SR 51
SR 51 in SR 51 @ Osborn, Maricopa County, Arizona received a condition grade of B (70/100). Built in 1987, the bridge carries 180K vehicles daily on SR 51 over Osborn Road.
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 39-year-old bridge located SR 51 @ Osborn in Maricopa County, Arizona. The bridge carries SR 51 over Osborn Road with 8 traffic lanes, handling approximately 180K vehicles per day. Built in 1987, the structure spans 67.7 meters.
The bridge received a Condition Grade of B (70/100) 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
SR 51 has a Condition Score of 70/100 (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.
SR 51 was built in 1987, making it 39 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 67.7 meters long and located on SR 51 in SR 51 @ Osborn, 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 SR 51 @ Osborn in Maricopa County, Arizona. The bridge carries SR 51 over Osborn Road. Its coordinates are 33.487222, -112.041939. It is maintained by State Highway Agency.
SR 51 carries SR 51 over Osborn Road. The bridge is 67.7 meters long and was built in 1987.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.