41,685 bridges are in poor condition. But this loading screen isn't one of them.
41,685 bridges are in poor condition. But this loading screen isn't one of them.
Why did the truss bridge break up with the beam bridge? It needed more support.
over CAL SAG CHANNEL
0.2 M N IL 83
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 33,800 vehicles per day and is 59 years old (reconstructed in 2000).
Its sufficiency rating of 60.7 places it below the national average of 63.6.
The NBI records a navigation clearance of 25 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 445 feet long — a short crossing, about 10-15 seconds.
A truss bridge — the steel framework can provide a sense of enclosure.
About 25 feet above ground — moderate height, similar to a 3-5 story building.
About 33,800 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 34 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
1967
59 years old (rebuilt 2000)
Structure Type
Steel Truss (Thru)
Total Length
445 ft
135.6 m
Deck Width
34 ft
10.4 m
Spans
1
sections between supports
Max Span
290 ft
longest unsupported section (88.3 m)
Traffic Lanes
2 lanes
One-way traffic
Clearance Below
25 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
33,800vehicles/day
41.68529°N, 87.85551°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.