Roadway Development Impact Fee Update
• Service Areas• Land Use Assumptions• Consumption Calculation• Level of Service• Cost Attributable to Development• Projects Plan
SERVICE AREAS
Service Areas
Proposed – 7 areasExisting -10 areas
Added Mt. Lemmon
Service Areas• Ensure project nexus/benefit• Large enough to support projects
Altar Valley had very little development: $718,000 collected in 22 years/$33,000 per year. Not enough to fund improvements.
Formerly Altar Valley
Existing
Proposed
Formerly Altar Valley
SOUTH
WEST
LAND USE ASSUMPTIONS
Growth Assumptions Population and Employment
• PAG Transportation Improvement Program 2017-2022
• US Census Bureau
• AZ Department of Economic Security
• Pima County Housing Permits
• PAG Regional Mobility and Accessibility Plan
• UA Economic and Business Research Center
Development Activity2015-2018
Hot development areas
Routes from growth areas to employment
Population Growth
2017-2022by TAZ, per square mile
Employment Growth
2017-2022by TAZ, per square mile
CONSUMPTION CALCULATION
Amount of travel
Cost to Provide Capacity
Cost per Residential
Unit
1 2 3
Travel per Unit• Measured in Vehicle Miles of Travel
• Based on peak hour – highest demand/stress on road network
10.6 mi
Amount of Travel Per Residential Unit
Trips per House (PM Peak) 0.99 ITE Trip Generation
Average Trip Length (mi) 10.7 US Census NHTSVehicle-Miles Traveled in peak 10.6 # trips x Length
Amount of travel
Cost to Provide Capacity
Cost per Residential
Unit
All Roads
• FHWA - 86% of Travel on Arterials/Collectors (2017)• AASHTO - 80% of Travel on Arterials/Collectors• Study assumes 80% • Arterial/Collector Travel = 10.6 mi x 80% = 8.5 mi
Travel per Unit Arterials/Collectors
8.5 mi
Amount of travel
Cost to Provide Capacity
Cost per Residential
Unit
All Arterials/Collectors
• Some travel is on City or ADOT roadways• County is very spread out, with long arterial trips
County benefit areas > 1,900 square milesAll Incorporated areas = 410 square miles (20% of total)
• Assumed 50% of travel on County roadways (conservative)• Travel on County Arterials/Collectors: 8.5 mi x 50% = 4.2 mi
Travel per Unit County Arterials/Collectors
4.2 mi
Amount of travel
Cost to Provide Capacity
Cost per Residential
Unit
County only
Example 1: From Tucson Estates and further west to Tucson International Airport
Amount of travel
Cost to Provide Capacity
Cost per Residential
Unit
Travel per Unit County Arterials/Collectors
12.2 miles
7.9 miles
6.9 miles
Example 2: From the Foothills, Vail, and Corona de Tucson to Raytheon
Amount of travel
Cost to Provide Capacity
Cost per Residential
Unit
Travel per Unit County Arterials/Collectors
12.2 miles
8.3 miles
9.8 miles
Example 3: From north and northeast to Williams Center, Park Place
Amount of travel
Cost to Provide Capacity
Cost per Residential
Unit
Travel per Unit County Arterials/Collectors
4.5 miles
8.4 miles
Cost to Provide CapacityPer Lane-Mile of Roadway
Amount of travel
Cost to Provide Capacity
Cost per Residential
Unit
Construction Cost = $2M (2019 dollars) Not adjusted for inflation (2029 = $2.6M)
+ Non-construction costs* = $1M
(50% of construction per PAG RSC Study)
=Total Cost = $3M
*Non-Construction Costs include Right of Way, Planning, Design, Construction Management)
Project Agency YearLength
(mi)Lanes
Total Lane Miles
Construction Cost
Construction Cost/Lane-mi
Tangerine Rd, Dove Mountain Blvd to La Cañada Dr
Marana/Oro Valley/Pima County
2016 5 4 20 50,400,000$ 2,520,000$
Grant Rd, Stone Ave to Park Ave Tucson 2016 1.2 6 7.2 14,480,000$ 2,011,111$
Valencia Rd, Wade Rd to Ajo Wy Pima County 2018 3.2 4 12.8 20,224,000$ 1,580,000$
Cortaro Farms Rd Pima County 2017 1.4 4 5.6 9,954,000$ 1,777,500$ Valencia Rd Extension, Houghton Rd to Old Spanish Tr
Rocking K/Pima County
2018 2.4 2 4.8 7,900,000$ 1,645,833$
Magee Rd, La Cañada Dr to Oracle Rd Pima County 2013 1.2 4 4.8 9,975,000$ 2,078,125$
