The average US bridge is 48 years old. That's a lot of birthday candles.
The average US bridge is 48 years old. That's a lot of birthday candles.
Fun fact: Covered bridges were roofed to protect the wood, not the travelers.
over CANNONBALL RIVER
7 NORTH 16 EAST OF AMIDON
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 65 vehicles per day and is 35 years old.
Its sufficiency rating of 63.9 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 98 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 65 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
1991
35 years old
Structure Type
Prestressed Concrete (Continuous) Box Beam (Single/Spread)
Total Length
98 ft
29.9 m
Deck Width
31 ft
9.5 m
Spans
3
sections between supports
Max Span
41 ft
longest unsupported section (12.4 m)
Traffic Lanes
2 lanes
Two-way traffic
Daily Traffic
65vehicles/day
46.59242°N, 102.98861°W
Prestressed Concrete (Continuous) Box Beam (Single)
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.