Connecting the data points... literally.
Connecting the data points... literally.
Gathering condition ratings from coast to coast...
over NATIONAL BLVD
07-LA-405-29.16-LA
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 62 years old.
Its sufficiency rating of 74.5 is above the national average of 63.6.
The NBI records a navigation clearance of 15 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 is likely to be a comfortable crossing for most travelers.
This bridge is 143 feet long — a quick crossing, under 5 seconds at highway speed.
A standard overpass design with solid barriers on each side.
About 15 feet above ground — standard overpass height.
About 32,000 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 40 feet wide with 2-3 lanes — moderate width.
This bridge crosses over 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
1964
62 years old
Structure Type
Concrete (Continuous) Box Beam (Single/Spread)
Total Length
143 ft
43.6 m
Deck Width
40 ft
12.3 m
Spans
3
sections between supports
Max Span
86 ft
longest unsupported section (26.2 m)
Traffic Lanes
2 lanes
One-way traffic
Clearance Below
15 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
32,000vehicles/day
34.02687°N, 118.42956°W
Concrete (Continuous) Box Beam (Single)
A concrete box beam bridge uses hollow rectangular concrete sections. The box shape provides excellent torsional resistance and allows for longer spans.
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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.