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Why did the truss bridge break up with the beam bridge? It needed more support.
over WATER BLACKSTONE RIVER
MM 18.7
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 28,704 vehicles per day and is 29 years old.
Its sufficiency rating of 75.1 is above the national average of 63.6.
The NBI records a navigation clearance of 12 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 238 feet long — a short crossing, about 10-15 seconds.
A standard overpass design with solid barriers on each side.
About 12 feet above ground — standard overpass height.
About 28,704 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 42 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
1997
29 years old
Structure Type
Steel (Continuous) Stringer/Multi-beam/Girder
Total Length
238 ft
72.4 m
Deck Width
42 ft
12.9 m
Spans
3
sections between supports
Max Span
115 ft
longest unsupported section (35.0 m)
Traffic Lanes
2 lanes
One-way traffic
Clearance Below
12 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
28,704vehicles/day
42.22138°N, 71.78674°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.