Request Council approve an Intergovernmental Agreement (IGA) with the Arizona Department of Transportation (ADOT) establishing maintenance responsibilities for landscaping and roadways near Interstate 10 and State Route 303.

Approve an Intergovernmental Agreement with the State of Arizona establishing maintenance responsibilities for landscaping and roadways near Interstate 10 and State Route 303 and associated Budget Amendments. (Hugh Bigalk, P.E., City Traffic Engineer)

The approval of the IGA will have an impact to city maintenance operations.  The anticipated annual expenses have been illustrated in Table 1.
 

Table 1: Anticipated Annual Maintenance Costs of Intergovernmental Agreement
Item	Total Area (Square Feet)	Cost per Square Foot	Total
Annual Landscaping Maintenance	379,650	$0.30	$113,894
Annual Sidewalk Maintenance (3% of Total IGA Area)	134,030	$100.00	$44,676
Total Annual Cost			$158,570

Additional landscaping maintenance is anticipated to be $113,894 for the Parks Department and additional sidewalk maintenance is estimated at $44,676 for the Engineering Department, assuming replacement of 3% of the total sidewalk area per year.  A budget amendment increasing the P&R ongoing maintenance budget in the amount of $113,900 is required. Sidewalk maintenance costs are not anticipated in FY2023 - no budget amendment is required.
 

As each interchange or groups of interchanges have been developed by ADOT along Interstate 10 and State Route 303, an IGA has been executed between ADOT and the city defining responsibility for the pavement, sidewalks, curbs, traffic signals, litter removal, and landscaping at the interchanges. 

The purpose of this IGA is to consolidate several individual IGAs into one document and to clarify maintenance responsibilities between ADOT and the city.  ADOT has experienced challenges in maintaining a high level of service for items such as landscaping.  They continue to maintain the landscaping but at a decreased number of times per year.

This IGA would shift some responsibilities from ADOT to the city in order to provide a higher standard of care compared to today.  Primarily, landscaping maintenance and minor sidewalk maintenance along the arterial street shift from ADOT to the city.  It does not shift any maintenance responsibility along the freeway ramps or the mainline.  The calculated area for both landscaping and sidewalk is illustrated in Table 2.
 

Table 2: Additional Maintenance Responsibility from ADOT to the City
Item	Landscaping Area (Square Feet)	Sidewalk Area (Square Feet
Citrus Road & I-10	62,900	18,360
Sarival Avenue & I-10	31,670	17,390
Estrella/PebbleCreek Parkway & I-10	27,600	14,940
Bullard Avenue & I-10	9,300	10,910
Litchfield Road & I-10	6,360	11,970
SR 303 & Van Buren Street	129,470	21,150
SR 303 & McDowell Road	7,780	12,000
SR 303 & Thomas Road	21,780	0
SR 303 & Indian School Road	49,710	18,170
SR 303 & Camelback Road	33,080	9,140
Total Area	379,650	134,030

Items such as concrete pavement, retaining walls, fencing in the vicinity of the interchange would remain the responsibility of ADOT.  Landscaping maintenance, sidewalks, litter removal, weed removal, arterial street pavement marking and signs would become the responsibility of the city. ADOT has also informed us that they require entering into such agreements with all municipalities before extending or improving highways in those jurisdictions.