Almost there! Just bridging the gap...
Almost there! Just bridging the gap...
Crunching the numbers on America's infrastructure...
over CHAMPLAIN CANAL
JCT RTE 4 & CHAMPLAIN C
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 5 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 7,413 vehicles per day and is 93 years old (reconstructed in 2015).
Its sufficiency rating of 57.5 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 340 feet long — a short crossing, about 10-15 seconds.
A truss bridge — the steel framework can provide a sense of enclosure.
About 17 feet above ground — moderate height, similar to a 3-5 story building.
About 7,413 vehicles cross daily — light traffic, a smooth crossing.
The deck is 28 feet wide with 1-2 lanes — a narrower crossing.
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
1933
93 years old (rebuilt 2015)
Structure Type
Steel Truss (Thru)
Total Length
340 ft
103.6 m
Deck Width
28 ft
8.4 m
Spans
1
sections between supports
Max Span
170 ft
longest unsupported section (51.8 m)
Traffic Lanes
2 lanes
Two-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
7,413vehicles/day
43.54963°N, 73.40176°W
Steel Truss (Thru)
A steel truss bridge uses a framework of interconnected triangular elements. The geometric rigidity of triangles makes this design extremely efficient at distributing loads.
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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.