North Central Projects

U.S. Route 89 Landslide

From the ADOT Blog

Project to rebuild US 89 near Page moves forward
Project to rebuild US 89 near Page moves forward

Feb. 20, 2014

One year after a landslide forced the closure US 89 south of Page, the Arizona Department of Transportation is gearing up to start construction early summer and potentially complete the emergency repair by the end of this year — if there are no environmental, utility or right-of-way hurdles. Full story ...


US 89 update
US 89 update

Jan. 24, 2014

ADOT is continuing its work toward rebuilding US 89 as soon as safely possible and while there's no huge project milestone to share with you at the moment, we thought you might be interested in a quick update. Full story ...


US 89: Archaeological site surveys required

Oct. 17, 2013

Right now, ADOT is evaluating the US89 project area to see if there are any archaeologically significant sites in the right of way. Full story ...


Newly completed US 89 bypass fully open with no restrictions

Oct. 15, 2013

ADOT has completed the fencing along the US 89T corridor to help prevent livestock from crossing the roadway. That means the route is now fully open – nighttime and speed restrictions have been lifted. Full story ...


US 89: Surveys for permits required under Clean Water Act

Sept. 24, 2013

The long-term fix for US 89 will involve cutting back the mountain slope, building a gravity buttress wall for support and constructing the new road. But before crews can begin on all that, there's a lot that has to get done. Full story ...


Newly paved US 89T set to open with restrictions

Aug. 28, 2013

ADOT is set to open the newly paved US 89T tomorrow, Aug. 29, albeit with some restrictions. Until construction and fencing is completed, the roadway will be open only during daylight hours (except for local residents) and there will be a 25 mph speed limit. Full story ...


Work on N20 isn't finished yet

Aug. 16, 2013

While work isn't done yet, we hope you can be patient for a little bit longer as ADOT works to ensure that the route is a safe roadway that motorists will be able to use for years to come. Full story ...


Taking a look at the long-term fix proposed for US 89

July 18, 2013

Last week, we all got a look at the long-term fix being proposed to repair the landslide-damaged stretch of US 89 – it'll involve cutting back the mountain slope and constructing a gravity buttress wall. The repairs, at an estimated cost of $40 million, could take more than two years to complete. Full story ...


Community outreach and US 89

July 16, 2013

Last week, when we shared with you the long-term repair solution that has been proposed for US 89, we explained how experts studied the area for months and put together a comprehensive report that includes a major amount of geological data (seriously, the report is 463 pages). Full story ...


ADOT identifies long-term US 89 repair solution

July 11, 2013

The geotechnical investigation on US 89 (you know – that one we've been blogging about since February) is complete and we're thrilled to share news of the results. Full story ...


Navajo Route 20 is closed for construction

June 17, 2013

Yes, paving on N20 has begun, but drivers shouldn't plan on using the route as a detour until construction is completed later this summer. Full story ...


From Navajo Route 20 to US 89T

June 10, 2013

As you can see in the video above, ADOT and the Navajo Division of Transportation officially broke ground on the Navajo Route 20 paving project yesterday morning. The ceremony marks the start of a project that we've blogged about before. Full story ...


Groundbreaking ceremony set for temporary US 89 detour route

June 7, 2013

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. Full story ...


ADOT works to wrap up US 89 geotechnical investigation

May 29, 2013

Just as construction to upgrade N20 begins, ADOT is wrapping up its geotechnical investigation at the US 89 landslide site. Full story ...


Work on N20 detour to start soon

May 21, 2013

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. Full story ...


US 89: Restoring Mobility

May 3, 2013

Things have come a long way in the two months since a landslide buckled part of US 89 south of Page … Full story ...


US 89: Coordinating, managing the emergency response

April 24, 2013

When a landslide buckled a portion of US 89 back in February, the incident (unsurprisingly) brought many people together to work on restoring mobility to the area ... Full story ...


State Transportation Board approves funding for shorter US 89 detour

April 16, 2013

Good news for drivers who have seen their commute impacted by the US 89 landslide … Last Friday (April 12), during its monthly meeting in Tucson, the State Transportation Board approved funding to pave Navajo Route 20 ... Full story ...


ADOT's geotechnical investigation on US 89 landslide enters final stages

April 11, 2013

We have heard from a lot of people who want to know when US 89 is going to reopen … Full story ...


Transportation Defined: Time Domain Reflectometry

April 9, 2013

You might remember that we blogged about inclinometers back in February – they’re the instruments used to measure slope inclination or movement at specific locations ... Full story ...


Detours offer access to northern Arizona communities, businesses near US 89 closure

April 2, 2013

Even though there's a stretch of US 89 that's not open, the businesses and communities surrounding the closure most definitely are ...
Full story ...


ADOT plans shorter detour for highway closed by landslide south of Page

March 22, 2013

We've got some good news for drivers whose commutes have been impacted by the US 89 landslide ... Full story ...


Work continues on US 89 landslide site

March 21, 2013

Yesterday marked one month since a landslide ripped through a segment of US 89 and buckled more than 150 feet of the pavement … Full story ...


Now that we've got your attention...

March 8, 2013

It would be an understatement to say that we’ve experienced a bit of a surge in our social media audience of late. Those of us who have spent the last few years working to build ADOT’s online network would love to believe that our spontaneous increase in viewers, followers and readers is due solely to our engaging content and commitment to transparency … Full story ...


ADOT granted $2 million in immediate federal aid to investigate US 89 landslide

March 6, 2013

After seeing the photos and video of US 89, it's obvious that a lot of engineering brainpower will be needed to determine the cause of the landslide and what the possible long- and short-term options might be. Seeing the magnitude of the damage might also make you wonder about costs ... Full story ...


New video examines the geotechnical assessments being made on US 89

March 1, 2013

Check out this video. Not only does it give an up-close look of what's happening at the US 89 site, it also provides us with a few new, interesting geotechnical terms, including inclinometers, extensometers, LiDAR and DTM ... Full story ...


New Web page offers the latest US 89 details

Feb. 28, 2013

Wow … we've certainly received a big response to all of the videos, Tweets, blog posts and news releases related to the closure of US 89 south of Page. A huge thank-you goes out to everyone who has helped us spread the word! Full story ...


Transportation Defined: Inclinometers

Feb. 27, 2013

When engineers suspect a slope or embankment might be moving, they can use an inclinometer to see if their hunch is correct … Full story ...


Buckled pavement closes US 89 south of Page

Feb. 21, 2013

By now, many of you have probably already seen photos of US 89 … A 150-foot section of the road "buckled" yesterday morning (Feb. 20) in an area about 25 miles south of Page – the cause of the highway damage may have been a geologic event ... Full story ...