Why did the truss bridge break up with the beam bridge? It needed more support.
Why did the truss bridge break up with the beam bridge? It needed more support.
Crunching the numbers on America's infrastructure...
over THUNDER BAY RIVER N BR
SEC 10 11 MONTMORENCY TWP
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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 100 vehicles per day and is 26 years old.
Its sufficiency rating of 64.3 is above 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 46 feet long — a quick crossing, under 5 seconds at highway speed.
A standard overpass design with solid barriers on each side.
No height data available — likely a standard overpass height.
Only about 100 vehicles cross daily — very light traffic with low congestion risk.
The deck is 31 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
2000
26 years old
Structure Type
Prestressed Concrete Box Beam (Multiple)
Total Length
46 ft
13.9 m
Deck Width
31 ft
9.5 m
Spans
1
sections between supports
Max Span
38 ft
longest unsupported section (11.7 m)
Traffic Lanes
2 lanes
Two-way traffic
Daily Traffic
100vehicles/day
45.17900°N, 83.92313°W
Prestressed Concrete Box Beam (Multiple)
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.