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Why was the bridge always tired? Too many crossings.
over COMB I93 RMP NS & MBTA
I93/US1 INTERCHANGE
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Fair overall condition rating of 6 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 51,207 vehicles per day and is 24 years old.
Its sufficiency rating of 63.0 places it below the national average of 63.6.
The NBI records a navigation clearance of 24 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 443 feet long — a short crossing, about 10-15 seconds.
A standard bridge design.
About 24 feet above ground — moderate height, similar to a 3-5 story building.
About 51,207 vehicles cross daily — heavy traffic, congestion likely during rush hours.
The deck is 45 feet wide with 2-3 lanes — moderate width.
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
2002
24 years old
Structure Type
Prestressed Concrete (Continuous) Segmental Box Girder
Total Length
443 ft
135.0 m
Deck Width
45 ft
13.7 m
Spans
3
sections between supports
Max Span
181 ft
longest unsupported section (55.2 m)
Traffic Lanes
3 lanes
One-way traffic
Clearance Below
24 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
51,207vehicles/day
42.36986°N, 71.06637°W
Prestressed Concrete (Continuous) Segmental Box Girder
A prestressed concrete box beam bridge combines hollow box sections with prestressing technology, enabling longer spans with reduced weight and material usage.
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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.