Connecting the data points... literally.
Connecting the data points... literally.
The average US bridge is 48 years old. That's a lot of birthday candles.
over GRAND CAILLOU BAYOU
0.04 MI W OF LA 57
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Poor overall condition rating of 1 out of 9. This bridge is classified as being in poor condition, meaning one or more structural components have significant deterioration. Poor condition does not mean the bridge is unsafe to drive on, but it does mean repairs or replacement may be needed.
The bridge carries 363 vehicles per day and is 50 years old.
Its sufficiency rating of 26.4 places it below the national average of 63.6.
The NBI records a navigation clearance of 80 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 416 feet long — a short crossing, about 10-15 seconds.
A movable bridge — it may occasionally stop for boat traffic.
About 80 feet above ground — an elevated crossing, similar to a 5-10 story building.
Only about 363 vehicles cross daily — very light traffic with low congestion risk.
The deck is 27 feet wide with 1-2 lanes — a narrower crossing.
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
1976
50 years old
Structure Type
Steel Movable (Lift)
Total Length
416 ft
126.8 m
Deck Width
27 ft
8.2 m
Spans
1
sections between supports
Max Span
76 ft
longest unsupported section (23.2 m)
Traffic Lanes
2 lanes
Two-way traffic
Clearance Below
80 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
363vehicles/day
29.38288°N, 90.71586°W
Steel Movable (Lift)
A movable bridge can change position to allow passage of boats or other traffic. Steel movable bridges include lift, bascule (drawbridge), and swing types.
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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.