Bridges

Crews are replacing a 61-year-old bridge over the San Pedro River with a better bridge – without ever stopping traffic from using the old one.

PHOENIX – Southern Arizona drivers can expect minor delays for the next eight months on State Route 92 in southern Cochise County as crews work to replace a 61-year-old bridge over the San Pedro River.

The bridge will close from 7 a.m.  to 3 p.m. on Monday, Sept. 12, so Arizona Department of Transportation workers can put temporary striping, construction barriers and a traffic signal in place. Drivers will use Palominas and Hereford roads as an alternate.

PHOENIX – When crews completed Interstate 15 through the rugged Virgin River Gorge in 1973, the 29-mile stretch in northwest Arizona was one of the most challenging projects to date in the U.S. interstate system.

Among other projects along this stretch in the past two years, the Arizona Department of Transportation’s $27 million rehabilitation of Virgin River Bridge No. 6 has been challenging as well, not just for those doing the work but for motorists facing lane restrictions.

PHOENIX ‒ The new State Route 89 bridge at Hell Canyon is longer, wider and better able to accommodate commercial traffic between Prescott and Interstate 40 than the 62-year-old span it replaces.

The Arizona Department of Transportation opened the $14.4 million bridge to traffic Thursday, June 23, after 13 months of work.

Continuous improvement is an exciting way of looking at how we do business at ADOT. We look forward to sharing this story with you.

A postcard image takes us back in time to look at the iconic bridge in Cameron as we look at the modern bridge ADOT has created alongside it.

In a little more than a month you’ll be able to drive along the new bridge on I-15 through the Virgin River Gorge in northwest Arizona. Here's what you'll be driving on.

Today we’re taking you on a unique drive through Cameron on US 89 north of Flagstaff.

While the name often leads to a few jokes, the new SR 89 Hell Canyon Bridge will have some heavenly features.

Check out our new video showing how crews place massive girders for the new Hell Canyon Bridge.

Residents will have a more reliable link with Yuma County’s largest employer, Yuma Proving Ground, thanks to a 600-foot bridge ADOT is building across a flood-prone section of US 95.

PHOENIX ‒ Arizona Department of Transportation engineers in Phoenix will get real-time information on the conditions of four interstate bridges in remote northwestern Arizona thanks to technology funded by a $768,000 Federal Highway Administration grant.

To enhance safety and efficiency, ADOT will use the Accelerated Innovation Deployment Demonstration grant to add structural health monitoring systems to the Interstate 15 bridges, embedding sensors on the superstructures that record, analyze and share data.

ADOT works very closely with all of its project partners, including emergency responders, local governments and contractors.

A bridge replacement project on Interstate 10 westbound between Tucson and Benson will require a 67-mile detour from 9 p.m. Tuesday, Nov. 17, to 5 a.m. Wednesday, Nov. 18.

See what the Navajo Bridge looked like in 1928 and how it looks today.

We have an update for you on the Hell Canyon Bridge replacement project that isn’t infernal at all!

ADOT is working to construct a wider bridge while limiting SR 89 traffic impacts during construction.

PHOENIX — While the Arizona Department of Transportation completed interim repairs to the Hell Canyon Bridge in 2013, the agency moved forward with plans to design a new bridge along State Route 89 in Yavapai County that would ultimately replace the aging and narrow bridge that does not meet today’s design standards. Two years later, ADOT will start construction on Tuesday, July 14 on a modernized bridge that will replace the current bridge when completed.

We’ve been following the US 89 Cameron roadway improvement project pretty closely here on the blog.

ADOT has been recognized for its environmental protection efforts while rebuilding the San Pedro Bridge through a sensitive conservation area on State Route 90 east of Sierra Vista.