815
Includes Signal Cost
COP and MCDOT 50/50 share
$16,895,908
Signal Cost Estimate
39th Ave
$210,400
41st Ave
$123,000
43rd Ave
$279,800
51st Ave
$117,300
Total Signal Equipment Estimate
$730,500
COP and MCDOT 50/50 Share
$365,250
MCDOT Total Cash Flow
$16,895,908
COP Total Cash Flow
$16,165,408
Plus $730,500 Signal Equipment
COP Yearly Payment
$3,233,082
Docusign Envelope ID: B02A5AD0-4BA0-8FC0-83E6-8B1B1EF9581B