STATE ROUTE 24 WB
STATE ROUTE 24 WB in 04-Ala-024-R4.38-Oak, Alameda County, California received a condition grade of B (75/100). Built in 1970, the bridge carries 143K vehicles daily on STATE ROUTE 24 WB over Bartd (@Golden Gate AVE).
STATE ROUTE 24 WB carries a B on the BridgeSafety Condition Score with 75/100. 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 1970 and is now 56 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. STATE ROUTE 24 WB carries an average daily traffic count of 143,000 vehicles, with 4 lane(s) crossing Bartd (@Golden Gate AVE). 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
STATE ROUTE 24 WB is a 56-year-old bridge located 04-Ala-024-R4.38-Oak in Alameda County, California. The bridge carries STATE ROUTE 24 WB over Bartd (@Golden Gate AVE) with 4 traffic lanes, handling approximately 143K vehicles per day. Built in 1970, the structure spans 192.6 meters.
The bridge received a Condition Grade of B (75/100) 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
STATE ROUTE 24 WB has a Condition Score of 75/100 (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.
STATE ROUTE 24 WB was built in 1970, making it 56 years old. The average bridge age in the United States is 48 years.
STATE ROUTE 24 WB carries approximately 143K vehicles per day (average daily traffic). The bridge has 4 traffic lanes. It is 192.6 meters long and located on STATE ROUTE 24 WB in 04-Ala-024-R4.38-Oak, Alameda County, California.
No, STATE ROUTE 24 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.
STATE ROUTE 24 WB is located 04-Ala-024-R4.38-Oak in Alameda County, California. The bridge carries STATE ROUTE 24 WB over Bartd (@Golden Gate AVE). Its coordinates are 37.850100, -122.240531. It is maintained by State Highway Agency.
STATE ROUTE 24 WB carries STATE ROUTE 24 WB over Bartd (@Golden Gate AVE). The bridge is 192.6 meters long and was built in 1970.
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.