‘Structurally deficient’ bridge over I-17 repaired using new technology

Jul 26, 2017, 6:13 AM
The 19th Avenue bridge over Interstate-17, cited in a national safety report as “structurally def...
The 19th Avenue bridge over Interstate-17, cited in a national safety report as “structurally deficient,” has since been repaired. (Photo by Tyler Fingert/Cronkite News)
(Photo by Tyler Fingert/Cronkite News)

PHOENIX – The Interstate 17 bridge that crosses over 19th avenue was among more than 200 bridges in Arizona considered “structurally deficient” in a national safety report but has since been repaired, an ADOT spokesman said.

The designation does not mean the bridges aren’t safe and Arizona overall gets high marks for bridge safety. About three percent of Arizona’s 8,154 bridges are structurally deficient, according to the safety report released earlier this year.

The I-17 bridge over 19th Avenue is the most traveled of the 214 structurally deficient bridges in Arizona. Drivers cross an average of 123,000 times a day.

“It had damaged girders from over-height vehicles striking underneath the bridge,” said Doug Nintzel, an Arizona Department of Transportation spokesman. “Structurally deficient did not mean it was an unsafe bridge.”

“We have a great deal of confidence in our bridges, but you always have to be cautious.”

Arizona is doing better compared to other states, ranking 48 out of 51 in states with structurally deficient bridges.

More than 56,000 bridges nationwide are considered structurally deficient, according to the report from the American Road & Transportation Builders Association.

“If it’s defined as structurally deficient, it means that it’s probably in the plan in the near future to be remedied or to be modified,” said Barzin Mobasher, a civil engineering professor at Arizona State University. “But it shouldn’t stop people from using those structures.”

ADOT repaired the I-17 bridge using carbon fiber strips with a reinforcing polymer to fix the damaged girders, a technology ADOT has never used before.

“It is seen as more of a space-age repair,” Nintzel said.

The repair means the 19th Avenue bridge is no longer structurally deficient.

“We think the carbon-fiber repairs are effective, can extend the lifespan of structures and can be done in much less time than other repair methods,” David Eberhart, an ADOT bridge engineer, said in a news release. “We’re likely to use it again if and when repairs are needed.”

Lifetime Windows & Doors

We want to hear from you.

Have a story idea or tip? Pass it along to the KTAR News team here.

Arizona News

(Facebook Photo/City Government of Chandler, Arizona)...

Chandler City Council approves policy to prohibit acts of discrimination

The Chandler City Council voted 6-1 to adopt an ordinance that prohibits discrimination during Monday’s meeting.
23 hours ago
(Photo by Mike Simons/Getty Images)...
Associated Press

Execution warrant requested for Arizona death row inmate

The Arizona Attorney General’s Office has requested the state Supreme Court issue a warrant of execution for death row inmate Aaron Gunches.
23 hours ago
(Facebook Photo/Angel Zamora)...

2 Phoenix police officers charged with assault in October incident with shooting suspect

Charges against two Phoenix police officers accused of assaulting a shooting suspect during an October arrest have been submitted to the Maricopa County Attorney's Office.
23 hours ago
(Screenshot via Glendale Police Department)...

Glendale police said officer who activated Taser on shoplifting suspect 14 times followed policy

Glendale police said an officer who activated a Taser 14 times on a shoplifting suspect Tuesday acted within department policy.
23 hours ago
(Frank Lloyd Wright Foundation Photo/Andrew Pielage)...

Frank Lloyd Wright’s Taliesin West in Scottsdale to host 1st holiday experience

The Scottsdale winter home and studio of renowned architect Frank Lloyd Wright will host two weekends of holiday-themed activities open to the public for the first time.
23 hours ago
Teofilo Acuna Gutierrez (Photo courtesy of DPS)...

Silver Alert canceled for 78-year-old man last seen in Phoenix

A Silver Alert was canceled Wednesday evening in Phoenix for a 78-year-old man who hasn't been spotted since Friday.
23 hours ago

Sponsored Articles

(Desert Institute for Spine Care photo)...

Why DISC is world renowned for back and neck pain treatments

Fifty percent of Americans and 90% of people at least 50 years old have some level of degenerative disc disease.
Quantum Fiber

Stream 4K and more with powerful, high-speed fiber internet

Picking which streaming services to subscribe to are difficult choices, and there is no room for internet that cannot handle increased demands.
Children’s Cancer Network

Children’s Cancer Network celebrates cancer-fighting superheroes, raises funds during September’s Childhood Cancer Awareness Month

Jace Hyduchak was like most other kids in his kindergarten class: He loved to play basketball, dress up like his favorite superheroes and jump as high as his pint-sized body would take him on his backyard trampoline.
‘Structurally deficient’ bridge over I-17 repaired using new technology