INTERSTATE 15 SB
INTERSTATE 15 SB in 11-Sd-015-M22.94, San Diego County, California received a condition grade of B (78/100). Built in 2008, the bridge carries 165K vehicles daily on INTERSTATE 15 SB over Bernardo Center DR.
INTERSTATE 15 SB carries a B on the BridgeSafety Condition Score with 78/100. Most component ratings are solid; one or two may show wear consistent with the structure’s age, but the bridge is not flagged as structurally deficient.
The bridge was built in 2008 and is 18 years old — relatively young against the U.S. bridge stock. Modern bridges built to current FHWA standards generally outperform older structures on condition ratings. INTERSTATE 15 SB carries an average daily traffic count of 165,000 vehicles, with 11 lane(s) crossing Bernardo Center DR. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
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 15 SB is a 18-year-old bridge located 11-Sd-015-M22.94 in San Diego County, California. The bridge carries INTERSTATE 15 SB over Bernardo Center DR with 11 traffic lanes, handling approximately 165K vehicles per day. Built in 2008, the structure spans 68.4 meters.
The bridge received a Condition Grade of B (78/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), 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 15 SB has a Condition Score of 78/100 (Grade B). Its deck is rated 7/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
INTERSTATE 15 SB was built in 2008, making it 18 years old. The average bridge age in the United States is 48 years.
INTERSTATE 15 SB carries approximately 165K vehicles per day (average daily traffic). The bridge has 11 traffic lanes. It is 68.4 meters long and located on INTERSTATE 15 SB in 11-Sd-015-M22.94, San Diego County, California.
No, INTERSTATE 15 SB 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 15 SB is located 11-Sd-015-M22.94 in San Diego County, California. The bridge carries INTERSTATE 15 SB over Bernardo Center DR. Its coordinates are 33.011989, -117.079944. It is maintained by State Highway Agency.
INTERSTATE 15 SB carries INTERSTATE 15 SB over Bernardo Center DR. The bridge is 68.4 meters long and was built in 2008.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.