Gathering condition ratings from coast to coast...
Gathering condition ratings from coast to coast...
Connecting the data points... literally.
over TOLAY CREEK
04-SON-037-4.04
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Good overall condition rating of 7 out of 9. It is in good structural condition and is not classified as structurally deficient.
The bridge carries 32,000 vehicles per day and is 95 years old (reconstructed in 1972).
Its sufficiency rating of 67.2 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 61 feet long — a quick crossing, under 5 seconds at highway speed.
A standard overpass design with solid barriers on each side.
No height data available — likely a standard overpass height.
About 32,000 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 42 feet wide with 2-3 lanes — moderate width.
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
1931
95 years old (rebuilt 1972)
Structure Type
Prestressed Concrete Box Beam (Multiple)
Total Length
61 ft
18.6 m
Deck Width
42 ft
12.8 m
Spans
1
sections between supports
Max Span
60 ft
longest unsupported section (18.3 m)
Traffic Lanes
2 lanes
Two-way traffic
Daily Traffic
32,000vehicles/day
38.15166°N, 122.44696°W
Prestressed Concrete Box Beam (Multiple)
A prestressed concrete box beam bridge combines hollow box sections with prestressing technology, enabling longer spans with reduced weight and material usage.
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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.