Why was the bridge always tired? Too many crossings.
Why was the bridge always tired? Too many crossings.
What's a bridge's favorite exercise? Cross-fit.
over WATER MERRIMACK CANAL
AT HIGH SCHOOL
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 99,300 vehicles per day and is 66 years old.
Its sufficiency rating of 52.9 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 58 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 99,300 vehicles cross daily — heavy traffic, congestion likely during rush hours.
The deck is 54 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
Structure Type
Prestressed Concrete Box Beam (Multiple)
Total Length
58 ft
17.7 m
Deck Width
54 ft
16.5 m
Spans
1
sections between supports
Max Span
55 ft
longest unsupported section (16.8 m)
Traffic Lanes
2 lanes
Two-way traffic
Daily Traffic
99,300vehicles/day
42.64795°N, 71.31052°W
Prestressed Concrete Box Beam (Multiple)
A prestressed concrete box beam bridge combines hollow box sections with prestressing technology, enabling longer spans with reduced weight and material usage.
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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.