Almost there! Just bridging the gap...
Almost there! Just bridging the gap...
Why did the truss bridge break up with the beam bridge? It needed more support.
over ROANOKE RIVER OVERFLOW
3.5 MI.S.JCT.SR1521
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 5 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 5,750 vehicles per day and is 34 years old.
Its sufficiency rating of 60.6 places it below 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 146 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 5,750 vehicles cross daily — light traffic, a smooth crossing.
The deck is 39 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
1992
34 years old
Structure Type
Prestressed Concrete Slab
Total Length
146 ft
44.5 m
Deck Width
39 ft
11.9 m
Spans
3
sections between supports
Max Span
47 ft
longest unsupported section (14.3 m)
Traffic Lanes
2 lanes
One-way traffic
Daily Traffic
5,750vehicles/day
35.86336°N, 77.03774°W
Prestressed Concrete Slab
A prestressed concrete slab bridge uses a flat concrete deck that has been pretensioned for additional strength. Efficient for short to medium spans.
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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.