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over WATER SOUTH CANAL
JUST S OF MERRIMACK RIV
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 4 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 38,100 vehicles per day and is 108 years old.
Its sufficiency rating of 55.4 places it below the national average of 63.6.
For travelers with bridge anxiety
This bridge is likely to be a comfortable crossing for most travelers.
This bridge is 70 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 38,100 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 80 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
1918
108 years old
Structure Type
Concrete Tee Beam
Total Length
70 ft
21.3 m
Deck Width
80 ft
24.5 m
Spans
1
sections between supports
Max Span
67 ft
longest unsupported section (20.4 m)
Traffic Lanes
4 lanes
Two-way traffic
Daily Traffic
38,100vehicles/day
42.70171°N, 71.15958°W
Concrete Tee Beam
A concrete tee beam bridge uses T-shaped cross-section beams where the top flange serves as part of the deck, efficiently using concrete in both compression and tension.
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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.