Crunching the numbers on America's infrastructure...
Crunching the numbers on America's infrastructure...
Why did the truss bridge break up with the beam bridge? It needed more support.
over TN ROUTE 100
NORTHERN TERMINUS OF PARK
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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 460 vehicles per day and is 31 years old.
Its sufficiency rating of 66.0 is above the national average of 63.6.
The NBI records a navigation clearance of 19 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 may cause some awareness for travelers with bridge anxiety, but has manageable characteristics.
This bridge is 520 feet long — a short crossing, about 10-15 seconds.
A standard overpass design with solid barriers on each side.
About 19 feet above ground — moderate height, similar to a 3-5 story building.
Only about 460 vehicles cross daily — very light traffic with low congestion risk.
The deck is 37 feet wide with 2-3 lanes — moderate 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
1995
31 years old
Structure Type
Prestressed Concrete (Continuous) Box Beam (Single/Spread)
Total Length
520 ft
158.5 m
Deck Width
37 ft
11.3 m
Spans
3
sections between supports
Max Span
208 ft
longest unsupported section (63.4 m)
Traffic Lanes
2 lanes
Two-way traffic
Clearance Below
19 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
460vehicles/day
36.03322°N, 86.97603°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.