Why do engineers love bridges? They're outstanding in their field.
Why do engineers love bridges? They're outstanding in their field.
A bridge's favorite type of music? Heavy metal. Or suspension... it depends.
over LUCAS VALLEY ROAD
04-MRN-101-14.71-SRF
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 151,000 vehicles per day and is 74 years old (reconstructed in 1987).
Its sufficiency rating of 73.8 is above the national average of 63.6.
The NBI records a navigation clearance of 14 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 103 feet long — a quick crossing, under 5 seconds at highway speed.
A standard overpass design with solid barriers on each side.
About 14 feet above ground — standard overpass height.
About 151,000 vehicles cross daily — very heavy traffic, high congestion risk.
The deck is 185 feet wide with multiple lanes — easy to stay in a center lane.
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
1952
74 years old (rebuilt 1987)
Structure Type
Concrete (Continuous) Slab
Total Length
103 ft
31.4 m
Deck Width
185 ft
56.4 m
Spans
3
sections between supports
Max Span
40 ft
longest unsupported section (12.2 m)
Traffic Lanes
10 lanes
Two-way traffic
Clearance Below
14 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
151,000vehicles/day
38.02095°N, 122.53896°W
Concrete (Continuous) 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.