Analyzing deck conditions, superstructure ratings, and bad puns...
Analyzing deck conditions, superstructure ratings, and bad puns...
Loading structural data... this is riveting stuff.
over WATER MERRIMACK & CANAL
0.2 MI S OF RTE 113
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Good overall condition rating of 7 out of 9. It is in good structural condition and is not classified as structurally deficient.
The bridge carries 13,500 vehicles per day and is 12 years old.
Its sufficiency rating of 72.7 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 535 feet long — a short crossing, about 10-15 seconds.
A truss bridge — the steel framework can provide a sense of enclosure.
No height data available — likely a standard overpass height.
About 13,500 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 71 feet wide with multiple lanes — easy to stay in a center lane.
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
2014
12 years old
Structure Type
Steel (Continuous) Truss (Deck)
Total Length
535 ft
163.0 m
Deck Width
71 ft
21.5 m
Spans
2
sections between supports
Max Span
260 ft
longest unsupported section (79.2 m)
Traffic Lanes
3 lanes
Two-way traffic
Daily Traffic
13,500vehicles/day
42.65146°N, 71.32455°W
Steel (Continuous) Truss (Deck)
A steel truss bridge uses a framework of interconnected triangular elements. The geometric rigidity of triangles makes this design extremely efficient at distributing loads.
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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.