The average US bridge is 48 years old. That's a lot of birthday candles.
The average US bridge is 48 years old. That's a lot of birthday candles.
Connecting the data points... literally.
over SEBASTICOOK RIVER
100 FT N JCT RTE 137
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 16,604 vehicles per day and is 66 years old (reconstructed in 2005).
Its sufficiency rating of 65.3 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 371 feet long — a short crossing, about 10-15 seconds.
A standard overpass design with solid barriers on each side.
No height data available — likely a standard overpass height.
About 16,604 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 64 feet wide with 3-4 lanes — standard 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
1960
66 years old (rebuilt 2005)
Structure Type
Steel (Continuous) Stringer/Multi-beam/Girder
Total Length
371 ft
113.1 m
Deck Width
64 ft
19.5 m
Spans
5
sections between supports
Max Span
95 ft
longest unsupported section (29.0 m)
Traffic Lanes
4 lanes
Two-way traffic
Daily Traffic
16,604vehicles/day
44.53878°N, 69.62828°W
Steel (Continuous) Stringer/Multi-beam/Girder
A steel stringer bridge uses parallel steel beams (stringers) to support the deck. This is one of the most common bridge types in the US, valued for its simplicity and strength.
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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.