Why did the truss bridge break up with the beam bridge? It needed more support.
Why did the truss bridge break up with the beam bridge? It needed more support.
Fetching data from the National Bridge Inventory...
over SMITH RIVER
3.5 MI FROM ALTON TL
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
Loading 3D model...
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 8,809 vehicles per day and is 91 years old (reconstructed in 2006).
Its sufficiency rating of 71.9 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 34 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 8,809 vehicles cross daily — light traffic, a smooth crossing.
The deck is 49 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
1935
91 years old (rebuilt 2006)
Structure Type
Prestressed Concrete Slab
Total Length
34 ft
10.5 m
Deck Width
49 ft
15.0 m
Spans
1
sections between supports
Max Span
31 ft
longest unsupported section (9.5 m)
Traffic Lanes
2 lanes
Two-way traffic
Daily Traffic
8,809vehicles/day
43.58943°N, 71.20555°W
Prestressed Concrete Slab
A prestressed concrete slab bridge uses a flat concrete deck that has been pretensioned for additional strength. Efficient for short to medium spans.
Learn more about this bridge typeNo ratings yet. Be the first to rate this bridge!
Sign in and track New Hampshire to receive alerts when new inspection data is published. Premium members get bridge-specific notifications.
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.