Why don't bridges ever get lonely? Because they're always making connections.
Why don't bridges ever get lonely? Because they're always making connections.
Why did the truss bridge break up with the beam bridge? It needed more support.
over PISCATAQUA RIVER
NH-MAINE SL
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 8 out of 9. It is in good structural condition and is not classified as structurally deficient.
The bridge carries 9,471 vehicles per day and is 105 years old (reconstructed in 2013).
Its sufficiency rating of 78.2 is above the national average of 63.6.
The NBI records a navigation clearance of 150 feet — the minimum vertical space below the bridge deck. The total height of the bridge structure (including towers, railings, and superstructure) may be higher.
For travelers with bridge anxiety
This bridge has some features that may be challenging for travelers with bridge anxiety. See the tips below for a more comfortable crossing.
This bridge is 903 feet long — a moderate crossing, about 30 seconds.
A movable bridge — it may occasionally stop for boat traffic.
About 150 feet above ground — a high bridge with significant elevation.
About 9,471 vehicles cross daily — light traffic, a smooth crossing.
The deck is 46 feet wide with 2-3 lanes — moderate 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
1921
105 years old (rebuilt 2013)
Structure Type
Steel Movable (Lift)
Total Length
903 ft
275.1 m
Deck Width
46 ft
14.1 m
Spans
3
sections between supports
Max Span
297 ft
longest unsupported section (90.5 m)
Traffic Lanes
2 lanes
Two-way traffic
Clearance Below
150 ft
navigation clearance under deck
Clearance height compared to familiar objects
Height shown is the navigation clearance below the bridge deck. The total height of the bridge structure (including towers and superstructure) may be higher.
Daily Traffic
9,471vehicles/day
43.07961°N, 70.75255°W
Steel Movable (Lift)
A movable bridge can change position to allow passage of boats or other traffic. Steel movable bridges include lift, bascule (drawbridge), and swing types.
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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.