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01/25/2026

PODCAST: Looking ahead to Southern Arizona projects for 2026

In this 10-minute episode of On the Road With ADOT, Public Information Officer Garin Groff discusses Southern Arizona improvements that are starting, continuing and finishing in 2026, including major upgrades for the Tucson area.
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Two steel bridges with arched supports and railings cross over a dry, rocky landscape with sparse vegetation under a cloudy sky.
01/21/2026

Salt River Canyon Bridge: Get your steps in while seeing Arizona’s beauty

The 1934 US 60 Salt River Canyon Bridge still exists - and pedestrians can still walk on it.
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On the Road With ADOT logo
01/18/2026

PODCAST: The partnership driving Phoenix-area freeway improvements

The Maricopa Association of Governments' Chief Transportation Officer returns in this week's episode to discuss how Proposition 400 has shaped the region's success through projects such as the recently completed I-10 Broadway Curve improvement, the Loop 202 (South Mountain Freeway), Loop 303 (Estrella Freeway) and State Route 24 (Gateway Freeway).
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Popular blog articles

06/07/2013

Groundbreaking ceremony set for temporary US 89 detour route

Marking months of planning and collaboration, the Navajo Division of Transportation and ADOT are ready to officially break ground on the Navajo Route 20 paving project.
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Arizona Motor Vehicle Crash facts Cover 2012
06/06/2013

Annual report shows that motor vehicle crash fatalities in Arizona down slightly in 2012

ADOT’s yearly Motor Vehicle Crash Facts report shows that 823 people lost their lives in crashes on state and local roadways in Arizona in 2012.
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06/04/2013

South Mountain community forums provide opportunity to comment on proposed freeway

Got an opinion on the proposed South Mountain Freeway, but couldn’t make it to last month’s daylong public hearing? Don’t worry. There are still plenty of opportunities to give us your feedback, including a series of community forums that starts tonight.
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05/31/2013

Geotechnical section plays important role in roadway and structural design

We know you... You’ve been following our US 89 videos and blog posts since the landslide occurred back in February. You know all about the geotechnical investigation happening at the site – by now, you’re practically an expert.
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A blue metal storage cabinet with multiple open drawers stands on a concrete floor in an industrial setting. Several flat cases are propped against the wall nearby.
05/30/2013

ADOT lab performs tests on dirt and rocks

ADOT’s Soil and Aggregate lab is an interesting place, especially if you like rocks and dirt as much as we do
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05/29/2013

ADOT works to wrap up US 89 geotechnical investigation

Just as construction to upgrade N20 begins, ADOT is wrapping up its geotechnical investigation at the US 89 landslide site…
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05/22/2013

CMAR method is beneficial for certain projects

Typically, many ADOT projects follow a common course: Design – Bid – Build. That means ADOT (or a consulting engineer working for the department) designs the project, solicits bids and then awards a contract to the lowest responsive and responsible bidder to build the project.
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05/21/2013

Work on N20 detour to start soon

Drivers who have been impacted by the closure on US 89 might be happy to know that work is beginning on Navajo Route 20… That means crews soon will start paving the mostly dirt road so it can (in a few months) serve as an interim detour route until repairs are finished on US 89.
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SR 24 construction
05/17/2013

Work continues on SR 24 in Mesa

When construction wraps up on SR 24 later this year in southeast Mesa, the new freeway will span one mile between Loop 202 and Ellsworth Road. Known also as the Gateway Freeway, SR 24 certainly will help alleviate traffic congestion in the area. However, that’s not the only reason why this project is valuable to the East Valley...
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05/16/2013

Defining bridge inspection terms

You may have heard the terms “structurally deficient” or “functionally obsolete” in reference to bridges …
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