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Crunching the numbers on America's infrastructure...
over THUNDER BAY RIVER
0.23 MI E OF US23 HWY
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 5,123 vehicles per day and is 55 years old (reconstructed in 2006).
Its sufficiency rating of 59.8 places it below the national average of 63.6.
For travelers with bridge anxiety
This bridge may cause some awareness for travelers with bridge anxiety, but has manageable characteristics.
This bridge is 245 feet long — a short crossing, about 10-15 seconds.
A standard overpass design with solid barriers on each side.
No height data available — likely a standard overpass height.
About 5,123 vehicles cross daily — light traffic, a smooth crossing.
The deck is 64 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
1971
55 years old (rebuilt 2006)
Structure Type
Prestressed Concrete Stringer/Multi-beam/Girder
Total Length
245 ft
74.6 m
Deck Width
64 ft
19.5 m
Spans
3
sections between supports
Max Span
82 ft
longest unsupported section (24.9 m)
Traffic Lanes
3 lanes
Two-way traffic
Daily Traffic
5,123vehicles/day
45.07090°N, 83.43729°W
Prestressed Concrete Stringer/Multi-beam/Girder
A prestressed concrete stringer bridge uses pretensioned concrete beams, where steel tendons are stretched before concrete is poured. This creates stronger, lighter 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.