What's a bridge's favorite exercise? Cross-fit.
What's a bridge's favorite exercise? Cross-fit.
Why did the truss bridge break up with the beam bridge? It needed more support.
over US 1 RAMP LC
NORTH OF CHARLES RIVER
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 15,468 vehicles per day and is 24 years old.
Its sufficiency rating of 63.6 places it below the national average of 63.6.
The NBI records a navigation clearance of 17 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 780 feet long — a moderate crossing, about 30 seconds.
A standard bridge design.
About 17 feet above ground — moderate height, similar to a 3-5 story building.
About 15,468 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 26 feet wide with 1-2 lanes — a narrower crossing.
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
780 ft
237.7 m
Deck Width
26 ft
7.9 m
Spans
6
sections between supports
Max Span
143 ft
longest unsupported section (43.7 m)
Traffic Lanes
1 lane
One-way traffic
Clearance Below
17 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
15,468vehicles/day
42.37116°N, 71.06691°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.