What do you call a bridge that tells jokes? A pun-toon bridge.
What do you call a bridge that tells jokes? A pun-toon bridge.
Why did the bridge go to therapy? It had too many spans of anxiety.
over I-293 NH101
1.8 MI N LONDONDERRY TL
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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 35,231 vehicles per day and is 66 years old (reconstructed in 1996).
Its sufficiency rating of 68.5 is above the national average of 63.6.
The NBI records a navigation clearance of 16 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 may cause some awareness for travelers with bridge anxiety, but has manageable characteristics.
This bridge is 173 feet long — a short crossing, about 10-15 seconds.
A standard overpass design with solid barriers on each side.
About 16 feet above ground — standard overpass height.
About 35,231 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 130 feet wide with multiple lanes — easy to stay in a center lane.
This bridge crosses over land, not water — no water views 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 (rebuilt 1996)
Structure Type
Steel (Continuous) Stringer/Multi-beam/Girder
Total Length
173 ft
52.7 m
Deck Width
130 ft
39.6 m
Spans
3
sections between supports
Max Span
56 ft
longest unsupported section (17.1 m)
Traffic Lanes
9 lanes
Two-way traffic
Clearance Below
16 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
35,231vehicles/day
42.95690°N, 71.43609°W
Steel (Continuous) Stringer/Multi-beam/Girder
A steel stringer bridge uses parallel steel beams (stringers) to support the deck. This is one of the most common bridge types in the US, valued for its simplicity and strength.
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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.