INTERSTATE 580
INTERSTATE 580 in 04-Ala-580-11.72, Alameda County, California received a condition grade of B (68/100). Built in 1972, the bridge carries 197K vehicles daily on INTERSTATE 580 over Arroyo Las Positas.
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
INTERSTATE 580 is a 54-year-old bridge located 04-Ala-580-11.72 in Alameda County, California. The bridge carries INTERSTATE 580 over Arroyo Las Positas with 13 traffic lanes, handling approximately 197K vehicles per day. Built in 1972 and reconstructed in 2015, the structure spans 39.9 meters.
The bridge received a Condition Grade of B (68/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (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
INTERSTATE 580 has a Condition Score of 68/100 (Grade B). Its deck is rated 5/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
INTERSTATE 580 was built in 1972 and reconstructed in 2015, making it 54 years old. The average bridge age in the United States is 48 years.
INTERSTATE 580 carries approximately 197K vehicles per day (average daily traffic). The bridge has 13 traffic lanes. It is 39.9 meters long and located on INTERSTATE 580 in 04-Ala-580-11.72, Alameda County, California.
No, INTERSTATE 580 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
INTERSTATE 580 is located 04-Ala-580-11.72 in Alameda County, California. The bridge carries INTERSTATE 580 over Arroyo Las Positas. Its coordinates are 37.703128, -121.759019. It is maintained by State Highway Agency.
INTERSTATE 580 carries INTERSTATE 580 over Arroyo Las Positas. The bridge is 39.9 meters long and was built in 1972, with reconstruction in 2015.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.