SR 51
SR 51 in 20th ST & SR 51, Maricopa County, Arizona received a condition grade of B (74/100). Built in 1990, the bridge carries 180K vehicles daily on SR 51 over 20th ST Southbound.
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
SR 51 is a 36-year-old bridge located 20th ST & SR 51 in Maricopa County, Arizona. The bridge carries SR 51 over 20th ST Southbound with 8 traffic lanes, handling approximately 180K vehicles per day. Built in 1990, the structure spans 37.2 meters.
The bridge received a Condition Grade of B (74/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 7/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
SR 51 has a Condition Score of 74/100 (Grade B). Its deck is rated 6/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
SR 51 was built in 1990, making it 36 years old. The average bridge age in the United States is 48 years.
SR 51 carries approximately 180K vehicles per day (average daily traffic). The bridge has 8 traffic lanes. It is 37.2 meters long and located on SR 51 in 20th ST & SR 51, Maricopa County, Arizona.
No, SR 51 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
SR 51 is located 20th ST & SR 51 in Maricopa County, Arizona. The bridge carries SR 51 over 20th ST Southbound. Its coordinates are 33.482436, -112.039156. It is maintained by State Highway Agency.
SR 51 carries SR 51 over 20th ST Southbound. The bridge is 37.2 meters long and was built in 1990.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.