Study Area

Broadway Rd

Roeser Rd

University Dr

Broadway Rd

Southern Ave

Baseline Rd Baseline Rd

Guadalupe Rd

Grove Pkwy

Elliot Rd

Warner Rd

Ray Rd

Chandler Blvd Chandler Blvd

Knox Rd

Ray Rd

S 24th St

S 16th St

S 48th St

S 40th St

S 32nd St

S 48th St

S 40th St

Priest Dr

Hardy Dr

Rural Rd

Mill Ave

Priest Dr

Rural Rd

Kyrene Rd

Phoenix

Tempe

Chandler

Guadalupe

South Mountain Park

Salt River

Western Canal

Map not to scale

Study Area

LEGEND

PreviousStudies

These previous studies have informed the current I-10 Broadway Curve Study. Some of the I-10 Broadway Curve proposed improvements were ini�ally iden�fied in these earlier studies.

2009 I-10 Corridor Improvement Study

2014 I-10/I-17 Maricopa Associa�on of Governments “Spine” Corridor Master Plan

2014 I-10 Near-Term Improvement Study

2019 I-10 Broadway Curve Study

What isNEPA?

The Na�onal Environmental Policy Act of 1969 (NEPA) requires an analysis of impacts to the natural and human environment for all federally funded projects, and a descrip�on of ways to avoid, minimize or mi�gate these impacts. NEPA’s goal is to protect, restore, and enhance the natural and human environment while engaging the public and stakeholders through the decision-making process.

ADOT was granted NEPA assignment in April 2019.

The current study is known as an Environmental Assessment (EA) and is required by NEPA.

Purposeand Need

The Preferred Alterna�ve would address the needs in the study area by:

• Maintaining the current func�onality and mobility of the I-10 corridor

• Providing regional mobility and access for economic centers

• Accommoda�ng current and planned system linkages for bus services using I-10

The purpose of the I-10 Broadway Curve project is to improve traffic opera�ons and reduce conges�on on I-10 while maintaining regional mobility and access for economic centers and providing an improved transporta�on system linkage.

StudyOutcomes

The study outcome is for ADOT to choose an alterna�ve. There are two poten�al alterna�ves: • Preferred Alterna�ve • No Build Alterna�ve – The Condi�on that would exist if ADOT did nothing (used for comparison).

After the comment period for the Draft EA, a Final EA will be prepared that will respond to all comments and identify ADOT’s selected alternative.

NEW COLLECTOR-DISTRIBU

TOR RO

ADS

1 H

OV

LAN

E +

4 G

ENER

AL P

URP

OSE

LAN

ES +

AU

XILI

ARY

LAN

ES

2 HOV LANES + 6 GENERAL PURPOSE LANES + AUXILIARY LANES

60

14310

10

17

24TH

ST

16TH

ST

32N

D S

T

40TH

ST

UNIVERSITY DR

BROADWAY RD

SOUTHERN AVE

BASELINE RD

GUADALUPE RD

ELLIOT RD

WARNER RD

RAY RD

CHANDLER BLVD

SALT RIVERBRIDGE WIDENING

SR143 INTERCHANGE RECONSTRUCTION & NEW HOV DIRECT CONNECTOR I-10 TO SR143

NEW BROADWAY RD BRIDGE

NEW 48TH ST BRIDGE

PreferredAlterna�ve

Exis�ng Freeway

2 HOV Lanes +6 General Purpose Lanes +Auxiliary Lanes

1 HOV Lane +4 General Purpose Lanes +Auxiliary Lanes

New Collector - Distributor RoadsEB SR143 to Baseline Rd. & WB Baseline Rd. to SR143 & 40th St

Widened Facility(to connect to I-10 improvements)

Poten�al New Pedestrian Bridge

EnvironmentalResources

The following environmental resources have been studied as part of the Dra� EA: • Air Quality • Biological Resources • Cultural Resources • Drainage and Floodplain Considera�ons • Hazardous Materials • Land Ownership, Jurisdic�on, and Land Use • Noise • Sec�on 4(f) Resources • Secondary and Cumula�ve Impacts • Social and Economic Considera�ons • Title VI and Environmental Jus�ce • Traffic and Transporta�on • U�li�es • Visual Resources • Wetlands and Waters of the U.S.

LEGENDProposed Roadways

Approximate Study Area Boundary

Proposed BridgesExisting BridgesProposed Trails

Scale in Miles

0.25 0.50

4 + 1 HOV + 1 AUX 6 + 2 HOV + 3 CD

P R O P O S E D

E X I S T I N G

143

Hohokam Expy.

Broadway Rd.

52nd

St.

55th St.48th

St.

Pries

t Dr.

San Francisco Canal

University Dr.

6 + 2 HOV + 1 AUX

Eastbound Lanes

P R O P O S E DE X I S T I N G

4 + 1 HOV + 1 AUX

14th St.Westbound Lanes

Eastbound Lanes

3 + 1 HOV + 2 AUX

6 + 2 HOV + 2 CD

P R O P O S E DE X I S T I N G

Westbound Lanes

4 + 1 HOV + 2 AUX 6 + 2 HOV + 3 CD

P R O P O S E D

E X I S T I N G

ApproximateStudy AreaBoundary

KEY MAP

Not to Scale

New Trail Bridge

SR 143 ProposedImprovements

LEGENDProposed Roadways

Approximate Study Area Boundary

Proposed BridgesExisting BridgesProposed Trails

Scale in Miles

0.25 0.50

New TrailNew Trail New Trail Bridge

48th

St.

