Connecting the data points... literally.
Connecting the data points... literally.
A bridge's favorite type of music? Heavy metal. Or suspension... it depends.
over GANNON SLOUGH
01-HUM-101-84.70-ARC
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 17,500 vehicles per day and is 71 years old.
Its sufficiency rating of 74.1 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 76 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.
About 17,500 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 41 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
1955
71 years old
Structure Type
Concrete (Continuous) Slab
Total Length
76 ft
23.3 m
Deck Width
41 ft
12.5 m
Spans
4
sections between supports
Max Span
21 ft
longest unsupported section (6.4 m)
Traffic Lanes
2 lanes
One-way traffic
Daily Traffic
17,500vehicles/day
40.84647°N, 124.08162°W
Concrete (Continuous) Slab
A concrete slab bridge is a simple, solid concrete deck that acts as both the structural support and driving surface. Common for short spans, they are durable and low-maintenance.
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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.