Why was the bridge always tired? Too many crossings.
Why was the bridge always tired? Too many crossings.
A bridge's favorite type of music? Heavy metal. Or suspension... it depends.
over WALNUT CREEK
04-CC-004-R13.40
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Fair overall condition rating of 6 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 41,300 vehicles per day and is 45 years old (reconstructed in 2021).
Its sufficiency rating of 68.5 is above 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 422 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 41,300 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 70 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
1981
45 years old (rebuilt 2021)
Structure Type
Concrete (Continuous) Box Beam (Multiple)
Total Length
422 ft
128.6 m
Deck Width
70 ft
21.4 m
Spans
5
sections between supports
Max Span
90 ft
longest unsupported section (27.4 m)
Traffic Lanes
4 lanes
One-way traffic
Daily Traffic
41,300vehicles/day
37.99956°N, 122.05754°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.