Houghton Rd, UPRR to I-10 Tucson 2018 1.1 6 6.6 7,713,000$ 1,168,636$ Broadway Blvd, Cmo Seco to Houghton Rd
Tucson 2018 2 4 8 13,638,000$ 1,704,750$
Sabino Canyon Rd Extension, Tanque Verde Rd to Kolb Rd
Tucson 2015 0.6 4 2.4 8,187,000$ 3,411,250$
Hughes Access Rd, Nogales Hwy to Alvernon Wy
Pima County 2015 2.8 2 5.6 6,661,000$ 1,189,464$
77.8 149,132,000$
1,916,864$
Totals
Average Construction Cost per Lane Mile
Cost to Provide CapacityPer Lane-Mile of Roadway
Amount of travel
Cost to Provide Capacity
Cost per Residential
Unit
Cost to Provide CapacityPer Vehicle Mile
Amount of travel
Cost to Provide Capacity
Cost per Residential
Unit
Hourly Capacity = 960 vehicles/lane (Level of Service D)
Source: Florida DOT Capacity Tables
Cost per VMT = $3,000,000 / 960 vehicles/lane =
$3,125 per vehicle mile
Cost Per Residential Unit Amount of travel
Cost to Provide Capacity
Cost per Residential
Unit
• Base Fee = $3,125 per mile x 4.2 miles/home = $13,128
• Residential Adjustment Factor 65%Adjusts for non-residential and multi-purpose trips
Raw Residential Fee = $13,125 x 65% = $8,592
• RTA Credit = $69 • Amount paid per home for Pima County Impact Fee projects in RTA• Based on sales tax paid on the materials to build a house
• Net Residential Fee = $8,523
New vs Existing Fees
Current Fee assumes 3% annual increase in ENR CCI (same as 2013-2018 rate)
• New fee and existing fee nearly same after 10 years• Proposed fees – no annual inflation adjustment
• Existing fees increased 3% per year per Construction Cost Index.
• Project budgets based on 2015-18 bids, but new fee not indexed.
• Construction costs will be up to 30% higher by 2025 due to inflation.
$-
$1,000
$2,000
$3,000
$4,000
$5,000
$6,000
$7,000
$8,000
$9,000
$10,000
2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029
Current Fee Proposed Fee
LEVEL OF SERVICE
Level of Service
A.R.S. 11-1102 (V.)(10.)• “Service Unit” means a standardized measure of
consumption, use, generation or discharge attributable to an individual unit of development...
• calculated using data specific to the service area in which the facility will be located and…
• pursuant to generally accepted engineering or planning standards for a particular category of necessary public services or facility expansions.
Level of Service
Rural Minor Collector 2003 Roadway Design Manual
4-Lane Urban Arterial2003 Roadway Design Manual
• Roadway design largely unchanged for 15+ years
• Consistent for both Developer-led or County-led projects
• Travel Lanes• Drainage• Shoulders• Medians• Sidewalks
(urban areas)
Level of Service
Major Urban Collector (2006 Subdivision Street Standards)
Major Rural Collector (2006 Subdivision Street Standards)
COST ATTRIBUTABLE TO DEVELOPMENT
Cost Attributable to DevelopmentMajor Roadway Projects
Impact Fees pay for portion of added capacity used by new development
Existing Capacity15,000
Added Capacity20,000
Existing Use10,000
Unused6,000
New Development
4,000
Existing Use15,000
Existing Capacity (veh/day) 15,000Future Capacity (veh/day) 35,000Added Capacity (35K-15K) 20,000
Current Traffic Volume (veh/day) 25,000Future Traffic Volume (veh/day) 29,000New Development Volume (29K-25K) 4,000
% of Added Capacity from Development 20%Project Cost $10,000,000 Cost Attributable to Development $2,000,000
• Traffic Signal ITS improvements add 10% capacity (based on City of Los Angeles allowance for ITS improvements)
• Turn lanes add 10% of roadway capacity (from FDOT Capacity Tables)
• 100% of 10% capacity increase is consumed by new development in 10 year IIP(VMT growth = 1.1% per year x 10 years = 11.0%)
Cost Attributable to DevelopmentTraffic Signal, Intersection, Turn Lanes
PROJECTS PLAN
• Roadway Widening• New Roadways• Intersections• Traffic Signal ITS• Turn Lanes• Right of Way Purchase
Impact Fee Projects
Roadway Widening
70%
New Roads22%
Intersections4%
ITS Signals2%
Turn Lanes2%