PHOENIX – A study to make improvements to Interstate 10 at the Broadway Curve – one of the most-heavily traveled stretch of freeway in Arizona – is now available for public review and comment.

The Draft Environmental Assessment (EA) for widening 11 miles of Interstate 10 from the Interstate 17 “Split” interchange near Phoenix Sky Harbor International Airport to the Loop 202 interchange in Chandler is now available on the I-10 Broadway Curve webpage, under the Documents tab. The document examines potential environmental impacts associated with the proposed improvements.

Members of the public are encouraged to review the Draft Environmental Assessment and provide input from Friday, Oct. 4, until Nov. 18. The website also lists locations where a copy of the report is available for review.

A public hearing on the Broadway Curve proposal is scheduled for 5 to 8 p.m. Thursday, Oct. 24, at the DoubleTree by Hilton Hotel at 2100 S. Priest Drive in Tempe. The hearing will include presentations at 6 p.m. and 7 p.m. Members of the Arizona Department of Transportation study team will be available to answer questions.

There are several ways to submit comments on the Draft EA:

• Online: i10broadwaycurve.com
• Email: [email protected]
• Phone: 602.501.5505 (Bilingual Project Line)
• Mail: I-10 Broadway Curve Study, c/o ADOT Communications, 1655 W. Jackson St., Mail Drop 126F, Phoenix, AZ 85007 
• In person at the public hearing

I-10 in the Broadway Curve area is a key commerce corridor and has seen increasing levels of traffic in recent years, especially during morning and evening hours. In 2018, I-10 west of State Route 143 carried an average of more than 287,000 vehicles each day.

Proposed improvements being studied include:

• Widening both directions of I-10 to six general purpose lanes and two HOV lanes between the Salt River bridge and US 60.
• Building a collector-distributor road system between Baseline Road and 40th Street to reduce the number of lane changes on the mainline and improve traffic flow.
• Adding a fourth general purpose lane on I-10 from US 60 to Ray Road and maintaining the HOV lane.
• Modifying I-10 connections at SR 143, Broadway Road and US 60 to improve traffic flow.
• Replacing ramps at I-10 interchanges at SR 143 and US 60 with new ramps, including new bridges.
• Adding up to three pedestrian bridges to connect communities.

The study team also is evaluating a no-build option - the condition that would exist if ADOT did nothing, which serves as a comparison.

Comments received during the draft EA period and earlier this year will be included in the Final EA.

If the study receives the necessary approval, construction could begin in early 2021 and would take up to four years to complete.

PHOENIX – Members of the public have until Monday, April 1, to share comments, suggestions and recommendations about potential improvements to Interstate 10 between the Interstate 17 “Split” interchange in Phoenix and Loop 202 Santan Freeway in Chandler, one of the most heavily traveled areas in the Valley. 

About 200 people attended a Feb. 26 Arizona Department of Transportation public information and scoping meeting in Tempe to hear a presentation about the potential improvements and submit comments. All meeting materials presented at the meeting are available on the study homepage at i10broadwaycurve.com under “Public Meetings Documents.”

There are still plenty of ways to provide feedback, including: 

         Online: i10broadwaycurve.com

         Email: [email protected]

         Bilingual Hotline: 602.501.5505

         Mail: ADOT Communications, 1655 W. Jackson St., MD 126F, Phoenix AZ 85007

In partnership with the Federal Highway Administration and Maricopa Association of Governments, the regional planning agency, ADOT is conducting an Environmental Assessment in accordance with the National Environmental Policy Act of 1969 to study 11 miles of I-10 between 24th Street and Ray Road, a stretch that includes the Broadway Curve, which handles more than 40 percent of freeway traffic in the region and sees heavy congestion.

Potential improvements identified through previous studies, including the I-10/I-17 “Spine” Corridor Master Plan, include: an additional general purpose lane and/or additional HOV lane; a collector-distributor road system offering local traffic lanes; and reconstructing the I-10/State Route 143/Broadway Road connections and the I-10/US 60 connection.

Funding for the potential project is allocated through the Maricopa Association of Governments’ Regional Transportation Plan approved by county voters in 2004.

Construction could begin in 2021, if approved.

Comments must be received by April 1 to be included in the official study record.

PHOENIX – As the Arizona Department of Transportation evaluates potential improvements to Interstate 10 between the Interstate 17 “Split” interchange in Phoenix and the Loop 202 Santan Freeway in Chandler, a meeting Tuesday, Feb. 26, will allow the public to get information and provide feedback.

In partnership with the Federal Highway Administration and Maricopa Association of Governments, the regional planning agency, ADOT is studying and designing preliminary concepts for 11 miles of I-10 between 24th Street and Ray Road, a stretch that includes the Broadway Curve, which handles more than 40 percent of freeway traffic in the region and sees heavy congestion.

Potential improvements include: an additional general purpose lane and/or additional HOV lane; a collector-distributor system offering local traffic lanes; reconstructing the I-10/State Route 143/Broadway Road connections and the I-10/US 60 connection; and other related work.

The public can provide input on the I-10 Broadway Curve Study at this open house meeting:

When: 5:30 p.m. to 7:30 p.m. Tuesday, Feb. 26 (presentation at 6 p.m.)

Where: Rio Salado College Conference Center, 2323 W. 14th St., Tempe, AZ 85281

Who: Representatives from ADOT’s I-10 Broadway Curve Study Team will be available to hear comments and answer questions.

Funding for the potential project is allocated through the Maricopa Association of Governments’ Regional Transportation Plan approved by county voters in 2004.

Construction could begin in 2021.

For those unable to attend, there are still plenty of ways to provide feedback, including: 

• Online: i10broadwaycurve.com
• Mail: ADOT Communications, 1655 W. Jackson St., MD 126F, Phoenix AZ 85007
• Email: [email protected]
• Bilingual Hotline: 602.501.5505

Comments must be received by April 1 to be considered part of the scoping process for the I-10 Broadway Curve Study.