I 17
I 17 in 9.3 MI N JCT US 60, Maricopa County, Arizona received a condition grade of B (65/100). Built in 1965, the bridge carries 178K vehicles daily on I 17 over Thunderbird RD.
Component Ratings
The riding surface — evaluated for cracking, spalling, and wear
Beams, girders, and trusses that support the deck
Piers, abutments, and foundations below the deck
Bridge Details
About This Bridge
I 17 is a 61-year-old bridge located 9.3 MI N JCT US 60 in Maricopa County, Arizona. The bridge carries I 17 over Thunderbird RD with 8 traffic lanes, handling approximately 178K vehicles per day. Built in 1965 and reconstructed in 1996, the structure spans 43.9 meters.
The bridge received a Condition Grade of B (65/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 7/9 (good), and substructure 6/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I 17 has a Condition Score of 65/100 (Grade B). Its deck is rated 6/9, superstructure 7/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
I 17 was built in 1965 and reconstructed in 1996, making it 61 years old. The average bridge age in the United States is 48 years.
I 17 carries approximately 178K vehicles per day (average daily traffic). The bridge has 8 traffic lanes. It is 43.9 meters long and located on I 17 in 9.3 MI N JCT US 60, Maricopa County, Arizona.
No, I 17 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
I 17 is located 9.3 MI N JCT US 60 in Maricopa County, Arizona. The bridge carries I 17 over Thunderbird RD. Its coordinates are 33.610600, -112.116700. It is maintained by State Highway Agency.
I 17 carries I 17 over Thunderbird RD. The bridge is 43.9 meters long and was built in 1965, with reconstruction in 1996.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.