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Why did the truss bridge break up with the beam bridge? It needed more support.
over MONTROSE AVE
4400 N.& 646 W.
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 83,800 vehicles per day and is 86 years old (reconstructed in 1967).
Its sufficiency rating of 62.1 places it below the national average of 63.6.
For travelers with bridge anxiety
This bridge is likely to be a comfortable crossing for most travelers.
This bridge is 65 feet long — a quick crossing, under 5 seconds at highway speed.
A standard overpass design with solid barriers on each side.
No height data available — likely a standard overpass height.
About 83,800 vehicles cross daily — heavy traffic, congestion likely during rush hours.
The deck is 130 feet wide with multiple lanes — easy to stay in a center lane.
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
1940
86 years old (rebuilt 1967)
Structure Type
Steel Stringer/Multi-beam/Girder
Total Length
65 ft
19.7 m
Deck Width
130 ft
39.7 m
Spans
1
sections between supports
Max Span
61 ft
longest unsupported section (18.7 m)
Traffic Lanes
8 lanes
Two-way traffic
Daily Traffic
83,800vehicles/day
41.96204°N, 87.64648°W
Steel 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.