MAGNOLIA STREET
MAGNOLIA STREET in 12-Ora-405-15.21-Hntb, Orange County, California received a condition grade of B (78/100). Built in 2021, the bridge carries 254K vehicles daily on MAGNOLIA STREET over Route 405.
MAGNOLIA STREET 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 2021 and is 5 years old — relatively young against the U.S. bridge stock. Modern bridges built to current FHWA standards generally outperform older structures on condition ratings. MAGNOLIA STREET carries an average daily traffic count of 254,000 vehicles, with 6 lane(s) crossing Route 405. 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
MAGNOLIA STREET is a 5-year-old bridge located 12-Ora-405-15.21-Hntb in Orange County, California. The bridge carries MAGNOLIA STREET over Route 405 with 6 traffic lanes, handling approximately 254K vehicles per day. Built in 2021, the structure spans 135.4 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
MAGNOLIA STREET 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.
MAGNOLIA STREET was built in 2021, making it 5 years old. The average bridge age in the United States is 48 years.
MAGNOLIA STREET carries approximately 254K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 135.4 meters long and located on MAGNOLIA STREET in 12-Ora-405-15.21-Hntb, Orange County, California.
No, MAGNOLIA STREET is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
MAGNOLIA STREET is located 12-Ora-405-15.21-Hntb in Orange County, California. The bridge carries MAGNOLIA STREET over Route 405. Its coordinates are 33.719250, -117.971722. It is maintained by State Highway Agency.
MAGNOLIA STREET carries MAGNOLIA STREET over Route 405. The bridge is 135.4 meters long and was built in 2021.
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.