Gathering condition ratings from coast to coast...
Gathering condition ratings from coast to coast...
Why did the bridge go to therapy? It had too many spans of anxiety.
over CABIN JOHN CREEK
1 MI E OF SEVEN LOCKS RD
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 6 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 24,539 vehicles per day and is 60 years old.
Its sufficiency rating of 66.8 is above the national average of 63.6.
For travelers with bridge anxiety
This bridge is likely to be a comfortable crossing for most travelers.
This bridge is 59 feet long — a quick crossing, under 5 seconds at highway speed.
This is a culvert — you may not even notice you're crossing it.
No height data available — likely a standard overpass height.
About 24,539 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 46 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
1966
60 years old
Structure Type
Concrete Culvert
Total Length
59 ft
18.0 m
Deck Width
46 ft
14.0 m
Spans
4
sections between supports
Max Span
14 ft
longest unsupported section (4.3 m)
Traffic Lanes
2 lanes
Two-way traffic
Daily Traffic
24,539vehicles/day
39.03667°N, 77.15429°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.