Why don't bridges ever get lonely? Because they're always making connections.
Why don't bridges ever get lonely? Because they're always making connections.
Why was the bridge always tired? Too many crossings.
over WALNUT CREEK UC (BARTD)
04-CC-024-R8.31
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 79,500 vehicles per day and is 56 years old.
Its sufficiency rating of 70.6 is above the national average of 63.6.
The NBI records a navigation clearance of 13 feet — the minimum vertical space below the bridge deck. The total height of the bridge structure (including towers, railings, and superstructure) may be higher.
For travelers with bridge anxiety
This bridge may cause some awareness for travelers with bridge anxiety, but has manageable characteristics.
This bridge is 35 feet long — a quick crossing, under 5 seconds at highway speed.
A standard overpass design with solid barriers on each side.
About 13 feet above ground — standard overpass height.
About 79,500 vehicles cross daily — heavy traffic, congestion likely during rush hours.
The deck is 0 feet wide — a very narrow, single-lane crossing.
This bridge crosses over land, not water — no water views 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
1970
56 years old
Structure Type
Concrete Slab
Total Length
35 ft
10.8 m
Spans
2
sections between supports
Max Span
16 ft
longest unsupported section (4.8 m)
Traffic Lanes
5 lanes
One-way traffic
Clearance Below
13 ft
navigation clearance under deck
Clearance height compared to familiar objects
Height shown is the navigation clearance below the bridge deck. The total height of the bridge structure (including towers and superstructure) may be higher.
Daily Traffic
79,500vehicles/day
37.89796°N, 122.08488°W
Concrete Slab
A concrete slab bridge is a simple, solid concrete deck that acts as both the structural support and driving surface. Common for short spans, they are durable and low-maintenance.
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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.