Gathering condition ratings from coast to coast...
Gathering condition ratings from coast to coast...
Fun fact: The average American crosses 4 bridges a day without even noticing.
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 6 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 11,926 vehicles per day and is 69 years old.
Its sufficiency rating of 70.7 is above the national average of 63.6.
The NBI records a navigation clearance of 135 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 features that may be difficult for travelers with bridge anxiety. Planning ahead and using the tips below can help.
This bridge is 19248 feet long — an extended crossing, several minutes.
A suspension bridge — an open design, typically high above the waterway.
About 135 feet above ground — a high bridge with significant elevation.
About 11,926 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 54 feet wide with 3-4 lanes — standard 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
1957
69 years old
Structure Type
Steel Suspension
Total Length
3.65 mi
5866.7 m
Deck Width
54 ft
16.4 m
Spans
3
sections between supports
Max Span
3,801 ft
longest unsupported section (1158.5 m)
Traffic Lanes
4 lanes
Two-way traffic
Clearance Below
135 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
11,926vehicles/day
45.83684°N, 84.72481°W
Steel Suspension
A suspension bridge hangs the deck from cables supported by tall towers. This design enables the longest bridge spans in the world.
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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.