Pries

t Dr. Ha

rdy D

r.

Baseline Rd.

Southern Ave.

60

Eastbound Lanes

3 + 1 HOV + 2 AUX

6 + 2 HOV + 2 CD

P R O P O S E DE X I S T I N G

Eastbound Lanes

3 + 1 HOV + 3 CD

4 + 1 HOV + 4 CD

P R O P O S E DE X I S T I N G

Eastbound Lanes

3 + 1 HOV + 1 AUX6 + 1 HOV

P R O P O S E DE X I S T I N G

Westbound Lanes

6 + 1 HOV 6 + 2 HOV + 3 CD

P R O P O S E D

E X I S T I N G

ApproximateStudy AreaBoundary

KEY MAP

Not to Scale

Westbound Lanes

3 + 1 HOV + 3 CD 4 + 1 HOV + 4 CD

P R O P O S E D

E X I S T I N G

Westbound Lanes

5 + 1 HOV + 1 AUX

P R O P O S E D

3 + 1 HOV + 1 AUX

E X I S T I N G

New Trail Bridge

Western Canal

Highline Lateral Canal

Aven

ida d

el Ya

qui

ProposedImprovementsat US 60

Collector-Distributor(C-D) Roads

MAINLINE

C – D ROAD

NoiseMi�ga�on

• A noise analysis was conducted to determine loca�ons where noise levels are projected to exceed state and federal standards.

• As a result, seven new proposed noise barriers are recommended, where feasible and reasonable, to provide noise reduc�on.

Broadway Rd

Roeser Rd

University Dr

Broadway Rd

Southern Ave

Baseline Rd Baseline Rd

Guadalupe Rd

Grove Pkwy

Elliot Rd

Warner Rd

Ray Rd

Chandler Blvd Chandler Blvd

Ray Rd

S 24th St

S 16th St

S 48th St

S 40th St

S 32nd St S 48th St

S 40th St

Priest Dr

Hardy Dr

Rural Rd

Mill Ave

Priest Dr

Rural Rd

Kyrene Rd

South Mountain Park

Salt River

Western Canal

EX-2

EX-1

NB-6 NB-7

NB-5

NB-4

NB-3

NB-2

NB-1

Phoenix

Tempe

Chandler

Guadalupe

Map not to scale.

LEGEND

EX-1

NB-1

Proposed Lanes

I-10, Salt River to 40th Street

I-10, 40th Street to 48th Street

EXISTINGI-10 MEDIANWESTBOUND EASTBOUND

12’C – D Lanes

12’General Purpose

Lanes

12’General Purpose

Lanes

12’Auxiliary

Lane12’

HOV Lanes12’

HOV Lanes

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lder

EXISTINGI-10 MEDIANWESTBOUND EASTBOUND

12’Auxiliary

Lane

12’Auxiliary

Lane

12’General Purpose

Lanes

12’General Purpose

Lanes12’

HOV Lanes12’

HOV Lanes

Shou

lder

Shou

lder

Shou

lder

Shou

lder

PRELIMINARYCONCEPTS

Not to Scale

Proposed Lanes

I-10, Broadway Road to Alameda Drive

I-10, Alameda Drive to US-60

EXISTINGI-10 MEDIANWESTBOUND EASTBOUND

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lder

4’

12’C – D Lanes

12’General Purpose

Lanes

12’General Purpose

Lanes12’

HOV Lanes12’

HOV Lanes12’

C – D Lanes

Shou

lder

EXISTINGUS-60 HOV RAMP

WESTBOUND EASTBOUND

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lderShou

lder

Shou

lder

Shou

lder

Shou

lder

12’C – D Lanes

12’C – D Lanes

12’General Purpose

Lanes

12’General Purpose

Lanes

12’HOVLane HOV Lanes

12’HOVLane

PRELIMINARYCONCEPTS

Not to Scale

Proposed Lanes

I-10, US-60 to Baseline Road

I-10, Baseline Road to Elliot Road I-10, Elliot Road to Ray Road

Shou

lderSh

ould

er

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lder

Shou

lder

EXISTINGI-10 MEDIAN

US-60RAMP W-E

WESTBOUND EASTBOUND

12’C – D Lanes

12’C – D Lanes

12’General Purpose

Lanes

12’General Purpose

Lanes

12’HOVLane

12’HOVLane

PRELIMINARYCONCEPTS

Not to Scale

EXISTINGI-10 MEDIANWESTBOUND EASTBOUND

Shou

lder

Shou

lder

Shou

lder

Shou

lder

11’Auxiliary

Lane

11’Auxiliary

Lane

11’General Purpose

Lanes

11’General Purpose

Lanes

11’HOVLane

11’HOVLane

EXISTINGI-10 MEDIAN

WESTBOUND EASTBOUND

Shou

lder

Shou

lder

Shou

lder

Shou

lder

11’Auxiliary

Lane

11’Auxiliary

Lane

11’General Purpose

Lanes

11’General Purpose

Lanes

11’HOVLane

11’HOVLane

EA ScopingProcess

PROGRESSTO DATE

Early2019

2020 2020-24

Draft EA andPublic Hearing YES

NO

ProjectDevelopment

No Build

Design andConstructionADOT Determines

if FONSI* Issued

*Finding Of NoSignificantImpact

2020Late2019

For the Study…• Incorporate comments into Final EA• Prepare Final EA• ADOT will determine if Finding of No Significant Impact

(FONSI) is issued

Next Steps