Why did the truss bridge break up with the beam bridge? It needed more support.
Why did the truss bridge break up with the beam bridge? It needed more support.
Why was the bridge always tired? Too many crossings.
over SAN MATEO CREEK
11-SD-005-R71.94-OCN
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This bridge has a Fair overall condition rating of 5 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 66,500 vehicles per day and is 58 years old.
Its sufficiency rating of 61.1 places it below the national average of 63.6.
For travelers with bridge anxiety
This bridge may cause some awareness for travelers with bridge anxiety, but has manageable characteristics.
This bridge is 506 feet long — a short crossing, about 10-15 seconds.
A standard overpass design with solid barriers on each side.
No height data available — likely a standard overpass height.
About 66,500 vehicles cross daily — heavy traffic, congestion likely during rush hours.
The deck is 68 feet wide with multiple lanes — easy to stay in a center lane.
This bridge crosses over water. Focus on the road ahead — the water is far below.
This comfort score is designed to help individuals with bridge anxiety plan their travel. All bridges in the National Bridge Inventory are regularly inspected and deemed safe for travel. This is not medical advice — if you experience severe anxiety, please consult a healthcare professional.
Year Built
1968
58 years old
Structure Type
Concrete (Continuous) Box Beam (Multiple)
Total Length
506 ft
154.2 m
Deck Width
68 ft
20.7 m
Spans
5
sections between supports
Max Span
102 ft
longest unsupported section (31.1 m)
Traffic Lanes
4 lanes
One-way traffic
Daily Traffic
66,500vehicles/day
33.39109°N, 117.58998°W
Concrete (Continuous) Box Beam (Multiple)
A concrete box beam bridge uses hollow rectangular concrete sections. The box shape provides excellent torsional resistance and allows for longer spans.
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Data from the National Bridge Inventory (NBI), maintained by the Federal Highway Administration (FHWA).
Data year: 2025. Conditions may have changed since the last inspection.
This information is provided for educational and informational purposes only. It should not be used as the sole basis for any decisions related to bridge safety or transportation planning. Always consult official sources and local authorities for the most current data.