Fun fact: Covered bridges were roofed to protect the wood, not the travelers.
Fun fact: Covered bridges were roofed to protect the wood, not the travelers.
Why do engineers love bridges? They're outstanding in their field.
over CHINA BASIN BERRY 6 ST
04-SF-280-T7.18-SF
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 5 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 18,000 vehicles per day and is 28 years old.
Its sufficiency rating of 61.1 places it below the national average of 63.6.
The NBI records a navigation clearance of 49 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 has some features that may be challenging for travelers with bridge anxiety. See the tips below for a more comfortable crossing.
This bridge is 1452 feet long — a moderate crossing, about 30 seconds.
A standard overpass design with solid barriers on each side.
About 49 feet above ground — an elevated crossing, similar to a 5-10 story building.
About 18,000 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 40 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
1998
28 years old
Structure Type
Prestressed Concrete (Continuous) Box Beam (Single/Spread)
Total Length
1,452 ft
442.7 m
Deck Width
40 ft
12.2 m
Spans
9
sections between supports
Max Span
167 ft
longest unsupported section (50.9 m)
Traffic Lanes
2 lanes
One-way traffic
Clearance Below
49 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
18,000vehicles/day
37.77022°N, 122.39778°W
Prestressed Concrete (Continuous) Box Beam (Single)
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.