Crunching the numbers on America's infrastructure...
Crunching the numbers on America's infrastructure...
What's a bridge's favorite exercise? Cross-fit.
over FLAT GAP ROAD
SBL 1M SOU. OF MADISON CL
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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 23,819 vehicles per day and is 59 years old.
Its sufficiency rating of 68.2 is above the national average of 63.6.
The NBI records a navigation clearance of 14 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 is likely to be a comfortable crossing for most travelers.
This bridge is 26 feet long — a quick crossing, under 5 seconds at highway speed.
This is a culvert — you may not even notice you're crossing it.
About 14 feet above ground — standard overpass height.
About 23,819 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 0 feet wide — a very narrow, single-lane crossing.
This bridge crosses over land, not water — no water views 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
1967
59 years old
Structure Type
Concrete Culvert
Total Length
26 ft
7.9 m
Spans
1
sections between supports
Max Span
23 ft
longest unsupported section (7.0 m)
Traffic Lanes
3 lanes
One-way traffic
Clearance Below
14 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
23,819vehicles/day
37.52333°N, 84.32000°W
Concrete Culvert
A concrete culvert is a drainage structure that allows water to flow beneath a road. While technically not a traditional bridge, culverts over 20 feet are tracked in the national inventory.
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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.