INTERSTATE 8
INTERSTATE 8 in 11-Sd-008-15.30-Ecj, San Diego County, California received a condition grade of B (63/100). Built in 1961, the bridge carries 188K vehicles daily on INTERSTATE 8 over Johnson AVE.
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 8 is a 65-year-old bridge located 11-Sd-008-15.30-Ecj in San Diego County, California. The bridge carries INTERSTATE 8 over Johnson AVE with 9 traffic lanes, handling approximately 188K vehicles per day. Built in 1961 and reconstructed in 1983, the structure spans 19.2 meters.
The bridge received a Condition Grade of B (63/100) 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 8 has a Condition Score of 63/100 (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 8 was built in 1961 and reconstructed in 1983, making it 65 years old. The average bridge age in the United States is 48 years.
INTERSTATE 8 carries approximately 188K vehicles per day (average daily traffic). The bridge has 9 traffic lanes. It is 19.2 meters long and located on INTERSTATE 8 in 11-Sd-008-15.30-Ecj, San Diego County, California.
No, INTERSTATE 8 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 8 is located 11-Sd-008-15.30-Ecj in San Diego County, California. The bridge carries INTERSTATE 8 over Johnson AVE. Its coordinates are 32.802614, -116.971172. It is maintained by State Highway Agency.
INTERSTATE 8 carries INTERSTATE 8 over Johnson AVE. The bridge is 19.2 meters long and was built in 1961, with reconstruction in 1983.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.