Crunching the numbers on America's infrastructure...
Crunching the numbers on America's infrastructure...
Why did the truss bridge break up with the beam bridge? It needed more support.
over BLOOD BROOK
0.02 MI SW JCT NH101
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Poor overall condition rating of 3 out of 9. This bridge is classified as being in poor condition, meaning one or more structural components have significant deterioration. Poor condition does not mean the bridge is unsafe to drive on, but it does mean repairs or replacement may be needed.
The bridge carries 1,167 vehicles per day and is 125 years old.
Its sufficiency rating of 28.6 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 49 feet long — a quick crossing, under 5 seconds at highway speed.
An arch bridge design with some openness to the surroundings.
No height data available — likely a standard overpass height.
About 1,167 vehicles cross daily — light traffic, a smooth crossing.
The deck is 23 feet wide with 1-2 lanes — a narrower 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
1901
125 years old
Structure Type
Masonry Arch (Deck)
Total Length
49 ft
14.9 m
Deck Width
23 ft
7.0 m
Spans
2
sections between supports
Max Span
19 ft
longest unsupported section (5.8 m)
Traffic Lanes
2 lanes
Two-way traffic
Daily Traffic
1,167vehicles/day
42.83049°N, 71.80567°W
Masonry Arch (Deck)
A masonry arch bridge uses stone or brick arranged in an arch shape — one of the oldest bridge designs in the world. The arch transfers loads to the abutments through compression.
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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.