INTERSTATE 210 WB
INTERSTATE 210 WB in 07-La-210-R29.79-Ada, Los Angeles County, California received a condition grade of B (68/100). Built in 1971, the bridge carries 147K vehicles daily on INTERSTATE 210 WB over Michillinda Avenue.
INTERSTATE 210 WB carries a B on the BridgeSafety Condition Score with 68/100. 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 1971 and is now 55 years old, at or past the typical 50-year design life for bridges of its vintage. Maintenance and inspection cycles are correspondingly more involved than for newer structures. INTERSTATE 210 WB carries an average daily traffic count of 147,000 vehicles, with 6 lane(s) crossing Michillinda Avenue. 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 210 WB is a 55-year-old bridge located 07-La-210-R29.79-Ada in Los Angeles County, California. The bridge carries INTERSTATE 210 WB over Michillinda Avenue with 6 traffic lanes, handling approximately 147K vehicles per day. Built in 1971, the structure spans 50.6 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 210 WB 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 210 WB was built in 1971, making it 55 years old. The average bridge age in the United States is 48 years.
INTERSTATE 210 WB carries approximately 147K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 50.6 meters long and located on INTERSTATE 210 WB in 07-La-210-R29.79-Ada, Los Angeles County, California.
No, INTERSTATE 210 WB 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 210 WB is located 07-La-210-R29.79-Ada in Los Angeles County, California. The bridge carries INTERSTATE 210 WB over Michillinda Avenue. Its coordinates are 34.148800, -118.068078. It is maintained by State Highway Agency.
INTERSTATE 210 WB carries INTERSTATE 210 WB over Michillinda Avenue. The bridge is 50.6 meters long and was built in 1971.
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.