Gathering condition ratings from coast to coast...
Gathering condition ratings from coast to coast...
Analyzing deck conditions, superstructure ratings, and bad puns...
over US HIGHWAY 101
04-MRN-101-9.94-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 22,200 vehicles per day and is 17 years old.
Its sufficiency rating of 75.0 is above the national average of 63.6.
The NBI records a navigation clearance of 20 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 1427 feet long — a moderate crossing, about 30 seconds.
A standard overpass design with solid barriers on each side.
About 20 feet above ground — moderate height, similar to a 3-5 story building.
About 22,200 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 41 feet wide with 2-3 lanes — moderate width.
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
2009
17 years old
Structure Type
Prestressed Concrete (Continuous) Box Beam (Multiple)
Total Length
1,427 ft
435.0 m
Deck Width
41 ft
12.6 m
Spans
10
sections between supports
Max Span
161 ft
longest unsupported section (49.0 m)
Traffic Lanes
2 lanes
One-way traffic
Clearance Below
20 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
22,200vehicles/day
37.96146°N, 122.50784°W
Prestressed Concrete (Continuous) 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.