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Loading 624,191 bridges... give or take a few.
Why did the truss bridge break up with the beam bridge? It needed more support.
over TUNUNAK RIVER
NELSON ISLAND
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 46 vehicles per day and is 48 years old (reconstructed in 1987).
Its sufficiency rating of 58.9 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 65 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.
Only about 46 vehicles cross daily — very light traffic with low congestion risk.
The deck is 16 feet wide — a very narrow, single-lane crossing.
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
1978
48 years old (rebuilt 1987)
Structure Type
Wood/Timber Stringer/Multi-beam/Girder
Total Length
65 ft
19.8 m
Deck Width
16 ft
4.8 m
Spans
1
sections between supports
Max Span
45 ft
longest unsupported section (13.7 m)
Traffic Lanes
1 lane
Daily Traffic
46vehicles/day
60.57821°N, 165.26919°W
Wood/Timber Stringer/Multi-beam/Girder
A timber stringer bridge uses wooden beams as the primary structure. While less common today, timber bridges remain practical for low-traffic rural roads and historic settings.
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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.